參數(shù)資料
型號: MCP23016
廠商: Microchip Technology Inc.
英文描述: 16-Bit I2C I/O Expander(16位I/O口擴(kuò)展芯片)
中文描述: 16位I2C I / O擴(kuò)展(16位的I / O口擴(kuò)展芯片)
文件頁數(shù): 6/38頁
文件大?。?/td> 578K
代理商: MCP23016
MCP23016
DS20090B-page 6
2003 Microchip Technology Inc.
1.7.1
DATA PORT REGISTERS
Two registers provide access to the two GPIO ports:
GP0 (provides access to data port GP0)
GP1 (provides access to data port GP1)
A read from this register provides status on pins of
these ports. A write to these registers will modify the
output latch registers (OLAT0, OLAT1) and data output.
REGISTER 1-1:
GP0 - GENERAL PURPOSE I/O PORT REGISTER 0
R/W-0
R/W-0
R/W-0
GP0.6
GP0.5
GP0.4
REGISTER 1-2:
GP1 - GENERAL PURPOSE I/O PORT REGISTER 1
R/W-0
R/W-0
R/W-0
GP1.6
GP1.5
GP1.4
R/W-0
GP0.7
bit 7
R/W-0
GP0.3
R/W-0
GP0.2
R/W-0
GP0.1
R/W-0
GP0.0
bit 0
bit 7-0
GP0.0:GP0.7
: Reflects the logic level on the pins.
1
= Logic ‘
1
0
= Logic ‘
0
Legend:
R = Readable bit
- n = Value at POR
W = Writable bit
1
’ = Bit is set
U = Unimplemented bit, read as ‘0’
0
’ = Bit is cleared
x = Bit is unknown
R/W-0
GP1.7
bit 7
R/W-0
GP1.3
R/W-0
GP1.2
R/W-0
GP1.1
R/W-0
GP1.0
bit 0
bit 7-0
GP1.0:GP1.7
: Reflects the logic level on the pins.
1
= Logic ‘
1
0
= Logic ‘
0
Legend:
R = Readable bit
- n = Value at POR
W = Writable bit
1
’ = Bit is set
U = Unimplemented bit, read as ‘0’
0
’ = Bit is cleared
x = Bit is unknown
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