R8A66151SP Datasheet, PDF (1/8 Pages) Renesas Technology Corp – 24-BIT I/O EXPANDER

R8A66151SP
REJ03F0258-0100
Rev. 1.00
24-BIT I/O EXPANDER

Jan.08.2008


D

ESCRIPTION
R8A66151 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.
R8A66151 is useful in a wide range of applications, such as MCU (micro controller
unit) I/O port extension
and serial bus system data communication. R8A66151 is the succession product of M66010.



F
EATURES
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^oC)


A
PPLICATION
Serial - parallel or parallel - serial data conversion for MCU peripheral.
Serial bus control by MCU.




PIN CONFIGURATION (TOP VIEW)








SERIAL DATA OUTPUT DO
1


SERIAL DATA INPUT DI
2


CLOCK INPUT CLK
3


CHIP SELECT INPUT CS
4




Vcc
5


SET INPUT S
6


GND
7


D24
8


D23
9


D22
10


1"3"--&-
%"5"
D21
11


*0
D20
12


D19
13


D18
14




D17
15


GND
16


32
D1
31
D2
30
D3
29
D4
28
D5
27
D6
26
D7
25
D8
24
D9
PARALLEL DATA
I/O
23
D10
22
D11
21
D12
20
D13
19
D14
18
D15
17
D16








REJ03F0258-0100 Rev.1.00 Jan.08.2008
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