3820 datasheet(34/349 Pages) RENESAS

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3820 GROUP USER’S MANUAL

MITSUBISHI MICROCOMPUTERS

3820 Group

SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER

Serial I/O2 output

Direction register

Port latch

Data bus

Pull-up control

Serial I/O1 ready output

(11) Port P51

(9) Port P47

Serial I/O1 mode selection bit

Serial I/O1 enable bit

Direction register

Port latch

Data bus

Pull-up control

SRDY1 output enable bit

Serial I/O2 transmit completion signal

Serial I/O2 port selection bit

Direction register

Port latch

Data bus

Pull-up control

SRDY2 output enable bit

Direction register

Port latch

Data bus

Pull-up control

Timer output

TOUT output control bit

Serial I/O2 ready output

(10) Ports P50,P55

(12) Port P52

Direction register

Port latch

Data bus

Pull-up control

Serial I/O2 input

CNTR1 interrupt input

Serial I/O2 clock output

Serial I/O2 clock input

Direction register

Port latch

Data bus

Pull-up control

Internal synchronization clock

select bits

Serial I/O2 port selection bit

Timer X operating mode bit

Timer output

CNTR0 interrupt input

(Pulse output mode selection)

Direction register

Port latch

Data bus

Pull-up control

Real time port control bit

INT3 interrupt input

Except P61

Data for real time port

Direction register

Port latch

Data bus

Pull-up control

(14) Port P54

(16) Ports P60, P61

(15) Port P56

(13) Port P53

Fig. 13 Port block diagram (2)

3820 Datasheet(PDF) 34 Page - Renesas Technology Corp

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