What is the Additional Feature ?

Name: MC33972ATEWR2
Brand: NXP USA Inc.
SKU: MC33972ATEWR2
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. MC33972ATEWR2

Part No.:: MC33972ATEWR2

Manufacturer:: NXP USA Inc.

Package:: 32-BSSOP (0.295, 7.50mm Width)

Datasheet:: MC33972ATEWR2.pdf

Description:: IC INTERFACE SPECIALIZED 32SOIC

In Stock:: 2658

Quantity:: Add To Cart

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MC33972ATEWR2 Specifications

Package/Case:
32-BSSOP (0.295, 7.50mm Width)
Packaging:
Tape & Reel (TR),Cut Tape (CT),Digi-Reel®
Series:
-
ProductStatus:
Active
Applications:
Switch Monitoring
Interface:
SPI Serial
Voltage-Supply:
3.1V ~ 5.25V

MC33972ATEWR2 this integrated circuit is available in factory sealed anti static packs. at icwhale.com. Please read product page below detail information. including MC33972ATEWR2 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 MC33972ATEWR2 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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MC33972ATEWR2 information

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MC33972ATEWR2 Typical application Circuitry

MC33972ATEWR2

The MC33972ATEWR2 is a multiple switch detection interface (MDI) integrated circuit designed for automotive applications, with the capability to detect the closing and opening of up to 22 switches. This device utilizes an SPI interface for communication with microcontrollers and has numerous features that allow for flexible switch configurations.Here's a detailed guide to connecting the MC33972ATEWR2 in a typical application:

1. Power Supply: VDD (Pin 24) should be connected to a +5.5 V to +26.5 V power source, and VSS (Pin 1) should be connected to ground. It is advisable to place a bypass capacitor near the power supply pins to improve noise immunity.

2. SPI Interface: The SPI interface comprises four pins - SILK (Pin 9), CS (Pin 10), SI (Pin 11), and SO (Pin 8). Connect SCLK, CS, and SI to the corresponding SPI pins of your microcontroller, and SO to the MISS (Master In, Slave Out) pin of the microcontroller.

3. Switch Inputs: The MC33972ATEWR2 features 22 switch input pins (SW0 to SW21). Connect each switch between the respective switch input pin and ground. When the switches are turned off, the internal pull-up resistors keep the pins high.

4. Switch Configuration: Use the SPI interface to configure each switch input as a wetting current switch, ground switch, or analog input. You can also set debounce times and other parameters for each switch.

5. Reset: Connect the RST pin (Pin 7) to a microcontroller GPO pin to perform a reset operation when required.

6. Interrupt: Connect the INT pin (Pin 6) to a microcontroller interrupt input pin. This allows the microcontroller to respond to any change in the switch states.

7. Voltage Reference: The MC33972ATEWR2 features an internal voltage reference (REF) at Pin 23, which can be used for external circuitry.

8. External Components: Connect a resistor (BIAS) from Pin 5 to ground to set the internal current sources. Attach a capacitor (CPU) between Pin 22 and ground for the wake-up timing.

9. Wake-up: The WAKE pin (Pin 21) can be connected to an external circuit to control the wake-up functionality.

10. Ground and Thermal: Connect the exposed pad (Pin 25) to the ground to provide thermal relief and enhance grounding.

In conclusion, the MC33972ATEWR2 offers a versatile solution for multiple switch detection in automotive applications. Following the connection parameters outlined above provides best performance and dependability.

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6. What is the process for return or replacement of MC33972ATEWR2?

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 MC33972ATEWR2 we delivered, we will accept the replacement or return of the MC33972ATEWR2 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 MC33972ATEWR2.

(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