OKI Semiconductor
FEDL9810BFULL-03
MSM9810B
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)
D3 (I/O)
D2 (I/O)
Data I/O pins
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
Select pin for channel statuses output via SR3 to SR0
Channel 1 is output when UD is 0 and channel 5
when UD is 1.
Channel 2 is output when UD is 0 and channel 6
when UD is 1.
Channel 3 is output when UD is 0 and channel 7
when UD is 1.
Channel 4 is output when UD is 0 and channel 8
when UD is 1.
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