参数资料
型号: MCP23017-E/SP
厂商: Microchip Technology
文件页数: 5/48页
文件大小: 0K
描述: IC I/O EXPANDER I2C 16B 28SDIP
产品培训模块: GPIO Expanders
标准包装: 15
接口: I²C
输入/输出数: 16
中断输出:
频率 - 时钟: 1.7MHz
电源电压: 1.8 V ~ 5.5 V
工作温度: -40°C ~ 125°C
安装类型: 通孔
封装/外壳: 28-DIP(0.300",7.62mm)
供应商设备封装: 28-DIP
包装: 管件
产品目录页面: 684 (CN2011-ZH PDF)
配用: MCP23X17EV-ND - BOARD EVAL FOR MCP23X17
GPIODM-KPLCD-ND - BOARD DEMO LCD GPIO EXP KEYPAD
2007 Microchip Technology Inc.
DS21952B-page 13
MCP23017/MCP23S17
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 1-2:
IPOL – INPUT POLARITY PORT REGISTER (ADDR 0x01)
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: These bits control 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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