
MITSUBISHI MICROCOMPUTERS
3802 Group
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
13
Fig. 5 Port block diagram (single-chip mode) (2)
(14) Port P6
(13) Port P56
(12) Ports P54, 55
(9) Port P51
(10) Port P52
(11) Port P53
Serial I/O2 transmit end signal
Serial I/O2 port selection bit
P51/SOUT2 P-channel output disable bit
Direction register
Data bus
Port latch
Serial I/O2 output
Serial I/O2 external clock input
Serial I/O2
synchronous clock selection bit
Serial I/O2 port selection bit
Direction register
Data bus
Port latch
Serial I/O2 clock output
Direction register
Data bus
Port latch
Serial I/O2 ready output
SRDY2 output enable bit
Direction register
Data bus
Port latch
Pulse output mode
Timer output
CNTR0, CNTR1
Interrupt input
Direction register
Data bus
Port latch
PWM output
PWM output enable bit
A-D conversion input
Direction register
Data bus
Port latch
Analog input pin selection bit