参数资料
型号: PC87393F-VJG
厂商: NATIONAL SEMICONDUCTOR CORP
元件分类: 外设及接口
英文描述: 100-Pin LPC SuperI/O Devices for Portable Applications
中文描述: MULTIFUNCTION PERIPHERAL, PQFP100
封装: TQFP-100
文件页数: 125/148页
文件大小: 1733K
代理商: PC87393F-VJG
3.0 General-Purpose Input/Output (GPIO) Port (Continued)
78
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3.4.4
GPIO Data Out Register (GPDO)
Location:
Device specific
Type:
R/W
3.4.5
GPIO Data In Register (GPDI)
Location:
Device specific
Type:
RO
Bit
76543210
Name
Data Out
Reset
11111111
Bit
Description
7
Data Out. Bits 7-0 correspond to pins 7-0 respectively. The value of each bit determines the value driven on the
corresponding GPIO pin when its output buffer is enabled. Writing to the bit latches the written data unless the
bit is locked by the GPCFG register Lock bit. Reading the bit returns its value, regardless of the pin value and
conguration.
0: Corresponding pin driven to low when output enabled
1: Corresponding pin driven or released to high (according to buffer type and static pull-up selection) when
output enabled
6
5
4
3
2
1
0
Bit
76543210
Name
Data In
Reset
XXXXXXXX
Bit
Description
7
Data In. Bits 7-0 correspond to pins 7-0 respectively. Reading each bit returns the value of the corresponding
GPIO pin, regardless of the pin conguration and the GPDO register value. Write is ignored.
0: Corresponding pin level low
1: Corresponding pin level high
6
5
4
3
2
1
0
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