PCA9675PW,118

Product Overview

Category

PCA9675PW,118 belongs to the category of integrated circuits (ICs).

Use

This product is commonly used for general-purpose parallel input/output (I/O) expansion applications.

Characteristics

• The PCA9675PW,118 is a 16-bit I/O expander with an I2C-bus interface.
• It provides 16 I/O pins that can be individually configured as inputs or outputs.
• The device operates from a supply voltage range of 2.3V to 5.5V.
• It has built-in noise filtering and glitch suppression mechanisms.
• The PCA9675PW,118 supports hot insertion and removal of devices without causing bus contention or data corruption.

Package

The PCA9675PW,118 is available in a TSSOP package.

Essence

The essence of PCA9675PW,118 lies in its ability to expand the number of I/O pins available on a microcontroller or other digital devices.

Packaging/Quantity

The PCA9675PW,118 is typically sold in reels containing 2500 units per reel.

Specifications

• Supply Voltage Range: 2.3V to 5.5V
• Number of I/O Pins: 16
• Interface: I2C-bus
• Operating Temperature Range: -40°C to +85°C
• Package Type: TSSOP

Detailed Pin Configuration

The PCA9675PW,118 has a total of 24 pins. The pin configuration is as follows:

1. SDA - Serial Data Input/Output
2. SCL - Serial Clock Input
3. A0 - Address Bit 0
4. A1 - Address Bit 1
5. A2 - Address Bit 2
6. GND - Ground
7. P00 - I/O Pin 0
8. P01 - I/O Pin 1
9. P02 - I/O Pin 2
10. P03 - I/O Pin 3
11. P04 - I/O Pin 4
12. P05 - I/O Pin 5
13. P06 - I/O Pin 6
14. P07 - I/O Pin 7
15. P10 - I/O Pin 8
16. P11 - I/O Pin 9
17. P12 - I/O Pin 10
18. P13 - I/O Pin 11
19. P14 - I/O Pin 12
20. P15 - I/O Pin 13
21. P16 - I/O Pin 14
22. P17 - I/O Pin 15
23. VDD - Supply Voltage
24. NC - No Connection

Functional Features

• Individual pin configuration: Each of the 16 I/O pins can be independently configured as an input or output.
• Interrupt capability: The PCA9675PW,118 supports interrupt generation on selected pins to notify the microcontroller of changes in input states.
• Programmable I/O logic levels: The device allows for programmable logic levels, enabling compatibility with different voltage systems.
• Noise filtering and glitch suppression: Built-in mechanisms ensure reliable operation in noisy environments by filtering out unwanted noise and suppressing glitches.

Advantages and Disadvantages

Advantages

• Provides additional I/O pins for devices with limited GPIO resources.
• Supports hot insertion and removal without bus contention or data corruption.
• Offers noise filtering and glitch suppression for reliable operation in challenging environments.
• Can be easily controlled using the I2C-bus interface.

Disadvantages

• Limited to 16 I/O pins, which may not be sufficient for applications requiring a large number of I/Os.
• Requires additional I2C-bus communication overhead.

Working Principles

The PCA9675PW,118 operates as an I/O expander by communicating with a microcontroller or other digital devices through the I2C-bus interface. It allows the microcontroller to control and monitor the state of the 16 I/O pins individually. The device can be configured as either an input or output, providing flexibility in connecting external components or reading signals from sensors. The I2C-bus interface facilitates easy integration into existing systems.

Detailed Application Field Plans

The PCA9675PW,118 finds applications in various fields, including but not limited to:

1. Industrial automation: Used for expanding I/O capabilities in control systems, PLCs, and industrial machinery.
2. Consumer electronics: Enables additional I/Os in devices such as smart home appliances, gaming consoles, and audio/video equipment.
3. Automotive: Utilized for I/O expansion in automotive control units, infotainment systems, and lighting modules.
4. Internet of Things (IoT): Integrated into IoT devices to increase the number of available I/Os for sensor inputs and act