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Texas Instruments PCA9554APWRG4
- Part No.:
- PCA9554APWRG4
- Manufacturer:
- Texas Instruments
- Package:
- 16-TSSOP (0.173, 4.40mm Width)
- Datasheet:
-
PCA9554APWRG4.pdf
- Description:
- IC I/O EXPANDER I2C 8B 16TSSOP
- In Stock:
- 3249
- Quantity:
- Add To Cart
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PCA9554APWRG4 Specifications
- Package/Case:16-TSSOP (0.173, 4.40mm Width)
- Packaging:Tape & Reel (TR)
- Series:-
- ProductStatus:Discontinued at Mosen
- 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
PCA9554APWRG4 this integrated circuit is available in factory sealed anti static packs. at icwhale.com. Please read product page below detail information. including PCA9554APWRG4 price, data-sheet, in-stock availability, technical difficulties. Also. Quickly Enter the access of compare listing to find out replaceable electronic parts. If you want to retrieve comprehensive data for PCA9554APWRG4 to optimize the supply chain (including cross references, life-cycle, parametric, counterfeit risk, obsolescence managements forecasts), please contact to our Tech-supports team.
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PCA9554APWRG4 information
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PCA9554APWRG4 Typical application Circuitry
The PCA9554APWRG4 is an 8-bit I²C and SMBus I/O expander with an interrupt function, designed to provide additional input/output (I/O) capability to a microcontroller or processor, especially in applications where pin count is limited.
Features of PCA9554APWRG4
1. I/O Expansion: The PCA9554APWRG4 adds 8 I/O ports, which can be individually configured as input or output.
2. Interrupt Output: Features an interrupt output that notifies the microcontroller when input changes occur.
3. Communication Interface: Utilizes an I²C-bus interface, facilitating easy integration with a wide variety of microcontrollers or processors.
4. Configurable Polarity: Includes input polarity inversion to adapt the polarity of input port data.
Application Scenario: Environmental Monitoring System
In an environmental monitoring system, the PCA9554APWRG4 can be utilized to manage various sensors and indicators, such as temperature, humidity, and air quality sensors, expanding the I/O capability of the main control unit. Here's a detailed guide for connecting this in an environmental monitoring setup:
Circuit Connection Details
1. Power Supply (VDD - Pin 16, VSS - Pin 8):
- Device Powering: Connect a stable power source to VDD (Pin 16) to power the PCA9554APWRG4. Ground VSS (Pin 8) to establish a common ground.
2. I/O Ports (P0-P7 - Pins 1-7, Pin 9):
- Sensor and Indicator Wiring: Connect the environmental sensors and indicators to the I/O ports (P0-P7). Configure these ports based on the specific requirements of the monitoring system.
3. I²C Bus Communication (SDA - Pin 15, SCL - Pin 14):
- Microcontroller Data Exchange: Link SDA (Pin 15) and SCL (Pin 14) to the I²C data and clock lines on the microcontroller. This setup facilitates communication between the PCA9554APWRG4 and the microcontroller.
4. Interrupt Configuration (INT - Pin 13):
- Status Change Notification: Connect INT (Pin 13) to an interrupt pin on the microcontroller. This enables the PCA9554APWRG4 to alert the microcontroller when any input state changes.
5. Address Pins (A0-A2 - Pins 10-12):
- I²C Address Customization: Set A0, A1, and A2 (Pins 10-12) to determine the I²C address. This is crucial when multiple devices are connected to the same I²C bus.
Design Considerations
When designing a circuit with the PCA9554APWRG4, consider the following:
1. I/O Pin Capacity: Confirm that the number of I/O pins needed for the sensors and indicators does not exceed the 8-bit limit of the PCA9554APWRG4.
2. I²C Bus Configuration: Correctly address the PCA9554APWRG4, especially when multiple I/O expanders or devices are 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 Handling: Effectively manage the interrupt signal to ensure the microcontroller can promptly respond to changes in the input states.
By thoughtfully addressing these points and leveraging the functionalities and pin configurations of the PCA9554APWRG4, one can effectively integrate this I/O expander into sophisticated applications like an environmental monitoring system. The PCA9554APWRG4, with its I/O expansion and interrupt signaling capabilities, is an excellent choice for enhancing the I/O capabilities of a central microcontroller in complex systems.
PCA9554APWRG4 FAQ
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3. Are the PCA9554APWRG4 price and inventory displayed accurate?
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6. What is the process for return or replacement of PCA9554APWRG4?
All goods will implement Pre-Shipment Inspection (PSI), selected at random from all batches of your order to do a systematic inspection before arranging the shipment. If there is something wrong with the PCA9554APWRG4 we delivered, we will accept the replacement or return of the PCA9554APWRG4 only when all of the below conditions are fulfilled:
(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 PCA9554APWRG4.
(3)The PartNo is unused and only in the original unpacked packaging.
Two processes to return the products:
(1)Inform us within 90 days
(2)Obtain Requesting Return Authorizations
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