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See Technical Specifications

STMPE321QTR

Capacitive Touch Buttons 12-QFN (2.2x1.5)

Manufacturer:

STMicroelectronics, Inc
Mfr.Part #:

STMPE321QTR
Datasheet:

STMPE321QTR Datasheet (PDF)
Series:

S-Touch™
Programmable:

Not Verified
Type:

Buttons
Proximity Detection:

No
EDA/CAD Models:

Request Free CAD Models for STMPE321QTR

Email: [email protected]

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STMPE321QTR General Description

The STMPE321QTR is a GPIO port expander that allows additional input and output capabilities for microcontrollers and other devices with limited GPIO pins. It provides an easy and efficient way to expand the number of available GPIOs using the I2C communication protocol.

Key Features

3-Channel GPIO: The STMPE321QTR offers three GPIO channels, providing three additional I/O pins that can be configured as inputs or outputs.
I2C Interface: It communicates with the host controller or microcontroller through the I2C (Inter-Integrated Circuit) bus, a popular serial communication protocol.
Configuration Registers: The GPIOs can be individually configured as inputs or outputs using configuration registers, allowing flexible usage.
Interrupt Support: It supports interrupt functionality, allowing the host controller to receive notifications when the GPIO states change.
Low Power Consumption: It is designed to have low power consumption, making it suitable for power-sensitive applications.
ESD Protection: The GPIO pins typically have built-in Electrostatic Discharge (ESD) protection to prevent damage from electrostatic discharges.

Application

Portable Devices
Industrial Control
Human-Machine Interface (HMI)
IoT Devices
Consumer Electronics

Specifications

Category	Integrated Circuits (ICs)InterfaceSensor, Capacitive Touch	Series	S-Touch™
Programmable	Not Verified	Type	Buttons
Proximity Detection	No	Number of Inputs	3
LED Driver Channels	-	Interface	I²C
Resolution	7 b	Voltage - Supply	1.65V ~ 1.95V
Current - Supply	280µA	Operating Temperature	-40°C ~ 85°C
Mounting Type	Surface Mount	Base Product Number	STMPE321