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Name: PCA9554APW,118
Brand: NXP USA Inc.
SKU: PCA9554APW,118
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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NXP USA Inc. PCA9554APW,118

Part No.:: PCA9554APW,118

Manufacturer:: NXP USA Inc.

Package:: 16-TSSOP (0.173, 4.40mm Width)

Datasheet:: PCA9554APW,118.pdf

Description:: IC I/O EXPANDER I2C 8B 16TSSOP

In Stock:: 3041

Quantity:: Add To Cart

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PCA9554APW,118 Specifications

Package/Case:
16-TSSOP (0.173, 4.40mm Width)
Packaging:
Tape & Reel (TR),Cut Tape (CT),Digi-Reel®
Series:
-
ProductStatus:
Active
NumberofI/O:
8
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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PCA9554APW,118 information

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PCA9554APW,118 Typical application Circuitry

PCA9554APW,118

The PCA9554APW,118 is an 8-bit I²C-bus and SMBus I/O expander with an interrupt function. It's designed to provide additional input/output (I/O) capability to a microcontroller or processor, especially useful in systems with limited I/O pin availability.

Features of PCA9554APW,118

1. I/O Expansion: The PCA9554APW,118 enhances the system by adding 8 I/O ports, which can be individually set as inputs or outputs.

2. Interrupt Output: Features an interrupt output that signals the microcontroller when input changes occur.

3. Communication Protocol: Comes with an I²C-bus interface, facilitating easy integration with various microcontrollers or processors.

4. Polarity Inversion: Input polarity inversion register is available to adapt the polarity of the input port data if necessary.

Application Scenario: Interactive Display System

In an interactive display system, the PCA9554APW,118 can be utilized to manage various input devices like buttons and switches, as well as indicators like LEDs, thereby expanding the I/O capability of the display controller. Here's a detailed guide for connecting this in an interactive display system:

Circuit Connection Details

1. Power Supply (VDD - Pin 16, VSS - Pin 8):

- Powering the Chip: Connect a stable power source to VDD (Pin 16) to power the PCA9554APW,118. Ground VSS (Pin 8) to complete the power circuit.

2. I/O Ports (P0-P7 - Pins 1-7, Pin 9):

- Connecting Input Devices and Indicators: Wire the buttons, switches, and LEDs to the I/O ports (P0-P7). The specific configuration will depend on the design of the interactive display system.

3. I²C Bus Communication (SDA - Pin 15, SCL - Pin 14):

- Display Controller Communication: Attach SDA (Pin 15) and SCL (Pin 14) to the I²C data and clock lines on the display controller. This setup facilitates communication between the PCA9554APW,118 and the display controller.

4. Interrupt Configuration (INT - Pin 13):

- Notification of Input Changes: Connect INT (Pin 13) to an interrupt pin on the display controller. This enables the PCA9554APW,118 to alert the controller when any of the input states change.

5. Address Pins (A0-A2 - Pins 10-12):

- Setting I²C Address: Configure A0, A1, and A2 (Pins 10-12) for the I²C address. This is critical when multiple devices are connected to the same I²C bus.

Design Considerations

When designing a circuit with the PCA9554APW,118, consider the following:

1. I/O Pin Utilization: Ensure that the number of I/O pins needed for the input devices and indicators does not exceed the 8-bit capacity of the PCA9554APW,118.

2. I²C Bus Configuration: Correctly address the PCA9554APW,118, especially when there are multiple I/O expanders or devices on the same I²C bus.

3. Stable Power Source: Provide a stable and noise-free power supply to ensure consistent performance of the I/O expander.

4. Interrupt Management: Implement an efficient interrupt handling strategy to ensure that the display controller can respond swiftly to state changes signaled by the PCA9554APW,118.

By meticulously addressing these points and exploiting the functionalities and pin configurations of the PCA9554APW,118, it's possible to effectively integrate this I/O expander into sophisticated applications like an interactive display system. The PCA9554APW,118, with its I/O expansion and interrupt signaling capabilities, is an excellent choice for augmenting the I/O capacity of a central display controller in complex systems.

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6. What is the process for return or replacement of PCA9554APW,118?

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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 PCA9554APW,118.

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

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