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PCA9552

16-bit I²C LED driver with programmable

blink rates

Product data sheet

2004 Oct 01

Supersedes data of 2003 May 02

Philips

Semiconductors

Philips Semiconductors

Product data sheet

16-bit I²C LED driver with

programmable blink rates

PCA9552

DESCRIPTION

2

The PCA9552 LED Blinker blinks LEDs in I C-bus and SMBus

applications where it is necessary to limit bus traffic or free up the

2

I C Master’s (MCU, MPU, DSP, chipset, etc.) timer. The uniqueness

of this device is the internal oscillator with two programmable blink

rates. To blink LEDs using normal I/O Expanders like the PCF8574

or PCA9554, the bus master must send repeated commands to turn

the LED on and off. This greatly increases the amount of traffic on

2

the I C-bus and uses up one of the master’s timers. The PCA9552

LED Blinker instead requires only the initial set up command to

program BLINK RATE 1 and BLINK RATE 2 (i.e., the frequency and

duty cycle) for each individual output. From then on, only one

command from the bus master is required to turn each individual

open drain output ON, OFF, or to cycle at BLINK RATE 1 or BLINK

RATE 2. Maximum output sink current is 25 mA per bit and 200 mA

per package.

FEATURES

• 16 LED drivers (on, off, flashing at a programmable rate)

• 2 selectable, fully programmable blink rates (frequency and duty

cycle) between 0.172 Hz and 44 Hz (5.82 and 0.023 seconds)

• Input/outputs not used as LED drivers can be used as regular

GPIOs

Any bits not used for controlling the LEDs can be used for General

Purpose Parallel Input/Output (GPIO) expansion.

• Internal oscillator requires no external components

The active-LOW hardware reset pin (RESET) and Power-On Reset

(POR) initializes the registers to their default state, all zeroes,

causing the bits to be set HIGH (LED off).

2

• I C-bus interface logic compatible with SMBus

• Internal power-on reset

• Noise filter on SCL/SDA inputs

• Active-LOW reset input

Three hardware address pins on the PCA9552 allow eight devices

to operate on the same bus.

• 16 open drain outputs directly drive LEDs to 25 mA

• Edge rate control on outputs

• No glitch on power-up

• Supports hot insertion

• Low stand-by current

• Operating power supply voltage range of 2.3 V to 5.5 V

• 0 to 400 kHz clock frequency

• ESD protection exceeds 2000 V HBM per JESD22-A114,

150 V MM per JESD22-A115 and 1000 V CDM per JESD22-C101

• Latch-up testing is done to JESDEC Standard JESD78 which

exceeds 100 mA

• Packages offered: SO24, TSSOP24, HVQFN24

ORDERING INFORMATION

PACKAGES

TEMPERATURE RANGE

ORDER CODE

TOPSIDE MARK

DRAWING NUMBER

24-pin plastic SO

24-pin plastic TSSOP

24-pin plastic HVQFN

–40 °C to +85 °C

PCA9552D

PCA9552PW

PCA9552BS

PCA9552D

PCA9552PW

9552

SOT137-1

SOT355-1

SOT616-1

Standard packing quantities and other packaging data are available at www.standardproducts.philips.com/packaging.

2

I C is a trademark of Philips Semiconductors Corporation.

2

2004 Oct 01

Philips Semiconductors

Product data sheet

16-bit I²C LED driver with programmable blink rates

PCA9552

PIN CONFIGURATION — SO, TSSOP

PIN CONFIGURATION — HVQFN

V

1

2

24

23

22

21

20

19

18

17

16

15

14

13

DD

A0

A1

SDA

LED0

18 RESET

1

2

3

4

5

6

3

A2

SCL

LED15

LED14

LED13

LED12

17

16

15

14

13

LED1

LED2

LED3

LED4

4

LED0

LED1

LED2

LED3

LED4

LED5

LED6

LED7

RESET

LED15

LED14

LED13

LED12

5

6

7

8

LED5

LED11

9

LED11

LED10

10

11

12

LED9

LED8

V

SS

TOP VIEW

Figure 2. Pin configuration — HVQFN

SW00931

su01668

Figure 1. Pin configuration — SO, TSSOP

PIN DESCRIPTION

SO, TSSOP

NUMBER

HVQFN

NUMBER

SYMBOL

FUNCTION

1

2

3

22

23

24

A0

A1

A2

Address input 0

Address input 1

Address input 2

4, 5, 6, 7, 8, 9,

10, 11

1, 2, 3, 4, 5, 6,

7, 8

LED0–7

LED driver 0–7

Supply ground

LED driver 8–15

12

9

V

SS

13, 14, 15, 16,

17, 18, 19, 20

10, 11, 12, 13,

14, 15, 16, 17

LED8–15

21

22

23

24

18

19

20

21

RESET

SCL

Active-LOW reset input

Serial clock line

Serial data line

SDA

V

DD

Supply voltage

3

2004 Oct 01

Philips Semiconductors

Product data sheet

16-bit I²C LED driver with programmable blink rates

PCA9552

BLOCK DIAGRAM

A2 A1 A0

PCA9552

INPUT

REGISTER

SCL

2

INPUT

FILTERS

I C-BUS

LED SELECT (LSx)

REGISTER

CONTROL

SDA

0

1

LEDx

POWER-ON

RESET

V

DD

BLINK0

BLINK1

PWM0

REGISTER

PRESCALER 0

REGISTER

RESET

PWM1

REGISTER

PRESCALER 1

REGISTER

OSCILLATOR

V

SS

NOTE: ONLY ONE I/O SHOWN FOR CLARITY

SW00787

Figure 3. Block diagram

4

2004 Oct 01

Philips Semiconductors

Product data sheet

16-bit I²C LED driver with programmable blink rates

PCA9552

DEVICE ADDRESSING

Control Register definition

Following a START condition the bus master must output the

address of the slave it is accessing. The address of the PCA9552 is

shown in Figure 4. To conserve power, no internal pull-up resistors

are incorporated on the hardware selectable address pins and they

must be pulled HIGH or LOW.

REGISTER

NAME

REGISTER

FUNCTION

B3

B2

B1

B0

TYPE

INPUT

REGISTER 0

0

INPUT0

INPUT1

PSC0

PWM0

PSC1

PWM1

LS0

READ

INPUT

REGISTER 1

0

1

READ

READ/

SLAVE ADDRESS

FREQUENCY

WRITE PRESCALER 0

0

1

0

1

0

A2 A1 A0 R/W

READ/

WRITE

PWM

REGISTER 0

0

1

FIXED

HARDWARE SELECTABLE

su01420

READ/

FREQUENCY

WRITE PRESCALER 1

0

1

0

Figure 4. Slave address

The last bit of the address byte defines the operation to be

performed. When set to logic 1 a read is selected, while a logic 0

selects a write operation.

READ/

WRITE

PWM

REGISTER 1

0

1

0

1

READ/

WRITE

LED 0–3

SELECTOR

0

1

0

READ/

WRITE

LED 4–7

SELECTOR

0

1

LS1

CONTROL REGISTER

Following the successful acknowledgement of the slave address,

the bus master will send a byte to the PCA9552 which will be stored

in the Control Register. This register can be read and written via the

READ/

WRITE

LED 8–11

SELECTOR

1

0

LS2

2

READ/

WRITE

LED 12–15

SELECTOR

I C-bus.

1

0

1

LS3

0

AI

B3 B2 B1 B0

REGISTER DESCRIPTION

INPUT0 — INPUT REGISTER 0

REGISTER ADDRESS

AUTO-INCREMENT FLAG

RESET STATE: 00h

LED LED LED LED LED LED LED LED

SW00898

7

6

5

4

3

2

1

0

Figure 5. Control register

bit

7

6

5

4

3

2

1

0

default

X

The lowest 3 bits are used as a pointer to determine which register

will be accessed.

The INPUT register 0 reflects the state of the device pins (inputs 0

to 7). Writes to this register will be acknowledged but will have no

effect.

If the auto-increment flag (AI) is set, the four low order bits of the

Control Register are automatically incremented after a read or write.

This allows the user to program the registers sequentially. The

contents of these bits will rollover to ‘0000’ after the last register is

accessed.

NOTE: The default value “X” is determined by the externally applied

logic level, normally ‘1’ when used for directly driving LED with

pull-up to V

.

DD

INPUT1 — INPUT REGISTER 1

When auto-increment flag is set (AI = 1) and a read sequence is

initiated, the sequence must start by reading a register different from

‘0’ (B3 B2 B1 B0 0 0 0 0 0).

LED LED LED LED LED LED LED LED

15

7

14

6

13

5

12

4

11

3

10

2

9

1

8

0

bit

Only the 4 least significant bits are affected by the AI flag.

Unused bits must be programmed with zeroes.

default

X

The INPUT register 1 reflects the state of the device pins (inputs 8

to 15). Writes to this register will be acknowledged but will have no

effect.

NOTE: The default value “X” is determined by the externally applied

logic level, normally ‘1’ when used for directly driving LED with

pull-up to V

.

DD

PSC0 — FREQUENCY PRESCALER 0

bit

7

1

6

1

5

1

4

1

3

1

2

1

0

1

default

PSC0 is used to program the period of the PWM output.

(PSC0 ) 1)

The period of BLINK0 +

44

5

2004 Oct 01

Philips Semiconductors

Product data sheet

16-bit I²C LED driver with programmable blink rates

PCA9552

PWM0 — PWM REGISTER 0

PINS USED AS GENERAL PURPOSE I/Os

LED pins not used to control LEDs can be used as general purpose

I/Os.

bit

7

1

6

0

5

0

4

0

3

0

2

0

1

0

default

For use as input: Set LEDx to high-impedance (01) and then read

the pin state via the input register.

The PWM0 register determines the duty cycle of BLINK0. The

outputs are LOW (LED off) when the count is less than the value in

PWM0 and HIGH when it is greater. If PWM0 is programmed with

00h, then the PWM0 output is always LOW.

For use as output: Connect external pull-up resistor to the pin and

size it according to the DC recommended operating characteristics.

LED output pin is HIGH when the output is programmed as

high-impedance, and LOW when the output is programmed LOW

through the “LED selector” register. The output can be pulse-width

controlled when PWM0 or PWM1 are used.

256 – PWM0

The duty cycle of BLINK0 is:

256

PSC1 — FREQUENCY PRESCALER 1

bit

7

1

6

1

5

1

4

1

3

1

2

1

0

1

default

PSC1 is used to program the period of PWM output.

POWER-ON RESET

When power is applied to V , an internal Power-On Reset holds

(PSC1 ) 1)

DD

The period of BLINK1 +

the PCA9552 in a reset condition until V has reached V . At

POR

44

DD

this point, the reset condition is released and the PCA9552 registers

are initialized to their default states, all the outputs in the off state.

PWM1 — PWM REGISTER 1

bit

7

1

6

0

5

0

4

0

3

0

2

0

1

0

Thereafter, V must be lowered below 0.2 V to reset the device.

DD

default

The PWM1 register determines the duty cycle of BLINK1. The

outputs are LOW (LED off) when the count is less than the value in

PWM1 and HIGH when it is greater. If PWM1 is programmed with

00h, then the PWM1 output is always LOW.

EXTERNAL RESET

A reset can be accomplished by holding the RESET pin LOW for a

2

minimum of t . The PCA9552 registers and I C state machine will

W

be held in their default state until the RESET input is once again

HIGH.

256 – PWM1

The duty cycle of BLINK1 is:

256

LS0 — LED 0–3 SELECTOR

This input requires a pull-up resistor to V if no active connection is

DD

used.

LED 3

LED 2

LED 1

LED 0

bit

7

6

1

5

4

1

3

2

1

0

1

default

0

LS1 — LED 4–7 SELECTOR

LED 7 LED 6

LED 5

LED 4

bit

7

6

1

5

0

4

1

3

0

2

1

0

1

default

0

LS2 — LED 8–11 SELECTOR

LED 11 LED 10

LED 9

LED 8

bit

7

6

1

5

0

4

1

3

0

2

1

0

1

default

0

LS3 — LED 12–15 SELECTOR

LED 15 LED 14

LED 13

LED 12

bit

7

6

1

5

0

4

1

3

0

2

1

0

1

default

0

The LSx LED select registers determine the source of the LED data.

00 = Output is set LOW (LED on)

01 = Output is set Hi-Z (LED off – default)

10 = Output blinks at PWM0 rate

11 = Output blinks at PWM1 rate

6

2004 Oct 01

Philips Semiconductors

Product data sheet

16-bit I²C LED driver with programmable blink rates

PCA9552

2

CHARACTERISTICS OF THE I C-BUS

Start and stop conditions

2

The I C-bus is for 2-way, 2-line communication between different ICs

Both data and clock lines remain HIGH when the bus is not busy. A

HIGH-to-LOW transition of the data line, while the clock is HIGH is

defined as the start condition (S). A LOW-to-HIGH transition of the

data line while the clock is HIGH is defined as the stop condition (P)

(see Figure 7).

or modules. The two lines are a serial data line (SDA) and a serial

clock line (SCL). Both lines must be connected to a positive supply

via a pull-up resistor when connected to the output stages of a device.

Data transfer may be initiated only when the bus is not busy.

System configuration

Bit transfer

A device generating a message is a transmitter: a device receiving

is the receiver. The device that controls the message is the master

and the devices which are controlled by the master are the slaves

(see Figure 8).

One data bit is transferred during each clock pulse. The data on the

SDA line must remain stable during the HIGH period of the clock

pulse as changes in the data line at this time will be interpreted as

control signals (see Figure 6).

SDA

SCL

data line

stable;

data valid

change

of data

allowed

SW00363

Figure 6. Bit transfer

SDA

SCL

S

P

START condition

STOP condition

SW00365

Figure 7. Definition of start and stop conditions

SDA

SCL

MASTER

TRANSMITTER/

RECEIVER

SLAVE

TRANSMITTER/

RECEIVER

MASTER

TRANSMITTER/

RECEIVER

2

SLAVE

RECEIVER

I C

MASTER

TRANSMITTER

MULTIPLEXER

SLAVE

SW00366

Figure 8. System configuration

7

2004 Oct 01

Philips Semiconductors

Product data sheet

16-bit I²C LED driver with programmable blink rates

PCA9552

Acknowledge

The number of data bytes transferred between the start and the stop conditions from transmitter to receiver is not limited. Each byte of eight bits

is followed by one acknowledge bit. The acknowledge bit is a HIGH level put on the bus by the transmitter whereas the master generates an

extra acknowledge related clock pulse.

A slave receiver which is addressed must generate an acknowledge after the reception of each byte. Also a master must generate an

acknowledge after the reception of each byte that has been clocked out of the slave transmitter. The device that acknowledges has to pull down

the SDA line during the acknowledge clock pulse, so that the SDA line is stable LOW during the HIGH period of the acknowledge related clock

pulse, set-up and hold times must be taken into account.

A master receiver must signal an end of data to the transmitter by not generating an acknowledge on the last byte that has been clocked out of

the slave. In this event, the transmitter must leave the data line HIGH to enable the master to generate a stop condition.

DATA OUTPUT

BY TRANSMITTER

not acknowledge

DATA OUTPUT

BY RECEIVER

acknowledge

SCL FROM

MASTER

1

2

8

9

S

clock pulse for

acknowledgement

START condition

SW00368

2

Figure 9. Acknowledgement on the I C-bus

8

2004 Oct 01

Philips Semiconductors

Product data sheet

16-bit I²C LED driver with programmable blink rates

PCA9552

Bus transactions

1

2

3

4

5

6

7

8

0

9

SCL

slave address

command byte

data to register

DATA 1

SDA

1

0

A2 A1 A0

S

A

0

AI B3 B2 B1 B0

A

start condition

R/W acknowledge

from slave

acknowledge

from slave

acknowledge

from slave

WRITE TO

REGISTER

DATA OUT

FROM PORT

DATA 1 VALID

SW02000

t

pv

Figure 10. WRITE to register

acknowledge

from slave

acknowledge

from slave

acknowledge

from slave

acknowledge

from master

slave address

data from register

0

A2 A1

0

A2 A1

A0

1

0

A0

1

0

1

DATA

S

0

A

0

AI B3 B2 B1 B0

A

S

A

first byte

R/W

auto-increment

register address

if AI = 1

at this moment master-transmitter

becomes master-receiver and

slave-receiver becomes

slave-transmitter

no acknowledge

from master

data from register

NA

P

DATA

last byte

SW01099

Figure 11. READ from register

slave address

data from port

SDA

DATA 1

A

DATA 4

1

0

A2 A1 A0

S

1

A

NA

P

start condition

R/W acknowledge

from slave

acknowledge

from master

no acknowledge

from master

stop

condition

READ FROM

PORT

DATA INTO

PORT

DATA 1

DATA 2

DATA 3

DATA 4

t

ph

t

ps

SW01096

NOTE:

1. This figure assumes the command byte has previously been programmed with 00h.

Figure 12. READ input port register

9

2004 Oct 01

Philips Semiconductors

Product data sheet

16-bit I²C LED driver with programmable blink rates

PCA9552

APPLICATION DATA

5 V

10 kΩ (3×)

V

LED0

LED1

DD

SDA

SCL

SDA

LED2

LED3

LED4

SCL

RESET

LED5

LED6

LED7

LED8

LED9

2

I C/SMBus MASTER

A2

A1

LED10

LED11

LED12

A0

V

SS

LED13

LED14

LED15

GPIOs

Note: LED0 to LED12 are used as LED drivers

LED13 to LED15 are used as regular GPIOs.

PCA9552

SW00930

Figure 13. Typical application

Minimizing I when the I/O is used to control LEDs

DD

When the I/Os are used to control LEDs, they are normally connected to V through a resistor as shown in Figure 13. Since the LED acts as a

DD

diode, when the LED is off the I/O V is about 1.2 V less than V . The supply current, I , increases as V becomes lower than V and is

IN

DD

IN

DD

specified as ∆I in the DC characteristics table.

DD

Designs needing to minimize current consumption, such as battery power applications, should consider maintaining the I/O pins greater than or

equal to V when the LED is off. Figure 14 shows a high value resistor in parallel with the LED. Figure 15 shows V less than the LED supply

DD

voltage by at least 1.2 V. Both of these methods maintain the I/O V at or above V and prevents additional supply current consumption when

IN

DD

the LED is off.

3.3 V

5 V

V

DD

LED

100 kΩ

V

LED

DD

V

DD

LEDx

SW02086

SW02087

Figure 14. High value resistor in parallel with the LED

Figure 15. Device supplied by a lower voltage

10

2004 Oct 01

Philips Semiconductors

Product data sheet

16-bit I²C LED driver with programmable blink rates

PCA9552

Programming example

The following example will show how to set LED0 to LED3 on. It will

then set LED4 and LED5 to blink at 1 Hz at a 50% duty cycle. LED6

and LED7 will be set to blink at 4 Hz and at a 25% duty cycle. LED8

to LED15 will be set to off.

Table 1.

2

I C-bus

Start

S

PCA9552 address with A0–A2 = low

PSC0 subaddress + auto-increment

Set prescaler PSC0 to achieve a period of 1 second:

C0h

12h

2Bh

PSC0 ) 1

Blink period + 1 +

44

PSC0 = 43

Set PWM0 duty cycle to 50%:

80h

0Ah

C0h

256 – PWM0

+ 0.5

256

PWM0 = 128

Set prescaler PCS1 to achieve a period of 0.25

seconds:

PSC1 ) 1

Blink period + 0.25 +

44

PSC1 = 10

Set PWM1 output duty cycle to 25%:

256 – PWM1

+ 0.25

256

PWM1 = 192

Set LED0 to LED3 on

00h

FAh

55h

P

Set LED4 and 5 to PWM0, and LED6 or 7 to PWM1

Set LED8 to LED11 off

Set LED12 to LED15 off

Stop

11

2004 Oct 01

Philips Semiconductors

Product data sheet

16-bit I²C LED driver with programmable blink rates

PCA9552

ABSOLUTE MAXIMUM RATINGS

In accordance with the Absolute Maximum Rating System (IEC 134)

SYMBOL

PARAMETER

CONDITIONS

MIN

MAX

UNIT

V

DD

Supply voltage

–0.5

6.0

5.5

V

DC voltage on an I/O

V

– 0.5

V

I/O

SS

I

DC output current on an I/O

Supply current

—

±25

200

400

+150

+85

mA

mW

°C

P

tot

Total power dissipation

Storage temperature range

Operating ambient temperature

—

T

stg

–65

–40

T

amb

°C

HANDLING

Inputs and outputs are protected against electrostatic discharge in normal handling. However, to be totally safe, it is desirable to take

precautions appropriate to handling MOS devices. Advice can be found in Data Handbook IC24 under ”Handling MOS devices”.

DC CHARACTERISTICS

V

= 2.3 V to 5.5 V; V = 0 V; T

= –40 °C to +85 °C; unless otherwise specified. TYP at 3.3 V and 25 °C.

DD

SS

amb

SYMBOL

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNIT

Supplies

V

Supply voltage

Supply current

2.3

—

5.5

V

DD

Operating mode; V = 5.5 V; no load;

DD

I

350

550

µA

DD

V = V or V ; f = 100 kHz

I

DD

SS SCL

Standby mode; V = 5.5 V; no load;

DD

I

stb

Standby current

—

2.1

5.0

µA

V = V or V ; f = 0 kHz

I

DD

SS SCL

Standby mode; V = 5.5 V; Every

DD

∆I

Additional standby current

—

2

mA

V

DD

LED I/O at V = 4.3 V; f

= 0 kHz

IN

SCL

V

POR

Power-on reset voltage (Note 1)

V

DD

= 3.3 V; no load; V = V or V

SS

1.7

2.2

I

DD

Input SCL; input/output SDA

V

LOW-level input voltage

HIGH-level input voltage

LOW-level output current

Leakage current

–0.5

—

0.3 V

V

IL

IH

DD

V

0.7 V

3

5.5

—

+1

5

DD

I

OL

V

= 0.4 V

6.5

—

mA

µA

pF

OL

I

L

V = V = V

I

–1

DD

SS

C

Input capacitance

V = V

I

—

4.4

I

I/Os

V

LOW-level input voltage

HIGH-level input voltage

–0.5

2.0

9

—

2.6

0.8

5.5

—

1

V

IL

V

IH

V

OL

V

OL

V

OL

V

OL

V

OL

V

OL

V

DD

= 0.4 V; V = 2.3 V; Note 2

mA

µA

pF

DD

= 0.4 V; V = 3.0 V; Note 2

12

15

20

25

–1

—

DD

= 0.4 V; V = 5.0 V; Note 2

DD

I

OL

LOW-level output current

= 0.7 V; V = 2.3 V; Note 2

DD

= 0.7 V; V = 3.0 V; Note 2

DD

= 0.7 V; V = 5.0 V; Note 2

DD

I

L

Input leakage current

= 3.6 V; V = 0 V or V

I DD

C

Input/output capacitance

5

IO

Select Inputs A0, A1, A2 / RESET

V

LOW-level input voltage

HIGH-level input voltage

Input leakage current

Input capacitance

–0.5

2.0

–1

—

0.8

5.5

1

V

IL

IH

LI

V

I

—

µA

pF

C

V = V

I SS

—

2.3

5

I

NOTES:

1. V must be lowered to 0.2 V in order to reset part.

DD

2. Each I/O must be externally limited to a maximum of 25 mA and each octal (LED0–LED7 and LED8–LED15) must be limited to a maximum

current of 100 mA for a device total of 200 mA.

12

2004 Oct 01

Philips Semiconductors

Product data sheet

16-bit I²C LED driver with programmable blink rates

PCA9552

AC SPECIFICATIONS

STANDARD MODE

FAST MODE

I C-BUS

2

I C-BUS

SYMBOL

PARAMETER

UNITS

MIN

0

MAX

100

—

MIN

MAX

f

Operating frequency

0

400

—

kHz

µs

ns

µs

ns

SCL

t

Bus free time between STOP and START conditions

Hold time after (repeated) START condition

Repeated START condition set-up time

Set-up time for STOP condition

4.7

4.0

4.7

4.0

0

1.3

BUF

t

—

0.6

—

HD;STA

t

—

0.6

—

SU;STA

SU;STO

t

—

0.6

—

t

Data in hold time

—

0

—

HD;DAT

VD;ACK

2

t

Valid time for ACK condition

—

600

1500

—

600

—

3

t

(L)

Data out valid time

—

VD;DAT

3

t

(H)

Data out valid time

—

VD;DAT

t

Data set-up time

250

4.7

4.0

—

100

SU;DAT

t

Clock LOW period

Clock HIGH period

Clock/Data fall time

Clock/Data rise time

—

1.3

—

LOW

t

—

0.6

—

HIGH

1

t

F

300

1000

50

20 + 0.1 C

—

300

50

b

t

R

—

b

t

Pulse width of spikes that must be suppressed by the

input filters

—

SP

Port Timing

t

Output data valid

—

100

1

200

—

100

1

200

—

ns

µs

PV

PS

PH

Input data setup time

Input data hold time

t

—

Reset

t

Reset pulse width

Reset recovery time

Time to reset

10

0

—

10

0

—

ns

W

t

REC

4,5

RESET

t

400

NOTES:

1. C = total capacitance of one bus line in pF.

b

2. t

= time for Acknowledgement signal from SCL LOW to SDA (out) LOW.

VD;ACK

3. t

= minimum time for SDA data out to be valid following SCL LOW.

VD;DAT

4. Resetting the device while actively communicating on the bus may cause glitches or errant STOP conditions.

5. Upon reset, the full delay will be the sum of t and the RC time constant of the SDA bus.

RESET

13

2004 Oct 01

Philips Semiconductors

Product data sheet

16-bit I²C LED driver with programmable blink rates

PCA9552

+20%

+10%

MAX

0%

PERCENT

VARIATION

AVG

–10%

–20%

–30%

–40%

MIN

–40

0

+25

+70

+85

TEMPERATURE

(°C)

SW02311

Figure 16. Typical frequency variation over process at V = 2.3 V to 3.0 V

DD

+20%

+10%

MAX

0%

PERCENT

VARIATION

AVG

MIN

–10%

–20%

–30%

–40%

–40

0

+25

+70

+85

TEMPERATURE

(°C)

SW02312

Figure 17. Typical frequency variation over process at V = 3.0 V to 5.5 V

DD

14

2004 Oct 01

Philips Semiconductors

Product data sheet

16-bit I²C LED driver with programmable blink rates

PCA9552

START

ACK OR READ CYCLE

SCL

SDA

30%

t

RESET

50%

t

REC

t

W

t

RESET

50%

LEDx

LED OFF

SW02310

Figure 18. Definition of RESET timing

SDA

SCL

t

R

t

F

t

SP

HD;STA

t

LOW

BUF

t

SU;STO

HD;STA

SU;STA

t

SU;DAT

HD;DAT

HIGH

P

S

Sr

P

SU00645

Figure 19. Definition of timing

BIT 7

MSB

(A7)

START

CONDITION

(S)

STOP

CONDITION

(P)

BIT 6

(A6)

BIT 7

(D1)

BIT 8

(D0)

ACKNOWLEDGE

(A)

PROTOCOL

t

HIGH

SU;STA

LOW

1 / f

SCL

SDA

t

f

BUF

r

t

HD;DAT

HD;STA

SU;DAT

VD;DAT

VD;ACK

t

SU;STO

SW02333

2

Figure 20. I C-bus timing diagram; rise and fall times refer to V and V

IL

IH

15

2004 Oct 01

Philips Semiconductors

Product data sheet

16-bit I²C LED driver with programmable blink rates

PCA9552

V

DD

V

DD

Open

R

= 500 Ω

L

V

O

I

PULSE

GENERATOR

D.U.T.

R

T

C

L

50 pF

DEFINITIONS

R = Load resistor FOR LEDN. R FOR SDA AND SCL > 1 kΩ

L

(3 mA or less current).

C = Load capacitance includes jig and probe capacitance

L

R = Termination resistance should be equal to the output

T

impedance Z of the pulse generators.

O

SW02334

Figure 21. Test circuitry for switching times

16

2004 Oct 01

Philips Semiconductors

Product data sheet

16-bit I²C LED driver with programmable blink rates

PCA9552

SO24: plastic small outline package; 24 leads; body width 7.5 mm

SOT137-1

17

2004 Oct 01

Philips Semiconductors

Product data sheet

16-bit I²C LED driver with programmable blink rates

PCA9552

TSSOP24: plastic thin shrink small outline package; 24 leads; body width 4.4 mm

SOT355-1

18

2004 Oct 01

Philips Semiconductors

Product data sheet

16-bit I²C LED driver with programmable blink rates

PCA9552

HVQFN24: plastic thermal enhanced very thin quad flat package; no leads; 24 terminals;

body 4 x 4 x 0.85 mm

SOT616-1

19

2004 Oct 01

Philips Semiconductors

Product data sheet

16-bit I²C LED driver with programmable blink rates

PCA9552

REVISION HISTORY

Rev

Date

Description

_4

20041001

Product data sheet (9397 750 13727). Supersedes data of 2003 May 02 (9397 750 11463).

Modifications:

• “Features” section on page 2:

– second bullet: change from “... between 0.15625 and 40 Hz (6.4 and 0.025 seconds)” to “... between

0.172 Hz and 44 Hz (5.82 and 0.023 seconds)”

• Section “Register Description” on page 5:

– “INPUT0 — INPUT REGISTER 1” changed to “INPUT0 — INPUT REGISTER 0”. (Also changed first

sentence following table from “The INPUT register 1 reflects ... ” to “The INPUT register 0 reflects ...”.

– “INPUT0 — INPUT REGISTER 0” table modified; note added

– “INPUT1 — INPUT REGISTER 2” changed to “INPUT1 — INPUT REGISTER 1”.

– “INPUT1 — INPUT REGISTER 1” table modified; note added

– section “PCS0—Frequency Prescaler 0”: change denominator in equation from 38 to 44.

– section “PCS1—Frequency Prescaler 1”: change denominator in equation from 38 to 44.

• Add section “Pins used as General Purpose I/Os” on page 6.

• Section “Power-on Reset” on page 6 re-written.

• Section “External Reset” on page 6: second paragraph changed from “This input requires a pull-up resistor to

V

DD

.” to “This input requires a pull-up resistor to V if no active connection is used.”.

DD

• Figure 13 on page 10: add resistor values

• Table 1 on page 11:

– step “Set prescaler PSC0 ...”: change equation denominator from 38 to 44; change ‘PSC0 = 37’ to

2

‘PSC0 = 43’; change I C-bus address from ‘25h’ to ‘2Bh’

– step “Set prescaler PCS1 ...”: change equation denominator from 38 to 44; change ‘PSC1 = 9’ to

2

‘PCS1 = 10’; change I C-bus address from ‘09h’ to ‘0Ah’

• DC Characteristics table on page 12: add (new) Note 1 and its reference at V

• Add Figures 20 and 21.

.

POR

_3

_2

_1

20030502

20030224

20020927

Product data (9397 750 11463); ECN 853-2374 29857 of 24 April 2003;

supersedes data of 24 February 2003 (9397 750 11156).

Product data (9397 750 11156); ECN 853-2374 29331 of 20 December 2002;

supersedes data of 2002 Sep 09 (9397 750 10329).

Product data (9397 750 10329); ECN 853-2374 28878 of 09 September 2002.

20

2004 Oct 01

Philips Semiconductors

Product data sheet

16-bit I²C LED driver with programmable blink rates

PCA9552

2

Purchase of Philips I C components conveys a license under the Philips’ I C patent

2

to use the components in the I C system provided the system conforms to the

I C specifications defined by Philips. This specification can be ordered using the

2

code 9398 393 40011.

Data sheet status

Product

status

Definitions

[1]

Level

Data sheet status

[2] [3]

I

Objective data sheet

Development

This data sheet contains data from the objective specification for product development.

Philips Semiconductors reserves the right to change the specification in any manner without notice.

II

Preliminary data sheet

Product data sheet

Qualification

Production

This data sheet contains data from the preliminary specification. Supplementary data will be published

at a later date. Philips Semiconductors reserves the right to change the specification without notice, in

order to improve the design and supply the best possible product.

III

This data sheet contains data from the product specification. Philips Semiconductors reserves the

right to make changes at any time in order to improve the design, manufacturing and supply. Relevant

changes will be communicated via a Customer Product/Process Change Notification (CPCN).

[1] Please consult the most recently issued data sheet before initiating or completing a design.

[2] The product status of the device(s) described in this data sheet may have changed since this data sheet was published. The latest information is available on the Internet at URL

http://www.semiconductors.philips.com.

[3] For data sheets describing multiple type numbers, the highest-level product status determines the data sheet status.

Definitions

Short-form specification — The data in a short-form specification is extracted from a full data sheet with the same type number and title. For detailed information see

the relevant data sheet or data handbook.

Limitingvaluesdefinition— Limiting values given are in accordance with the Absolute Maximum Rating System (IEC 60134). Stress above one or more of the limiting

values may cause permanent damage to the device. These are stress ratings only and operation of the device at these or at any other conditions above those given

in the Characteristics sections of the specification is not implied. Exposure to limiting values for extended periods may affect device reliability.

Application information — Applications that are described herein for any of these products are for illustrative purposes only. Philips Semiconductors make no

representation or warranty that such applications will be suitable for the specified use without further testing or modification.

Disclaimers

Life support — These products are not designed for use in life support appliances, devices, or systems where malfunction of these products can reasonably be

expected to result in personal injury. Philips Semiconductors customers using or selling these products for use in such applications do so at their own risk and agree

to fully indemnify Philips Semiconductors for any damages resulting from such application.

Right to make changes — Philips Semiconductors reserves the right to make changes in the products—including circuits, standard cells, and/or software—described

or contained herein in order to improve design and/or performance. When the product is in full production (status ‘Production’), relevant changes will be communicated

viaaCustomerProduct/ProcessChangeNotification(CPCN).PhilipsSemiconductorsassumesnoresponsibilityorliabilityfortheuseofanyoftheseproducts,conveys

nolicenseortitleunderanypatent, copyright, ormaskworkrighttotheseproducts, andmakesnorepresentationsorwarrantiesthattheseproductsarefreefrompatent,

copyright, or mask work right infringement, unless otherwise specified.

Koninklijke Philips Electronics N.V. 2004

Contact information

For additional information please visit

http://www.semiconductors.philips.com.

Fax: +31 40 27 24825

Date of release: 10-04

9397 750 13727

For sales offices addresses send e-mail to:

sales.addresses@www.semiconductors.philips.com.

Document order number:

Philips

Semiconductors

21

2004 Oct 01

型号:	PCA9552PW
是否Rohs认证：	不符合
生命周期：	Transferred
IHS 制造商：	PHILIPS SEMICONDUCTORS
包装说明：	TSSOP, TSSOP24,.25
Reach Compliance Code：	unknown
风险等级：	5.71
JESD-30 代码：	R-PDSO-G24
JESD-609代码：	e0
端子数量：	24
最高工作温度：	85 °C
最低工作温度：	-40 °C
封装主体材料：	PLASTIC/EPOXY
封装代码：	TSSOP
封装等效代码：	TSSOP24,.25
封装形状：	RECTANGULAR
封装形式：	SMALL OUTLINE, THIN PROFILE, SHRINK PITCH
电源：	2.5/5 V
认证状态：	Not Qualified
子类别：	Display Drivers
表面贴装：	YES
温度等级：	INDUSTRIAL
端子面层：	Tin/Lead (Sn/Pb)
端子形式：	GULL WING
端子节距：	0.635 mm
端子位置：	DUAL
Base Number Matches：	1

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