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LM8322 bảng dữ liệu(PDF) 32 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
tên linh kiện LM8322
Giải thích chi tiết về linh kiện  Mobile I/O Companion Supporting Key-Scan, I/O Expansion, PWM, and ACCESS.bus Host Interface
PDF  42 Pages
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nhà sản xuất  NSC [National Semiconductor (TI)]
Trang chủ  http://www.national.com
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LM8322 bảng dữ liệu(HTML) 32 Page - National Semiconductor (TI)

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17.7 WRITE_PORT_STATE COMMAND
The WRITE_PORT_STATE command consists of a com-
mand byte (0x86) and two data bytes from the host. For
general-purpose I/O ports configured as inputs, the data
bytes select whether the inputs are high-impedance (0) or
have a weak pullup (1). For ports configured as outputs, the
data bytes control the state driven on the output. The first data
byte controls ports GPIO_15 through GPIO_08, and the sec-
ond byte controls ports GPIO_07 through GPIO_00.
Bit
Value
Description
GPIO_xx
0
If the GPIO port pin is an input, pullup/pulldown device is disabled. If the GPIO port
pin is an output, it is driven low.
1
If the GPIO port pin is an input, pullup/pulldown device is enabled. If the GPIO port
pin is an output, it is driven high.
17.8 READ_PORT_SEL COMMAND
The READ_PORT_SEL command consists of a command
byte (0x87) from the host and two data bytes from the
LM8322. The data bytes indicate the direction configured for
the corresponding ports, either input (0) or output (1). The first
data byte controls ports GPIO_15 through GPIO_08, and the
second byte controls ports GPIO_07 through GPIO_00.
7
6
5
4
3
2
1
0
7
6
5
4
3
2
1
0
7
6
5
4
3
2
1
0
1
0
0
0
0
1
1
1
Bit
Value
Description
GPIO_xx
0
GPIO port pin is an input.
1
GPIO port pin is an output.
www.national.com
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