参数资料
型号: MCP23016-I/ML
厂商: Microchip Technology
文件页数: 38/38页
文件大小: 0K
描述: IC I/O EXPANDER I2C 16B 28QFN
标准包装: 61
接口: I²C
输入/输出数: 16
中断输出:
频率 - 时钟: 400kHz
电源电压: 2 V ~ 5.5 V
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 28-VQFN 裸露焊盘
供应商设备封装: 28-QFN(6x6)
包装: 管件
包括: POR
产品目录页面: 684 (CN2011-ZH PDF)
2007 Microchip Technology Inc.
DS20090C-page 9
MCP23016
1.7.4
I/O DIRECTION REGISTERS
Two registers control the direction of data I/O:
IODIR0 (controls GP0)
IODIR1 (controls GP1)
When a bit in these registers is set, the corresponding
pin becomes an input. Otherwise, it becomes an
output. At Power-on Reset, the device ports are
configured as inputs.
REGISTER 1-7:
IODIR0 - I/O DIRECTION REGISTER 0
REGISTER 1-8:
IODIR1 - I/O DIRECTION REGISTER 1
R/W-1
IOD0.7
IOD0.6
IOD0.5
IOD0.4
IOD0.3
IOD0.2
IOD0.1
IOD0.0
bit 7
bit 0
bit 7-0
IOD0.0:IO0.7: Controls the direction of data I/O
1
= Input
0
= Output
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
R/W-1
IOD1.7
IOD1.6
IOD1.5
IOD1.4
IOD1.3
IOD1.2
IOD1.1
IOD1.0
bit 7
bit 0
bit 7-0
IOD1.0:IO1.7: Controls the direction of data I/O
1
= Input
0
= Output
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
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