CXP87948 查看數據表（PDF） - Sony Semiconductor

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产品描述 (功能)

生产厂家

CXP87948

CMOS 8-bit Single Chip Microcomputer

Sony Semiconductor 

CXP87940/87948

Input/Output Circuit Formats for Pins

Pin

PA0 /PPO0

to

PA7/PPO7

PB4/PPO12

to

PB7/PPO15

12 pins

Port A

Port B

PPO data

Ports A, B data

Circuit format

Data bus

RD (Ports A, B)

Output becomes active from high

impedance by data writing to port register.

When reset

Hi-Z

PB0/PPO8

PB2/PPO10

PPO8, PPO10 data

PB0, PB2 data

2 pins

PB1/PPO9

PB3/PPO11

Data bus

RD (Port B)

PPO9, PPO11 data

PPG control

status register

bit 0

3-state control selection

PPO9, PPO11 data

PB1, PB3 data

Data bus

RD (Port B)

2 pins

Hi-Z

Output becomes active from high

impedance by data writing to port register.

Output becomes active from high

impedance by data writing to port register.

Hi-Z

–6–

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