R8A66154SP Datasheet, PDF (1/8 Pages) Renesas Technology Corp – 8-bit I/O EXPANDER WITH LED DRIVE FUNCTION

R8A66154SP
8-bit I/O EXPANDER WITH LED DRIVE FUNCTION
REJ03F0285-0100
Rev. 1.00
Dec.08.2009
DESCRIPTION
R8A66154 is a semiconductor integrated circuit which has 8-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.
R8A66154 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, R8A66154 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~D8).
High output current IOL=24mA (at VCC=4.5V), IOL=15mA (at VCC=3.0V)
Parallel data I/O pins (D1~D8)
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
1
SERIAL DATA OUTPUT DO
2
SERIAL DATA INPUT DI
3
CLOCK INPUT CLK
4
CHIP SELECT INPUT CS
5
Vcc
6
SET INPUT S
7
GND
8
16
D1
15
D2
14
D3
13
D4
PARALLEL DATA I/O
12
D5
11
D6
10
D7
9
D8
REJ03F0285-0100 Rev.1.00 Dec.08.2009
Page 1 of 7