MITSUBISHI MICROCOMPUTERS
3827 Group
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
(6) Port P45
(7) Port P46
Serial I/O1 clock
selection bit
Serial I/O1 enable bit
Pull-up control
Pull-up control
P45/TxD P-channel output disable bit
Serial I/O1 mode selection bit
Serial I/O1 enable bit
Direction register
Serial I/O1 enable bit
Transmission enable bit
Direction register
Port latch
Data bus
Data bus
Port latch
Serial I/O1 output
Serial I/O1 clock outupt
Serial I/O1 clock input
(8) Port P47
(9) Ports P52, P53
Pull-up control
Pull-up control
Serial I/O1 mode selection bit
Serial I/O1 enable bit
SRDY1 output enable bit
Direction register
Direction register
Port latch
Data bus
Data bus
Port latch
Real time control bit
Real time port data
Serial I/O1 ready output
Pull-up control
(11) Port P54
(10) Ports P50,P51
Pull-up control
Direction register
Direction register
Port latch
Data bus
Data bus
Port latch
Pulse output mode
Timer output
PWM function enable bit
PWM output
CNTR0 interrupt input
Fig. 11 Port block diagram (2)
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MITSUBISHI [ Mitsubishi Group ]
