參數(shù)資料
型號(hào)： UPD17201A
廠商： NEC Corp.
英文描述： 4-BIT SINGLE-CHIP MICROCONTROLLER WITH LCD CONTROLLER/DRIVER AND A/D CONVERTER FOR INFRARED REMOTE CONTROL TRANSMITTERS
中文描述： 4位單片機(jī)與LCD控制器/驅(qū)動(dòng)器和A / D轉(zhuǎn)換器紅外遙控遞質(zhì)
文件頁數(shù)： 30/120頁
文件大?。?/td> 516K
代理商： UPD17201A
μ
PD17201A, 17207
30
5.7
PORT CONTROL REGISTER
5.7.1
Switching between Input and Output of Grouped I/O Port
A grouped I/O port is a port whose four bits are assigned all inputs or all outputs at a time. Grouped I/O ports are
P0A, P0B, P0C, P0D, and P1A. Their selection of inputs or outputs is performed by the following I/O control register.
When the bits of each port are assigned from inputs to outputs, its output latch is output to the port.
Fig. 5-1 I/O Control Register for Grouped I/O Ports
P0AGIO
0
1
Places port 0A in input mode
Places port 0A in output mode
Function
P0BGIO
0
1
Places port 0B in input mode
Places port 0B in output mode
Function
P0CGIO
0
1
Places port 0C in input mode
Places port 0C in output mode
Function
P1AGIO
0
1
Places port 1A in input mode
Places port 1A in output mode
Function
Bit 3
Bit 2
Bit 1
Bit 0
P1AGIO
P0CGIO
P0BGIO
P0AGIO
R/W
R/W
R/W
0
0
0
0
Read/write
Default at reset
R: Read, W: Write
RF: Address 37H
R/W
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相關(guān)代理商/技術(shù)參數(shù)
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