• Description

Adafruit Keypad to I2C Qwiic Encoder - TCA8418

Introducing the Adafruit Keypad to I2C Qwiic Encoder - TCA8418, a versatile I2C GPIO expander and keypad matrix driver. With 18 I/O pins, 10 columns, and 8 rows, it facilitates matrix button setups or GPIO input/output configurations. Equipped with a 10-element event queue and I2C compatibility, it's seamlessly integrated with microcontrollers or computers. Ideal for expanding GPIOs or driving keypad matrices, it includes pull-ups, matrix scanning, and interrupt outputs for efficient control. Supported by Arduino, CircuitPython/Python libraries, and a Linux Kernel driver module, it suits a wide range of applications. Housed in a convenient STEMMA QT form factor with built-in 3.3V regulator and level shifting, it's easily interfaced with 3V or 5V microcontrollers. Compatible with SparkFun Qwiic I2C connectors for hassle-free connections with other sensors and accessories.

Quick Spec

• Chip: TCA8418
• Supports 80 Buttons With Use of 18 GPIOs
• Supports QWERTY Keypad Operation Plus GPIO Expansion
• Low Standby (Idle) Current Consumption: 3 μA (not including breakout board regulator and LED)
• Supports 1-MHz Fast Mode Plus I2C Bus
• 10 Byte FIFO to Store 10 Key Presses and Releases
• Open-Drain Active-Low Interrupt Output
• Integrated Debounce Time of 50 μs
• Dimensions: 35.5 x 17.7 x 4.6mm

Wiring Diagram

Resources

• Product Page
• Product Wiki
• TCA8418 Datasheet
• Arduino Library

Shipping List

• 1 x Adafruit Keypad to I2C Qwiic Encoder - TCA8418

Adafruit Keypad to I2C Qwiic Encoder - TCA8418

• Brand: Adafruit
• Product Code: AF4918
• Weight: 0.004kg
• Product Status : Active

Stock

Warehouse	Stock Status	Location
Centurion	No Stock
Stellenbosch	New Product Arriving Soon
Bulk Location	No Stock

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• R132.00 (Inc Tax: R151.80)