Renesas PCA4738L-64A Technical Information PDF herunterladen (Seite 23)

SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER

3822 Group

MITSUBISHI MICROCOMPUTERS

Fig. 16 Port block diagram (2)

Direction register

Port latch

Serial I/O enable bit

Transmit enable bit

D P-channel output disable bit

Pull-up control

(7) Port P4

Serial I/O output

Data bus

Direction register

Port latchData bus

Serial I/O ready output

Serial I/O mode selection bit

Pull-up control

(9) Port P4

(8) Port P4

Serial I/O clock-

synchronized selection bit

Serial I/O enable bit

Serial I/O mode selection bit

Serial I/O enable bit

Direction register

Port latch

Serial I/O clock output

Data bus

Serial I/O clock input

Pull-up control

(10) Ports P5

Direction register

Port latchData bus

Pull-up control

Real time port control bit

Data for real time port

Direction register

Port latch

Data bus

Pull-up control

(12) Ports P5

CNTR

interrupt input

A-D trigger interrupt input

(11) Port P5

Direction register

Port latchData bus

Pull-up control

Timer X operating mode bit

Timer output

CNTR

interrupt input

Serial I/O enable bit

RDY

output enable bit

(Pulse output mode selection)

1 2 ... 18 19 20 21 22 23 24 25 26 27 28 ... 81 82

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