参数资料
型号: M37478E8SP
元件分类: 微控制器/微处理器
英文描述: 8-BIT, OTPROM, 8 MHz, MICROCONTROLLER, PDIP42
封装: PLASTIC, SDIP-42
文件页数: 24/48页
文件大小: 720K
代理商: M37478E8SP
29
MITSUBISHI MICROCOMPUTERS
7477/ 7478 GROUP
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
Fig. 21 Block diagram of ports P2 – P4
Data bus
Multi-
plexer
Port P2
A-D conversion circuit
Port P2
Port P3
INT0, INT1
CNTR0, CNTR1
Data bus
Port P3
Pull-up control register*
Direction register
Port latch
* : Control in units of 4-bit (Control in units of 2-bit for the 7477 group)
Tr10
Port P4
Tr10 is pull-up transistor
Port P4
Data bus
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