M38203M4 Datasheet, PDF (196/344 Pages) Mitsubishi Electric Semiconductor – 8-BIT SINGLE-CHIP MICROCOMPUTER

APPLICATION
2.5 Serial I/O1
Shift clock
Receive shift register
b7
b0
D0
D1 D0
D2 D1 D0
D7 D6 D5 D4 D3 D2 D1 D0
Fig. 2.5.5 Receive operation in clock synchronous mode
Receive enable bit
Write “1”
Receive buffer full
flag
Read out receive buffer register
Write data to receive buffer register
Shift clock
RxD
D0 D1 D2 D3 D4 D5 D6 D7 D0 D1
Fig. 2.5.6 Receive timing example in clock synchronous mode
2–110
3820 GROUP USER’S MANUAL