MITSUBISHI MICROCOMPUTERS
3807 Group
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
(17) Port P65
Direction register
Data bus
Port latch
(18) Port P70
Direction register
Data bus
Port latch
D-A conversion power source input
A-D conversion input
Analog input pin selection bit
(19) Port P71
P71/SOUT2 P-channel output disable bit
Serial I/O2 transmit completion signal
Serial I/O2 port selection bit
Direction register
Data bus
Port latch
Serial I/O2 clock output
(21) Port P73
SRDY2 output enable bit
Direction register
Data bus
Port latch
Serial I/O2 input
(20) Port P72
P72/SCLK2 P-channel output
Serial I/O2 synchronous disable bit
clock selection bit
Serial I/O2 port selection bit
Direction register
Data bus
Port latch
Serial I/O2 clock output
Serial I/O2 external clock input
(22) Port P51
Serial I/O2 I/O comparison
signal control bit
Direction register
Data bus
Port latch
Serial I/O2 ready output
AD external trigger valid bit
A-D trigger interrupt input
A-D conversion input
Analog input pin selection bit
(23) Ports P82—P87
Real time port output selection bit
Direction register
Data bus
Port latch
Serial I/O2 I/O comparison
signal output
Interrrupt input
Data for real time port
Fig. 12. Port block diagram (3)
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