PCA9536 - 具有配置寄存器的远程 4 位 I2C 和 SMBus I/O 扩展器

PCA9536是TI德州仪器公司的一款I2CIO扩展器产品，PCA9536是具有配置寄存器的远程 4 位 I2C 和 SMBus I/O 扩展器，本站介绍了PCA9536的封装应用图解、特点和优点、功能等，并给出了与PCA9536相关的TI元器件型号供参考。

PCA9536 - 具有配置寄存器的远程 4 位 I2C 和 SMBus I/O 扩展器 - I2CIO扩展器 - I2C - 德州仪器

产品描述

This 4-bit I/O expander for the two-line bidirectional bus (I2C) is designed for 2.3-V to 5.5-V VCC operation. It provides general-purpose remote I/O expansion for most microcontroller families via the I2C interface [serial clock (SCL), serial data (SDA)].

The PCA9536 features 4-bit Configuration (input or output selection), Input Port, Output Port, and Polarity Inversion (active high or active low) registers. At power on, the I/Os are configured as inputs with a weak pullup to VCC. However, the system master can enable the I/Os as either inputs or outputs by writing to the I/O configuration bits. If no signals are applied externally to the PCA9536, the voltage level is 1, or high, because of the internal pullup resistors. The data for each input or output is stored in the corresponding Input Port or Output Port register. The polarity of the Input Port register can be inverted with the Polarity Inversion register. All registers can be read by the system master.

The system master can reset the PCA9536 in the event of a timeout or other improper operation by utilizing the power-on reset feature, which puts the registers in their default state and initializes the I2C/SMBus state machine.

The device's outputs (latched) have high-current drive capability for directly driving LEDs. It has low current consumption.

产品特性

Available in the Texas Instruments NanoFree Package
Low Standby Current Consumption of 1μAMax
I2C to Parallel Port Expander
Operating Power-Supply Voltage Range of 2.3V to 5.5 V
5-V Tolerant I/O Ports
400-kHz Fast I2C Bus
Input/Output Configuration Register
Polarity Inversion Register
Internal Power-On Reset
No Glitch on Power Up
Power-Up With All Channels Configured as Inputs
Noise Filter on SCL/SDA Inputs
Latched Outputs With High-Current Drive Maximum Capability for Directly Driving LEDs
Latch-Up Performance Exceeds 100 mA Per JESD 78, Class II
ESD Protection Exceeds JESD 22
- 2000-V Human-Body Model (A114-A)
- 200-V Machine Model (A115-A)
- 1000-V Charged-Device Model (C101)

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