What is the Additional Feature ?

Name: PCA9535PW
Brand: Texas Instruments
SKU: PCA9535PW
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Any Feature, including a modified Existing Feature, that is not an Existing Feature.

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Texas Instruments PCA9535PW

Part No.:: PCA9535PW

Manufacturer:: Texas Instruments

Package:: 24-TSSOP (0.173, 4.40mm Width)

Datasheet:: PCA9535PW.pdf

Description:: IC I/O EXPANDER I2C 16B 24TSSOP

In Stock:: 3120

Quantity:: Add To Cart

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PCA9535PW Specifications

Package/Case:
24-TSSOP (0.173, 4.40mm Width)
Packaging:
Tube
Series:
-
ProductStatus:
Obsolete
NumberofI/O:
16
Interface:
I²C, SMBus
InterruptOutput:
Yes
Features:
POR
OutputType:
Push-Pull
Current-OutputSource/Sink:
10mA, 25mA
ClockFrequency:
400 kHz
Voltage-Supply:
2.3V ~ 5.5V
OperatingTemperature:
-40°C ~ 85°C
MountingType:
Surface Mount

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PCA9535PW information

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PCA9535PW Typical application Circuitry

PCA9535PW

The PCA9535PW is a 16-bit I2C-bus and SMBus I/O expander. It is designed to provide additional input/output (I/O) ports to a microcontroller or processor, which is especially useful in systems with limited GPIO pins. This chip facilitates the expansion of I/O capabilities using the I2C bus for communication.

PCA9535PW Application Scenarios:

1. I/O Expansion in Microcontroller-Based Systems: Widely used in embedded systems, such as home automation, industrial controls, or IoT devices, where additional GPIOs are needed for interfacing with sensors, LEDs, or other peripherals.

2. Control Functions in Complex Electronics: Utilized in complex electronic systems like server motherboards, networking equipment, and consumer electronics for managing multiple control functionalities.

PCA9535PW Key Features and Parameters:

1. 16-Bit I/O Ports: Provides sixteen additional I/O ports, configurable either as input or output.

2. I2C-Bus Compatibility: Supports I2C-bus and SMBus interfaces, ensuring easy integration into existing systems.

3. Low Power Consumption: Suitable for energy-efficient and battery-powered applications.

4. Interrupt Output: Features an interrupt output which flags changes on the input port, enhancing responsiveness in interactive systems.

Circuit Connection Example: Expanding GPIOs in an IoT Device

Overview: Implementing PCA9535PW to increase the number of GPIOs available to a microcontroller in an Internet of Things (IoT) device.

1. Connecting to Power Supply:

- VDD (pin 24) should be linked to the microcontroller's power supply, typically within a 2.3V to 5.5V range.

2. Grounding the Device:

- GND (pin 12) needs to be connected to the system's ground.

3. I2C Bus Integration:

- SDA (pin 23) and SCL (pin 22) are to be connected to the I2C data and clock lines of the microcontroller.

4. Setting Up I/O Ports:

- P0.0 to P0.7 (pins 1-7) and P1.0 to P1.7 (pins 13-20) serve as the I/O ports, which can be programmed as inputs or outputs as required.

5. Configuring the I2C Address:

- A0, A1, and A2 (pins 21, 20, and 19, respectively) must be set to establish the specific I2C address for the expander, connecting them to VCC or GND.

6. Utilizing Interrupts:

- INT (pin 8) can be connected to an interrupt pin on the microcontroller to monitor input changes.

Design Considerations:

1. Voltage Compatibility: Ensure that VDD is compatible with the logic level voltage of the microcontroller.

2. I2C Address Configuration: Properly set A0, A1, and A2 to avoid I2C bus address conflicts.

3. Pull-Up Resistors on I2C Lines: Include appropriate pull-up resistors on SDA and SCL for stable communication.

4. I/O Pin Configuration: Program P0.0 to P1.7 as input or output based on the specific IoT application needs.

5. Interrupt Management: Utilize the INT pin effectively to enhance system responsiveness to input changes.

In summary, the PCA9535PW is a versatile solution for expanding the I/O capabilities of microcontroller systems, particularly beneficial in IoT applications and complex electronic systems. Its 16-bit I/O expansion, low power consumption, and I2C bus compatibility make it a valuable component in a wide range of applications where additional GPIOs are required.

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6. What is the process for return or replacement of PCA9535PW?

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(1)Such as a deficiency in quantity, delivery of wrong items, and apparent external defects (breakage and rust, etc.), and we acknowledge such problems.

(2)We are informed of the defect described above within 90 days after the delivery of PCA9535PW.

(3)The PartNo is unused and only in the original unpacked packaging.

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