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PCA9535E 通过 I2C 总线和 SMBus 提供 16 位通用并行输入/输出 (GPIO) 扩展。 PCA9535E 包括两个 8 位配置输入或输出选项;输入、输出和极性反向(有效高电平或有效低电平运行)寄存器。通电时,所有 I/O 均默认为输入。每个 I/O 均可通过写入相应的 I/O 配置位配置为输入或输出。每个输入或输出的数据均保留在其相应输入或输出寄存器中。极性反向寄存器可用于在读取寄存器时对极性进行反向。所有寄存器均可由主系统读取。 PCA9655E 提供开漏中断输出,当任何输入状态与其相应的输入端口寄存器状态不同时则会激活。该中断输出用于向主系统指示输出状态已发生改变。电源接通重置会将寄存器设置为其默认值,并启动器件状态机。 三个硬件引脚(AD0、AD1、AD2)用于配置该器件的 I2C 总线从地址。允许最多 64 个器件共享相同的 I2C 总线和 SMBus。
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Reference Price
PCA9655EDTR2G
Lifetime
Pb
A
H
P
TSSOP-24
1
260
REEL
2500
N
16
8 Slave ID Addresses
1.65
5.5
Yes
Yes
No
25
$0.714
More Details
PCA9655EDWR2G
Last Shipments
Pb
A
H
P
SOIC−24 WB
3
260
REEL
1000
N
16
8 Slave ID Addresses
1.65
5.5
Yes
Yes
No
25
Price N/A
More Details
PCA9655EMTTXG
Last Shipments
Pb
A
H
P
QFN-24
1
260
REEL
3000
N
16
8 Slave ID Addresses
1.65
5.5
Yes
Yes
No
25
Price N/A
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