M62320FP 데이터 시트보기 (PDF) - Renesas Electronics

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M62320FP

8-bit I/O Expander for I²C BUS

Renesas Electronics 

M62320P/FP

8-bit I/O Expander for I2C BUS

REJ03D0863-0300

Rev.3.00

Mar 25, 2008

Description

The M62320P/FP 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

VDD 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

REJ03D0863-0300 Rev.3.00 Mar 25, 2008

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