MA009A Datasheet, PDF (2/19 Pages) Megawin Technology Co., Ltd – 24-bit I/O extender with interrupt function

General Description
The MA009 is high-speed Si-gate CMOS devices
that provide a general purpose I/O peripheral. The
MA009 provides microcontroller eight input pins
plus eight I/O pins and eight output pins. Each
input pin can be configured as interrupt source and
output pin can be configured as CMOS/NMOS
output. The MA009 is controlled through a 3-wire
serial interface, and can be set as one of eight chip
addresses by pin option. The device is optimized
for use in many commercial and industrial
applications where high density, low pin count,
low voltage, and low power are essential.
Pad Description
Pad No.
1, 8, 9
2, 3, 4
5
6
7
10
20 to 13
29 to 22
38 to 31
12, 30, 40, 41
11, 21, 39
Pad Name
NC
A0, A1, A2
C/DB
SCLK
Sin
INTB
P20 to P27
P10 to P17
P00 to P07
VCC
GND
I/O
Description
I
No connection
I
Chip Address bit0, bit1, bit2
I
Serial interface, command/data selector
I
Serial interface, serial clock
I
Serial interface, serial command/data input
O Input port interrupt event indicator
O Output Port 2
O Input/Output Port 1
O Input Port 0
P
Positive supply voltage
P
Power ground (0 V)
2
MA009A Technical Summary
MEGAWIN