參數(shù)資料
型號(hào): MCP23S08-E/P
廠商: Microchip Technology
文件頁數(shù): 8/44頁
文件大?。?/td> 0K
描述: IC I/O EXPANDER SPI 8B 18DIP
產(chǎn)品培訓(xùn)模塊: GPIO Expanders
標(biāo)準(zhǔn)包裝: 25
接口: SPI
輸入/輸出數(shù): 8
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: 18-DIP(0.300",7.62mm)
供應(yīng)商設(shè)備封裝: 18-PDIP
包裝: 管件
包括: POR
產(chǎn)品目錄頁面: 684 (CN2011-ZH PDF)
配用: GPIODM-KPLCD-ND - BOARD DEMO LCD GPIO EXP KEYPAD
MCP23008/MCP23S08
DS21919E-page 16
2007 Microchip Technology Inc.
1.6.7
PULL-UP RESISTOR
CONFIGURATION (GPPU)
REGISTER
The GPPU register controls the pull-up resistors for the
port pins. If a bit is set and the corresponding pin is
configured as an input, the corresponding port pin is
internally pulled up with a 100 k
Ω resistor.
REGISTER 1-7:
GPPU – GPIO PULL-UP RESISTOR REGISTER (ADDR 0x06)
R/W-0
PU7
PU6
PU5
PU4
PU3
PU2
PU1
PU0
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
PU7:PU0: These bits control the weak pull-up resistors on each pin (when configured as an input)
<7:0>.
1 = Pull-up enabled.
0 = Pull-up disabled.
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