參數(shù)資料
型號(hào): UPD17242UC-XXX-5A4
元件分類: 微控制器/微處理器
英文描述: 4-BIT, MROM, 4.5 MHz, MICROCONTROLLER, PDSO30
封裝: 0.300 INCH, PLASTIC, SSOP-30
文件頁(yè)數(shù): 35/102頁(yè)
文件大?。?/td> 953K
代理商: UPD17242UC-XXX-5A4
38
Data Sheet U15002EJ1V1DS
PD17240, 17241, 17242, 17243, 17244, 17245, 17246
3.9
Switching Bit I/O (Port 0B, 0E, 1A)
An I/O that can be set to the input or output mode in bit units is called a bit I/O. P0B, P0E, and P1A are bit I/O
ports, which can be set in the input or output mode in bit units by the register file shown below. When the mode is
changed from input to output, the P0B, P0E, and P1A output latch contents are output to the port lines as soon as
the mode has been changed.
3
210
P0BBIO3
P0BBIO2
P0BBIO1
P0BBIO0
Address
RF: 26H
After reset
0H
R/W
P0BBIO0
0
1
Sets P0B0 input/output mode
P0BBIO1
0
1
Sets P0B1 input/output mode
P0BBIO2
0
1
Sets P0B2 input/output mode
P0BBIO3
0
1
Sets P0B3 input/output mode
Sets P0B0 in input mode
Sets P0B0 in output mode
Sets P0B1 in input mode
Sets P0B1 in output mode
Sets P0B2 in input mode
Sets P0B2 in output mode
Sets P0B3 in input mode
Sets P0B3 in output mode
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