参数资料
型号: MC68HC05C12ACB
厂商: MOTOROLA INC
元件分类: 微控制器/微处理器
英文描述: 8-BIT, MROM, 2.1 MHz, MICROCONTROLLER, PDIP42
封装: SHRINK, PLASTIC, DIP-42
文件页数: 105/156页
文件大小: 756K
代理商: MC68HC05C12ACB
NON-DISCLOSURE
AGREEMENT
REQUIRED
Input/Output (I/O) Ports
General Release Specification
MC68HC05C12A Rev. 3.0
52
Input/Output (I/O) Ports
MOTOROLA
Figure 7-2. I/O Circuitry
READ DDRx
WRITE DDRx
RESET
WRITE PORTx
READ PORTx
INTERNAL
D
AT
A
BUS
PORT x DATA
DATA DIRECTION
REGISTER x BIT
REGISTER BIT
(LATCHED OUTPUT)
I/O
PIN
[1]
[2]
[3]
[1] This output buffer enables the latched output to drive the pin when DDR bit is 1 (output mode).
[2] This input buffer is enabled when DDR bit is 0 (input mode).
[3] This input buffer is enabled when DDR bit is 1 (output mode).
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