M38514E6FP 查看數據表（PDF） - MITSUBISHI ELECTRIC

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M38514E6FP

SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER

MITSUBISHI ELECTRIC  

(1) Port P0, P1

Direction

register

Data bus

Port latch

(3) Port P21

Port XC switch bit

Direction

register

Data bus

Port latch

Sub-clock generating circuit input

(5) Port P23

I2C-BUS interface enable bit

SDA/SCL pin selection bit

Direction

register

Data bus

Port latch

SCL output

SCL input

(7) Port P25

P-channel output disable bit

Serial I/O enable bit

Transmit enable bit

I2C bus interface enable bit

SDA/SCL pin selection bit

Direction

register

Data bus

Port latch

Serial I/O output

SCL output

SCL input

Fig. 7 Port block diagram (1)

MITSUBISHI MICROCOMPUTERS

3851 Group

SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER

(2) Port P20

Port XC switch bit

Direction

register

Data bus

Port latch

(4) Port P22

I2 C-BUS interface enable bit

SDA/SCL pin selection bit

Direction

register

Data bus

Port latch

Oscillator

Port P21

Port XC switch bit

SDA output

(6) Port P24

I2C-BUS interface enable bit

SDA/SCL pin selection bit

Serial I/O enable bit

Receive enable bit

Data bus

Direction

register

Port latch

SDA input

SDA output

(8) Port P26

Serial I/O enable bit

Serial I/O clock selection bit

Serial I/O mode selection bit

Serial I/O enable bit

Direction

register

Data bus

Port latch

SDA input

Serial I/O input

Serial clock output

External clock input

9

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