R8A66155SP
16-bit I/O EXPANDER WITH LED DRIVE FUNCTION
REJ03F0286-0100
Rev. 1.00
Dec.08.2009
DESCRIPTION
R8A66155 is a semiconductor integrated circuit which has 16-bit shift register function to execute serial in -
parallel out conversion and parallel in - serial out conversion.
Built in two shift registers for serial in - parallel out and parallel in - serial out are constructed independently,
This IC is able to read serial input data into a shift register while output the serial data converting from the
parallel data input.
Also, parallel data I/O pins can be set to input mode or output mode by a bit.
R8A66155 is useful in a wide range of applications, such as MCU (micro controller unit) I/O port extension
and serial bus system data communication.
Moreover, R8A66155 can be used as the anode common LED drive, too.
FEATURES
Bi-directional serial communication with MCU
Serial data can be input during parallel to serial data conversion
Parallel data I/O pins can be set input mode or output mode by a bit
Schmitt input (DI, CLK, /S, /CS)
N-ch open drain output (DO, D1~D16).
High output current I
OL
=24mA (at V
CC
=4.5V), I
OL
=15mA (at V
CC
=3.0V)
Parallel data I/O pins (D1~D16)
Wide supply voltage range (Vcc=2.0 to 6.0V)
Wide operating temperature range (Ta=-40 to 85℃)
APPLICATION
Serial - parallel or parallel - serial data conversion for MCU peripheral.
Serial bus control by MCU.
LED array drive, The various LED display modules.
PIN CONFIGURATION (TOP VIEW)
SERIAL DATA OUTPUT
DO
SERIAL DATA INPUT
DI
CLOCK INPUT
CLK
CHIP SELECT INPUT
CS
Vcc
SET INPUT
S
GND
D16
PARALLEL DATA I/O
D15
D14
D13
GND
1
2
3
4
5
6
7
8
9
10
11
12
24
23
22
21
20
19
18
17
16
15
14
13
D1
D2
D3
D4
D5
D6
D7
D8
D9
D10
D11
D12
PARALLEL DATA I/O
REJ03F0286-0100 Rev.1.00 Dec.08.2009
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RENESAS [ RENESAS TECHNOLOGY CORP ]
