Renesas PCA4738F-80A Manual do Utilizador descarregar pdf (Página 14)

SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER

MITSUBISHI MICROCOMPUTERS

38C3 Group

Fig. 11 Port block diagram (2)

(7)Port P4

Data bus

Serial I/O port selection bit

Serial I/O output

P-channel output disable bit

Port latch

Direction register

Pull-up control

(9)Port P4

Data bus

Serial I/O ready output

Port latch

RDY

output enable bit

Direction register

Pull-up control

(8)Port P4

Serial I/O clock output

Serial I/O clock input

Serial I/O mode selection bit

Port latch

Direction register

Pull-up control

P-channel output disable bit

(10)Port P5

Data bus

Port latch

Direction register

Pull-up control

Timer A output enable bit

Timer A output

(12)Ports P5

–P5

INT

–INT

interrupt input

Data bus

Direction register

Port latch

Pull-up control

(11)Port P5

Data bus

(Note)

Note: The initihal value of M version becomes “1” (output).

Data bus

CNTR

,CNTR

interrupt input

1 2 ... 9 10 11 12 13 14 15 16 17 18 19 ... 63 64

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