M38203M4 Datasheet, PDF (233/344 Pages) Mitsubishi Electric Semiconductor – 8-BIT SINGLE-CHIP MICROCOMPUTER

APPLICATION
2.6 Serial I/O2
sTransmit/receive timing example of the serial I/O2
Figure 2.6.7 shows a transmit/receive timing example of the serial I/O2 (the P53/SRDY2 pin is used).
3820 group Œ
SCLK2
SOUT2
P53(SRDY2)
3820 group 
SCLK2
SIN2
SRDY2
Shift clock
Serial I/O2 register
write signal
Serial I/O2 output
SOUT2
D0 D1 D2 D3 D4 D5 D6 D7 (Note)
Serial I/O2 input
SIN2
Receive enable signal
SRDY2
D0
D1
D2
D3
D4
D5
D6
D7
Set an interrupt request bit
Note: When an internal clock is selected, the P51/SOUT2 pin is put into the high-impedance state
after the completion of a transmit/receive.
Fig. 2.6.7 Transmit/receive timing example of serial I/O2 (P53/SRDY2 pin is used)
3820 GROUP USER’S MANUAL
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