参数资料
型号: MB89T635P-SH
元件分类: 微控制器/微处理器
英文描述: 8-BIT, 10 MHz, MICROCONTROLLER, PDIP64
封装: SHRINK, DIP-64
文件页数: 100/153页
文件大小: 7326K
代理商: MB89T635P-SH
HARDWARE CONFIGURATION
2-27
2.2 RESOURCE FUNCTIONS
2.2.1 I/O Ports
The MB89630 series of microcontrollers have eight parallel ports (53 ports). Ports 0, 1, and 3 serve as 8-
bit I/O ports; ports 4 and 5 serve as 4-bit I/O ports; ports 2, and 6 serve as 8-bit output-only ports and
port 7 serves as a 5-bit input-only port.
Each port is also used as a resource (ports 3, 4, 5, and 7) and as external-bus pins (ports 0 to 2).
Table 2.4 List of Port Functions
Note: Output type of P33, P34, and P35 can be selected from the CMOS or N-ch open drain.
P70 and P71 serve as P70/INT0 and P71/INT1 at single clock operation and as X1A and X0A at
double clock operation, respectively.
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