MITSUBISHI < STD. LINEAR ICs >
M62320P,FP
8-BIT I/O EXPANDER for I C BUS
GENERAL 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
2
thanks to the adoption of the two-line I C 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.
PIN CONFIGURATION(TOP VIEW)
2
SO 1
SCL
SDA
D0
D1
D2
D3
GND
2
16 CS0
15 CS1
M62320P,FP
3
4
5
6
7
8
14 CS2
13 V
DD
12 D7
11 D6
10 D5
9 D4
FEATURES
• Simple two-line (SCL and SDA) communication with a
microcontroller.
• 8-bit data conversion between serial and parallel by
I
2
C BUS.
• Built-in power-on reset.
Outline 16P4(P)
16P2N(FP)
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
SDA
2
3
I C BUS
TRANSCEIVER
Output Data
8
OUTPUT DATA
LATCH
2
SHIFT
REGISTER
1
SO
Input/Output
8
8
I/O SETTING
DATA LATCH
INPUT DATA
LATCH
8
8
V
DD
13
GND
8
8
Input Data
POWER-ON
RESET
Å@ PORT
I/O
12
11
10
9
7
6
5
4
D7
D6
D5
D4
D3
D2
D1
D0
2/20,1998(rev) ( 1 / 9 )
MITSUBISHI ELECTRIC
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