OKI Semiconductor
FEDL9811FULL-04
MSM9811
FUNCTIONAL DESCRIPTION
Microcontroller Interface
The microcontroller interface includes two interface circuits, parallel interface and serial interface.
The statuses of each pin both in parallel interface mode and in serial interface mode are shown below.
SERIAL = “L”
Parallel I/O interface
D7 (I/O)
D6 (I/O)
D5 (I/O)
D4 (I/O) Data I/O pins
D3 (I/O)
D2 (I/O)
D1 (I/O)
D0 (I/O)
SD (I)
SI (I)
SO (O)
UD (I)
SR3 (O)
SR2 (O)
SR1 (O)
SR0 (O)
SERIAL = “H”
Serial I/O interface
Serial data input pin
Serial clock input pin
Serial data output pin
Fix this pin at GND level
Channel status signal output pin
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