参数资料
型号: M38503M2H-XXXSP
元件分类: 微控制器/微处理器
英文描述: 8-BIT, MROM, 8 MHz, MICROCONTROLLER, PDIP42
封装: 0.600 INCH, 1.78 MM PITCH, SHRINK, PLASTIC, DIP-42
文件页数: 18/99页
文件大小: 1419K
代理商: M38503M2H-XXXSP
25
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
MITSUBISHI MICROCOMPUTERS
Fig. 19 Structure of port registers (1) (spec. A)
3850 Group (Spec. A)
Port P0, P1, P2 pull-up control register
b7
b0
P0 pull-up control bit
0: No pull-up
1: Pull-up
P1 pull-up control bit
0: No pull-up
1: Pull-up
P2 pull-up control bit
0: No pull-up
1: Pull-up
Not used (return “0” when read)
b7b0
Port P3 pull-up control register
P30 pull-up control bit
0: No pull-up
1: Pull-up
P31 pull-up control bit
0: No pull-up
1: Pull-up
P32 pull-up control bit
0: No pull-up
1: Pull-up
P33 pull-up control bit
0: No pull-up
1: Pull-up
P34 pull-up control bit
0: No pull-up
1: Pull-up
Fix these bits to “0”.
(PULL3: address 001316)
(PULL012: address 001216)
Note: Pull-up control is valid when the corresponding bit
of the port direction register is “0” (input).
When that bit is “1” (output), pull-up cannot be set
to the port of which pull-up is selected.
Note: Pull-up control is valid when the corresponding bit
of the port direction register is “0” (input).
When that bit is “1” (output), pull-up cannot be set
to the port of which pull-up is selected.
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