參數(shù)資料
型號(hào): MCP23009-E/SO
廠商: Microchip Technology
文件頁(yè)數(shù): 17/50頁(yè)
文件大?。?/td> 0K
描述: IC I/O EXPANDER I2C 8B 18SOIC
標(biāo)準(zhǔn)包裝: 42
接口: I²C
輸入/輸出數(shù): 8
中斷輸出:
頻率 - 時(shí)鐘: 3.4MHz
電源電壓: 1.8 V ~ 5.5 V
工作溫度: -40°C ~ 125°C
安裝類型: 表面貼裝
封裝/外殼: 18-SOIC(0.295",7.50mm 寬)
供應(yīng)商設(shè)備封裝: 18-SOIC
包裝: 管件
產(chǎn)品目錄頁(yè)面: 684 (CN2011-ZH PDF)
MCP23009/MCP23S09
DS22121B-page 24
2009 Microchip Technology Inc.
1.6.9
INTERRUPT CAPTURE REGISTER
The INTCAP register captures the GPIO port value at
the time the interrupt occurred. The register is ‘read
only’ and is updated only when an interrupt occurs. The
register will remain unchanged until the interrupt is
cleared via a read of INTCAP or GPIO.
REGISTER 1-9:
INTCAP – INTERRUPT CAPTURED VALUE FOR PORT REGISTER
R-x
ICP7
ICP6
ICP5
ICP4
ICP3
ICP2
ICP1
ICP0
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
ICP7:ICP0: Reflects the logic level on the port pins at the time of interrupt due to pin change <7:0>.
1
=Logic-high
0
= Logic-low
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