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Renesas - 24-bit I/O EXPANDER

Numéro de référence R8A66156SP
Description 24-bit I/O EXPANDER
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R8A66156SP fiche technique
R8A66156SP
24-bit I/O EXPANDER WITH LED DRIVE FUNCTION
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)
High output current IOL=24mA (at VCC=4.5V), IOL=15mA (at VCC=3.0V)
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
SERIAL DATA OUTPUT DO
SERIAL DATA INPUT DI
Vcc
CLOCK INPUT CLK
GND
CHIP SELECT INPUT CS
Vcc
SET INPUT S
GND
D24
D23
D22
PARALLEL DATA I/O
D21
D20
D19
D18
D17
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
36 D1
35 D2
34 D3
33 D4
PARALLEL DATA I/O
32 D5
31 D6
30 D7
29 D8
28 GND
27 D9
26 D10
25 D11
24 D12
PARALLEL DATA I/O
23 D13
22 D14
21 D15
20 D16
19 GND
REJ03F0283-0100 Rev.1.00 Sep.14.2009
Page 1 of 7
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Free Datasheet http://www.datasheet4u.com/

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