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PC87391 데이터시트(PDF) 78 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
부품명 PC87391
상세설명  100-Pin LPC SuperI/O Devices for Portable Applications
PDF  148 Pages
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제조업체  NSC [National Semiconductor (TI)]
홈페이지  http://www.national.com
Logo NSC - National Semiconductor (TI)

PC87391 데이터시트(HTML) 78 Page - National Semiconductor (TI)

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3.0 General-Purpose Input/Output (GPIO) Port (Continued)
78
www.national.com
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
configuration.
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 configuration 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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