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参数资料
| 型号： | PCA9539RPW,112 |
| 厂商： | NXP Semiconductors |
| 文件页数： | 1/37页 |
| 文件大小： | 0K |
| 描述： | IC I/O EXPANDER I2C 16B 24TSSOP |
| 标准包装： | 1,575 |
| 接口： | I²C，SM 总线 |
| 输入/输出数： | 16 |
| 中断输出： | 是 |
| 频率 - 时钟： | 400kHz |
| 电源电压： | 2.3 V ~ 5.5 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 24-TSSOP（0.173"，4.40mm 宽） |
| 供应商设备封装： | 24-TSSOP |
| 包装： | 管件 |
| 包括： | POR |
| 其它名称： | 935286605112 PCA9539RPW PCA9539RPW-ND |
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1.
General description
The PCA9539; PCA9539R is a 24-pin CMOS device that provides 16 bits of General
Purpose parallel Input/Output (GPIO) expansion with interrupt and reset for
I2C-bus/SMBus applications and was developed to enhance the NXP Semiconductors
family of I2C-bus I/O expanders. I/O expanders provide a simple solution when additional
I/O is needed for ACPI power switches, sensors, push buttons, LEDs, fans, etc.
The PCA9539; PCA9539R consists of two 8-bit configuration (input or output selection),
input, output and polarity inversion (active HIGH or active LOW operation) registers. The
system master can enable the I/Os as either inputs or outputs by writing to the I/O
configuration bits. The data for each input or output is kept in the corresponding Input or
Output register. The polarity of the read register can be inverted with the Polarity inversion
register. All registers can be read by the system master.
The PCA9539; PCA9539R is identical to the PCA9555 except for the removal of the
internal I/O pull-up resistor which greatly reduces power consumption when the I/Os are
held LOW, replacement of A2 with RESET and a different address range.
The PCA9539; PCA9539R open-drain interrupt output is activated when any input state
differs from its corresponding input port register state and is used to indicate to the system
master that an input state has changed.
The power-on reset sets the registers to their default values and initializes the device state
machine. In the PCA9539, the RESET pin causes the same reset/default I/O input
configuration to occur without de-powering the device, holding the registers and I2C-bus
state machine in their default state until the RESET input is once again HIGH. This input
requires a pull-up to VDD. In the PCA9539R however, only the device state machine is
initialized by the RESET pin and the internal general-purpose registers remain
unchanged. Using the PCA9539R RESET pin will only reset the I2C-bus interface should
it be stuck LOW to regain access to the I2C-bus. This allows the I/O pins to retain their last
configured state so that they can keep any lines in their previously defined state and not
cause system errors while the I2C-bus is being restored.
Two hardware pins (A0, A1) vary the fixed I2C-bus address and allow up to four devices to
share the same I2C-bus/SMBus.
2.
Features and benefits
16-bit I2C-bus GPIO with interrupt and reset
Operating power supply voltage range of 2.3 V to 5.5 V
(5.0 V
10 % for PCA9539PW/Q900 AEC-Q100 compliant devices)
5 V tolerant I/Os
PCA9539; PCA9539R
16-bit I2C-bus and SMBus low power I/O port with interrupt
and reset
Rev. 6 — 6 February 2013
Product data sheet
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相关代理商/技术参数 |
参数描述 |
|---|---|
| PCA9540 | 制造商:PHILIPS 制造商全称:NXP Semiconductors 功能描述:2-channel I2C multiplexer |
| PCA9540B | 制造商:PHILIPS 制造商全称:NXP Semiconductors 功能描述:2-channel I2C-bus multiplexer |
| PCA9540BD | 功能描述:编码器、解码器、复用器和解复用器 I2C MUX 2CH BI-DIR RoHS:否 制造商:Micrel 产品:Multiplexers 逻辑系列:CMOS 位数: 线路数量（输入/输出）:2 / 12 传播延迟时间:350 ps, 400 ps 电源电压-最大:2.625 V, 3.6 V 电源电压-最小:2.375 V, 3 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:QFN-44 封装:Tray |
| PCA9540BD,112 | 功能描述:编码器、解码器、复用器和解复用器 I2C MUX 2CH BI-DIR RoHS:否 制造商:Micrel 产品:Multiplexers 逻辑系列:CMOS 位数: 线路数量（输入/输出）:2 / 12 传播延迟时间:350 ps, 400 ps 电源电压-最大:2.625 V, 3.6 V 电源电压-最小:2.375 V, 3 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:QFN-44 封装:Tray |
| PCA9540BD,118 | 功能描述:编码器、解码器、复用器和解复用器 2-CHANNEL I2C MULTIPLEXER RoHS:否 制造商:Micrel 产品:Multiplexers 逻辑系列:CMOS 位数: 线路数量（输入/输出）:2 / 12 传播延迟时间:350 ps, 400 ps 电源电压-最大:2.625 V, 3.6 V 电源电压-最小:2.375 V, 3 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:QFN-44 封装:Tray |
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