MA009A Datasheet, PDF (9/19 Pages) Megawin Technology Co., Ltd – 24-bit I/O extender with interrupt function

Command waveform example:
If we want to set the P0.0~P0.3 as interrupt source, then we can write 0FH into P0IEN register.
All the signals are sent MA009 by master(s) in this case.
COMMAND WRITE PERIOD
COMMAND
DATA
C/DB
SCLK
Sin
MSB
LSB MSB
LSB
If we want to read the interrupt status, then we can send 43H to MA009.
The last 8-bit data is sent by MA009 in this case.
COMMAND READ PERIOD
COMMAND
DATA
C/DB
SCLK
Sin
MSB
LSB
MSB
LSB
MEGAWIN
MA009A Technical Summary
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