參數(shù)資料
型號(hào): MCP23S18-E/SP
廠商: Microchip Technology
文件頁數(shù): 11/56頁
文件大?。?/td> 0K
描述: IC EXPANDER SPI 16BIT I/O 28SDIP
標(biāo)準(zhǔn)包裝: 15
接口: SPI
輸入/輸出數(shù): 16
中斷輸出:
頻率 - 時(shí)鐘: 10MHz
電源電壓: 1.8 V ~ 5.5 V
工作溫度: -40°C ~ 125°C
安裝類型: 通孔
封裝/外殼: 28-DIP(0.300",7.62mm)
供應(yīng)商設(shè)備封裝: 28-DIP
包裝: 管件
產(chǎn)品目錄頁面: 684 (CN2011-ZH PDF)
2008 Microchip Technology Inc.
DS22103A-page 19
MCP23018/MCP23S18
1.6.2
INPUT POLARITY REGISTER
This register allows the user to configure the polarity on
the corresponding GPIO port bits.
If a bit is set, the corresponding GPIO register bit will
reflect the inverted value on the pin.
REGISTER 1-4:
IPOL – INPUT POLARITY PORT REGISTER
R/W-0
IP7
IP6
IP5
IP4
IP3
IP2
IP1
IP0
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
IP7:IP0: Controls the polarity inversion of the input pins <7:0>
1
= GPIO register bit will reflect the opposite logic state of the input pin.
0
= GPIO register bit will reflect the same logic state of the input pin.
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