3822 datasheet(31/328 Pages) RENESAS

31 / 328 page

1-16

SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER

MITSUBISHI MICROCOMPUTERS

3822 Group

Fig. 12 Port block diagram (2)

Pull-up control

Direction

Data bus

Port latch

(7)Port P45

Serial I/O output

P45/TXD P-channel output disable bit

Serial I/O enable bit

Transmission enable bit

Serial I/O mode selection bit

Serial I/O enable bit

(8)Port P46

Serial I/O clock input

Pull-up control

Data bus

Serial I/O clock output

Serial I/O clock-synchronized

selection bit

Direction

Port latch

Serial I/O ready output

(9) Port P47

Serial I/O mode selection bit

Serial I/O enable bit

SRDY output enable bit

Data bus

Pull-up control

Direction

Port latch

(10)Ports P52, P53

Real time port control bit

Pull-up control

Data bus

Port latch

Direction

Date for real time port

Timer X operating mode bit

(Pulse output mode selection)

CNTR0 interrupt input

Timer output

Pull-up control

(11) Port P54

Direction

Port latch

Data bus

(12) Ports P55, P57

CNTR1 interrupt input

A-D trigger interrupt input

Pull-up control

Data bus

Port latch

Direction

3822 Datasheet(PDF) 31 Page - Renesas Technology Corp

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