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R8A66152SP 반도체 회로 부품 판매점

12-BIT I/O EXPANDER



Renesas Technology 로고
Renesas Technology
R8A66152SP 데이터시트, 핀배열, 회로
R8A66152SP
12-BIT I/O EXPANDER WITH LED DRIVE FUNCTION
REJ03F0259-0100
Rev. 1.00
Jan.9.2008
DESCRIPTION
R8A66152 is a semiconductor integrated circuit which has 12-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.
R8A66152 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, R8A66152 can be used as the anode common LED drive, too.
www.DataSheet4U.com
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~D12).
High output current IOL=24mA (at VCC=4.5V), IOL=15mA (at VCC=3.0V)
Parallel data I/O pins (D1~D12)
Wide supply voltage range (Vcc=2.0 to 6.0V)
Wide operating temperature range (Ta=-40 to 85oC)
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
PARALLEL DATA
I/O
D12
D11
GND
1
2
3
4
5
6
7
8
9
10
Package : 20pin plastic SOP (Lead pitch : 1.27mm)
20 D1
19 D2
18 D3
17 D4
16 D5 PARALLEL DATA
15 D6 I/O
14 D7
13 D8
12 D9
11 D10
REJ03F0259-0100 Rev.1.00 Jan.9.2008
Page 1 of 7


R8A66152SP 데이터시트, 핀배열, 회로
R8A66152SP
BLOCK DIAGRAM
Vcc
5
CLK 3
S6
CS 4
www.DataSheet4U.com
DI 2
Shift register 1 DO
D12 D11 D10
D3 D2 D1
1 DO
20 D1
19 D2
18 D3
Q12 Q11 Q10
Q3 Q2 Q1
Parallel output latch
D12 D11 D10
D3 D2 D1
Q12 Q11 Q10
Q3 Q2 Q1
DI Shift register 2
11 D10
9 D11
8 D12
7 10
GND GND
Vcc
CLK, S, CS, DI
S
Input type
Vcc Vcc
DO D1~D12
Output type
FUNCTION
The R8A66152 is produced by using the silicon gate CMOS technology and has low power dissipation and
high noise margin.
Built in two shift registers for serial in-parallel out (Shift register 2) and parallel in-serial out (Shift register 1)
are constructed independently, R8A66152 is able to read serial input data into a shift register while output
the serial data converting from the parallel data input.
Serial output operation of 12-bit parallel latched data and serial input operation from MCU are started when
/CS is changed from "H" to "L".
12-bits parallel data are latched by the negative edge of /CS and are output from the DO terminal
synchronously to the negative edge of CLK, and also the DI terminal read serial input data from MCU and
are written into the internal shift register 2.
The 13th and following shift clock pulse are ignored and serial input data is masked, and DO terminal
becomes high-impedance ("High-Z").
When /CS is changed from "L" to "H", 12-bits serial data which is read from the DI terminal are output to the
D1~D12 terminals as parallel data.
As the output circuit type of D1~D12 terminals is N-ch open drain output, write data "H" for pins which should
be set to input mode.
REJ03F0259-0100 Rev.1.00 Jan.9.2008
Page 2 of 7




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