M62320GP Datasheet, PDF (1/11 Pages) Renesas Technology Corp – 8-bit I/O Expander for I2C BUS

M62320GP
8-bit I/O Expander for I²C BUS
REJ03D0909-0100
Rev.1.00
Mar 25, 2008
Description
The M62320GP is a CMOS 8-bit I/O expander, which has serial to parallel and parallel to serial data converting
functions.
It can communicate with a microcontroller via few wiring thanks to the adoption of the two-line I²C BUS.
Parallel data I/O terminal can be set to input or output mode alternatively in individual bits.
Maximum 8 ICs can be connected to a bus by using three chip-select pins, so that it is possible to handle up to 64 bits
data.
Features
• Simple two-line (SCL and SDA) communication with a microcontroller.
• 8-bit data conversion between serial and parallel by I²C BUS.
• Built-in power-on reset.
Application
I/O port expansion for a microcontroller.
Data conversion between serial and parallel in microcontroller peripherals.
Block Diagram
CS0 CS1 CS2
16 15 14
Chip-select
SCL 2
SDA 3
V_DD 13
GND 8
Power-on
reset
I²C Bus
transceiver
Shift register
Output data
Input/output
8
8
8
Output data
latch
I/O setting
data latch
Input data
latch
8
8
I/O port
8
Input data
1 SO
12 11 10 9 7 6 5 4
D7 D6 D5 D4 D3 D2 D1 D0
REJ03D0909-0100 Rev.1.00 Mar 25, 2008
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