Technical information
30
MITSUBISHI MICROCOMPUTERS
3820 Group
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
Fig. 22 Timing of serial I/O2 function
D
7
D
0
D
1
D
2
D
3
D
4
D
5
D
6
Transfer clock (Note 1)
Serial I/O2 output S
OUT2
Serial I/O2 input S
IN2
Receive enable signal S
RDY2
Serial I/O2 register
write signal
(Note 2)
Serial I/O2 interrupt request bit set
1: When the internal clock is selected as the transfer clock, the divide ratio can be selected by setting bits 0 to 2 of the serial
I/O2 control register.
2: When the internal clock is selected as the transfer clock, the S
OUT2
pin goes to high impedance after transfer completion.
Notes