PCA9554BPWJ

Product Overview

Category: Integrated Circuit (IC)

Use: The PCA9554BPWJ is a 16-bit I2C-bus and SMBus I/O expander designed for various applications that require additional input/output (I/O) ports. It provides general-purpose parallel input/output expansion for most microcontroller families.

Characteristics: - 16 programmable I/O pins - I2C-bus/SMBus interface compatibility - Low standby current consumption - Noise filter on SDA/SCL inputs - Internal power-on reset - Polarity inversion register - Active-low interrupt output - 5V tolerant I/O ports - ESD protection exceeds 2000V HBM per JESD22-A114, 200V MM per JESD22-A115, and 1000V CDM per JESD22-C101

Package: TSSOP (Thin Shrink Small Outline Package)

Essence: The PCA9554BPWJ is an integrated circuit that expands the number of input/output ports available to microcontrollers. It allows for easy integration of additional I/O functionality in various applications.

Packaging/Quantity: The PCA9554BPWJ is typically sold in reels or tubes, with each reel/tube containing a specific quantity of ICs. The exact packaging and quantity may vary depending on the supplier.

Specifications

• Supply Voltage: 2.3V to 5.5V
• Input/Output Voltage: 0V to VDD
• Operating Temperature Range: -40°C to +85°C
• I2C-bus Frequency: Up to 400 kHz

Pin Configuration

The PCA9554BPWJ has a total of 24 pins. The pin configuration is as follows:

```

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| | | 1 2 3 | |_______________| | | | 4 5 6 | |_______________| | | | 7 8 9 | |_______________| | | | 10 11 12 | |_______________| | | | 13 14 15 | |_______________| | | | 16 17 18 | |_______________| | | | 19 20 21 | |_______________| | | | 22 23 24 | |_______________| ```

Functional Features

• I2C-bus/SMBus interface compatibility allows for easy integration with microcontrollers.
• Noise filter on SDA/SCL inputs helps to improve signal integrity in noisy environments.
• Polarity inversion register enables the inversion of input/output logic levels.
• Active-low interrupt output provides a convenient way to detect changes on the I/O ports.
• 5V tolerant I/O ports allow for direct interfacing with devices operating at higher voltages.
• ESD protection ensures robustness against electrostatic discharge.

Advantages and Disadvantages

Advantages: - Provides additional I/O ports for microcontroller-based systems. - Easy integration with microcontrollers through the I2C-bus/SMBus interface. - Low standby current consumption helps to minimize power consumption. - Noise filter improves signal integrity in noisy environments. - ESD protection ensures reliability in harsh operating conditions.

Disadvantages: - Limited to 16 programmable I/O pins, which may not be sufficient for certain applications requiring a larger number of I/O ports. - Requires I2C-bus/SMBus interface support from the microcontroller.

Working Principles

The PCA9554BPWJ operates by communicating with a microcontroller through the I2C-bus or SMBus interface. The microcontroller sends commands and data to the PCA9554BPWJ, which in turn controls the state of its 16 programmable I/O pins. The I/O pins can be configured as inputs or outputs, allowing for various applications that require additional I/O functionality.

Detailed Application Field Plans

The PCA9554BPWJ finds applications in a wide range of fields, including but not limited to: 1. Industrial automation: Control and monitoring of sensors, actuators, and other devices. 2. Home automation: Integration with smart home systems for controlling lights, appliances, and security systems. 3. Automotive electronics: Expansion of I/O ports for automotive control units and infotainment systems. 4. Internet of Things (IoT): Enabling connectivity and control of IoT devices through additional I/O ports. 5. Robotics: Integration with robotic systems for controlling motors, sensors, and peripheral devices.

Detailed