R8A66156SP

24-bit I/O EXPANDER WITH LED DRIVE FUNCTION

REJ03F0283-0100 Rev.1.00 Sep.14.2009

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REJ03F0283-0100

Rev. 1.00

Sep.14.2009

DESCRIPTION

R8A66156 is a semiconductor integrated circuit which has 24-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.

R8A66156 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, R8A66156 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~D24)

Parallel data I/O pins (D1~D24)

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)

GND

136

D1

SERIAL DATA OUTPUT DO

235

D2

SERIAL DATA INPUT

DI

334

D3

Vcc

433

D4

CLOCK INPUT CLK

532

D5

GND

631

D6

CHIP SELECT INPUT CS

730

D7

Vcc

829

D8

SET INPUT

S

928

GND

GND

10

27

D9

D24

11

26

D10

D23

12

25

D11

D22

13

24

D12

D21

14

23

D13

D20

15

22

D14

D19

16

21

D15

D18

17

20

D16

D17

18

19

GND

PARALLEL DATA I/O

PARALLEL DATA I/O

PARALLEL DATA I/O