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HT2040A

Christmas Light Controller

Features

•

Operating voltage: 4.5V~5.5V

4 SCR direct drive outputs

10 different groups of lighting patterns

Up to 8 patterns for each group

Demonstration function

Up to 23 patterns can be programmed inside

Built-in PLL circuit

50Hz or 60Hz AC power supply applications

Default 12 patterns for standard applica-

tions

•

One key activation function

General Description

The HT2040A is a low cost, low power CMOS

LSI chip designed for use in Christmas lighting

control products. It provides 4 SCR outputs to

control the lamps. The lamps can display up to

10 different groups of lighting patterns, where

each pattern or pattern group is chosen by ap-

propriate input keys.

The available 10 groups of lighting patterns can

all be displayed automatically or sequentially

using a single key. (12 patterns and 10 pre-pro-

grammed groups are provided by default.)

The internal PLL circuit allows synchronized

control of the SCRs at either 50Hz or 60Hz AC

supply voltage.

Pin Assignment

Block Diagram

1

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HT2040A

Pad Coordinates

Unit: mil

P a d No.

X

Y

P a d No.

X

Y

1

2

3

4

5

6

7

8

–46.47 –0.17

–46.47 –7.01

–46.47 –14.66

–46.47 –32.22

–46.47 –42.59

–34.74 –42.59

38.82 –42.59

46.47 –42.59

9

46.47 –23.89

46.47 –16.24

46.47 –4.51

46.47 42.59

35.17 42.59

23.86 42.59

11.62 42.59

–0.32 42.59

10

11

12

13

14

15

16

Chip size: 107 × 99 (mil)²

* The IC substrate should be connected to VDD in the PCB layout artwork.

Pad Description

In ter n a l

P a d No. P a d Na m e I/O

Descr ip t ion

Con n ection

CMOS

—

Lamp driving signal

1

2

L4

O

I

L4 generates a high SCR trigger signal to control the

lamp intensity.

VDD

Power supply (positive)

Demo function or group-5 selection input

If MODE is connected to VSS or open, DK1 will enable

the demo mode, i.e., show all the configurations (group-

1 ~ group-10) by being momentarily connected to VDD.

If MODE is connected to VDD, group-5 will be shown by

connecting DK1 to VDD.

CMOS

Pull-Low

3

DK1

I

One key activated display or group-6 selection

If MODE is connected to VSS or floating, SK2 will

display the next group by being momentarily pressed.

If MODE is connected to VDD, group-6 will be shown by

connecting SK2 to VDD.

CMOS

Pull-Low

4

SK2

I

Group1 ~ Group4 selection

If MODE is connected to VSS or floating, group-7~

group-10 will be shown by connecting MODE to VDD.

CMOS

Pull-Low

5~8

K3~K6

PLL synchronous signal input

The PLL circuit is synchronized to the AC power

supply. The system can operate with a 60Hz or 50Hz

AC power supply system.

9

SYNC

C

I

CMOS

NMOS

10

For low pass PLL filters

2

26th Mar ’97

HT2040A

In ter n a l

Con n ection

P a d No. P a d Na m e I/O

Descr ip t ion

Power supply (ground)

11

12

VSS

I

—

CMOS

Pull-Low

MODE defines the operating functions of DK1, SK2,

and K3~K6 (refer to the functional description).

MODE

CMOS

Pull-High

13

TEST

I

For IC test only

Lamp driving signals

14~16

L1~L3

O

CMOS

L1~L3 generate high SCR trigger signals to control the

lamp intensity.

Approximate internal connection circuit

Absolute Maximum Ratings

Supply Voltage .............................. –0.3V to 5.5V

Input Voltage..................V_SS–0.3V to V_DD+0.3V

Storage Temperature................. –50°C to 125°C

Operating Temperature............... –20°C to 75°C

Electrical Characteristics

(Ta=25°C)

Test Con d ition

Sym bol

P a r a m eter

Min . Typ . Ma x. Un it

V_DD

—

Con d ition

—

V_DD

I_DD

I_OL

I_OH

V_IH

V_IL

Supply Voltage

4.5

—

5.0

300

4.0

5.5

600

—

V

µA

mA

µA

V

Operating Current

5V

—

No load

V_OL=0.5V

V_OH=4.5V

—

L1~L4 Output Sink Current

L1~L4 Output Source Current

“H” Input Voltage

2.0

–15

0.8V_DD

—

–22

—

“L” Input Voltage

—

0.2V_DD

—

V

AC 60Hz

AC 50Hz

—

122.9

102.4

F_OSC

Internal System Frequency

—

KHz

—

3

26th Mar ’97

HT2040A

Functional Description

The HT2040A provides 10 different lighting

configurations. Each lighting configuration is

called a group. A group is divided into sections

(up to 8 sections maximum) where each section

contains exactly one pattern. The patterns and

the corresponding sections can be programmed

into a group from a repository of up to 23 differ-

ent patterns. The default option for the chip is

12 patterns with 10 pre-programmed groups.

MODE

Selected P in

Op en or VSS

VDD

Show

Group-5

active high

—

DK1

momentarily Demo function

active high

—

Show

Group-6

—

SK2

The groups can be individually selected by us-

ing the DK1, SK2, and K3~K6 pins, where each

pin has 2 functions that are decided by the

status of the MODE pin. All groups will be

displayed by momentarily connecting SK2 to

VDD with the MODE pin being connected to

VSS. Given this, the HT2040A provides a very

versatile and easy way of controlling lamps.

momentarily One key show

—

Show

Group-7

K3 (active high) Show Group-1

K4 (active high) Show Group-2

K5 (active high) Show Group-3

K6 (active high) Show Group-4

Show

Group-8

Show

Group-9

If the MODE pin is not connected to VDD and

power is turned on, the system will enable the

DEMO mode. But if the MODE pin is connected

to VDD, the system will show the group assign-

ment of each pin as shown in the following

table.

Show

Group-10

Group List

The available 10 groups in which the lamps can

be displayed are illustrated in the following

diagram. Each group is comprised by sections

where each section contains only one pattern.

The approximate time of each section is based

upon the 60Hz AC power frequency.

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HT2040A

5

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HT2040A

*Note: Sp denotes the display speed of a pattern, and Re denotes the repeating number.

For example, Sp: 1x means normal speed.

Sp: 2x means double speed.

Re: 1x shows a pattern once.

Re: 2x shows a pattern twice.

Lamp Pattern

Lamp patterns determine the way that each

lamp is controlled. There are totally 12 patterns

by default. Patterns P1 to P6 decide various

degrees of lamp brightness from fully on to fully

off whereas patterns P7~P12 can only turn the

lamps either fully on or fully off.

6

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HT2040A

7

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HT2040A

8

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HT2040A

Application Circuit

Chip form

*Note: 1. The IC substrate should be connected to VDD in the PCB layout artwork.

2. R = 47KΩ/0.5W when the AC power supply is 110V

R = 91KΩ/1W when the AC power supply is 220V.

Package form

*Note: R = 47KΩ/0.5W when the AC power supply is 110V

R = 91KΩ/1W when the AC power supply is 220V.

9

26th Mar ’97

型号:	HT2040A
是否Rohs认证：	不符合
生命周期：	Obsolete
包装说明：	DIP, DIP16(UNSPEC)
Reach Compliance Code：	unknown
风险等级：	5.91
商用集成电路类型：	CONSUMER CIRCUIT
JESD-30 代码：	R-PDIP-T16
JESD-609代码：	e0
端子数量：	16
最高工作温度：	70 °C
最低工作温度：	-20 °C
封装主体材料：	PLASTIC/EPOXY
封装代码：	DIP
封装等效代码：	DIP16(UNSPEC)
封装形状：	RECTANGULAR
封装形式：	IN-LINE
电源：	5 V
认证状态：	Not Qualified
子类别：	Other Consumer ICs
表面贴装：	NO
技术：	CMOS
温度等级：	COMMERCIAL
端子面层：	Tin/Lead (Sn/Pb)
端子形式：	THROUGH-HOLE
端子位置：	DUAL
Base Number Matches：	1

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