參數(shù)資料
型號(hào): MCP23S17-E/ML
元件分類(lèi): 微控制器/微處理器
英文描述: 16 I/O, PIA-GENERAL PURPOSE, PQCC28
封裝: 6 X 6 MM, PLASTIC, QFN-28
文件頁(yè)數(shù): 15/48頁(yè)
文件大?。?/td> 915K
代理商: MCP23S17-E/ML
MCP23017/MCP23S17
DS21952B-page 22
2007 Microchip Technology Inc.
1.6.10
PORT REGISTER
The GPIO register reflects the value on the port.
Reading from this register reads the port. Writing to this
register modifies the Output Latch (OLAT) register.
REGISTER 1-10:
GPIO – GENERAL PURPOSE I/O PORT REGISTER (ADDR 0x09)
R/W-0
GP7
GP6
GP5
GP4
GP3
GP2
GP1
GP0
bit 7
bit 0
Legend:
R = Readable bit
W = Writable bit
U = Unimplemented bit, read as ‘0’
-n = Value at POR
‘1’ = Bit is set
‘0’ = Bit is cleared
x = Bit is unknown
bit 7-0
GP7:GP0: These bits reflect the logic level on the pins <7:0>
1 = Logic-high.
0 = Logic-low.
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