參數(shù)資料
型號: MCP23018T-E/MJ
廠商: Microchip Technology
文件頁數(shù): 20/56頁
文件大?。?/td> 0K
描述: IC I/O EXPANDER I2C 16B 24QFN
標(biāo)準(zhǔn)包裝: 3,300
接口: I²C
輸入/輸出數(shù): 16
中斷輸出:
頻率 - 時鐘: 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: 24-VFQFN 裸露焊盤
供應(yīng)商設(shè)備封裝: 24-QFN(4x4)
包裝: 帶卷 (TR)
2008 Microchip Technology Inc.
DS22103A-page 27
MCP23018/MCP23S18
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 1-11:
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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