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STMPE321QTR The STMicroelectronics STMPE321QTR is a 3-channel capacitive touchkey controller. It features an I2C interface and operates at voltages between 1.65V and 1.95V.
Mfr Part #:

STMPE321QTR

Available from 1 distributors
Mfr Name: STMicroelectronics
STMicroelectronics
The STMicroelectronics STMPE321QTR is a 3-channel capacitive touchkey controller. It features an I2C interface and operates at voltages between 1.65V and 1.95V.
✓ Total Stock: 200 pcs
$ Price Range: $2.23

STMPE321QTR Available from 1 distributor

✓ Authorised
✓ Non-Authorised
Distributor Stock Pricing MOQ PKG Lead Time Date Code On Order Quantity On Order Delivery
Speed Components Ltd ✓
Non-Authorised Inventory information
200 pcs
On Request
200 pcs On Request 1 On Request On Request 12+ On Request On Request
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STMPE321QTR Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Current
ESD Protection
Interface
Interrupt Output
Lead Spacing
Mounting Type
Number of Inputs
Operating Temperature
Operating Voltage
Proximity Detection
Resolution
Supplier Device Package
Tape & Reel
Type
Voltage
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STMPE321QTR Description

Short technical summary and product information.

The STMPE321QTR from STMicroelectronics is a 3-channel capacitive touchkey controller designed for applications requiring intuitive user interfaces. It offers up to 3 GPIOs and 3 capacitive touchkey inputs, configurable via an I2C interface.

 

This controller operates within a voltage range of 1.65V to 1.95V and includes features such as advanced data filtering (AFS) and environment tracking calibration (ETC) for optimal performance. It provides 8 kV HBM ESD protection and has a capacitance measurement resolution of 40 fF with 128 steps.

 

The device supports individually adjustable touch variance (TVR) settings and adjustable environmental variance (EVR) for precise calibration. In sleep mode, it consumes only 27 µA, making it suitable for low-power applications. The STMPE321QTR is available in a compact 12-QFN package with surface mount mounting type.

 

Key features include an interrupt output pin and the ability to sense capacitive keys even in low-power sleep mode. Its applications span mobile phones, smartphones, portable media players, and game consoles.

STMPE321QTR Quick Information

Product Type: Capacitive Touch Sensor IC
Canonical Name: STMPE321 3-channel capacitive touchkey controller
Subcategory: Sensor ICs

STMPE321QTR Compliance

RoHS Status: RoHS Compliant
Moisture Sensitivity Level (MSL): 1 Unlimited
REACH Status: REACH Unaffected

STMPE321QTR Estimated Pricing

Qty Low High
1+ $2.23 $2.23

Estimated market price range - modelled values for guidance only, not live distributor offers.

STMPE321QTR Features

  • 3-channel capacitive touchkey controller.
  • Operates from 1.65V to 1.95V.
  • Features I2C interface with 3.3V tolerance.
  • Includes 8 kV HBM ESD protection.
  • Available in 12-QFN package.

STMPE321QTR Applications

  • Ideal for mobile phones and smartphones.
  • Suitable for portable media players.
  • Used in game console designs.
  • Enables intuitive touch interfaces.

STMPE321QTR FAQs

7 frequently asked questions generated from this part’s specifications.
What is the operating voltage range for the STMPE321QTR?

The operating voltage range is 1.65V to 1.95V.

What package type is the STMPE321QTR available in?

The STMPE321QTR is available in a 12-QFN and a 12-UFQFN package.

What is the operating temperature range for this capacitive touch controller?

The operating temperature range is -40°C to 85°C.

Does the STMPE321QTR have an interrupt output pin?

Yes, the STMPE321QTR features an interrupt output pin.

What interface does the STMPE321QTR use?

The STMPE321QTR uses an I2C interface.

What is the ESD protection level for the STMPE321QTR?

The STMPE321QTR has 8 kV HBM ESD protection.

How many touch inputs does the STMPE321QTR support?

The STMPE321QTR supports up to 3 capacitive touchkey inputs.

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