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ID: 1208380
zł53.10
Tax included

zł43.17 tax excl.

Keyboard with 80 keys arranged in an 8 x 10 matrix, based on the TI TCA8418 IC and I2C communication. Integrated matrix scanning, hardware debouncing and a FIFO buffer reduce the number of required GPIO lines and simplify keyboard event handling in microcontroller-based projects. Soldered 333360

24h
Available
Available quantity: 2

Description

The keyboard uses the TI TCA8418 IC, which handles scanning of 80 keys arranged in an 8 x 10 matrix. This allows the microcontroller to communicate with the board via the I2C bus instead of using 18 separate GPIO lines for rows and columns. The TCA8418 provides hardware debouncing, a FIFO buffer storing up to 10 events, and support for a programmable two-key lock and unlock sequence. The fixed I2C address is 0x34, and the bus can operate at up to 1 MHz in Fast Mode Plus.

Two Qwiic connectors allow solderless connection and integration into a chain of I2C devices. The board operates from 1.65 V to 3.6 V, while standby current consumption is approximately 3 µA. The manufacturer provides Arduino and MicroPython libraries that decode FIFO events into key press and release events. The board measures 136 x 60 mm and includes two 3.2 mm diameter mounting holes designed for M3 screws.

Features

  • TI TCA8418 controller IC
  • 80 tactile switches
  • 8 x 10 keyboard matrix
  • I2C communication
  • Maximum I2C frequency: 1 MHz
  • Fixed I2C address: 0x34
  • 10-event FIFO buffer
  • 50 µs hardware debounce
  • Programmable two-key lock and unlock sequence
  • Operating voltage from 1.65 V to 3.6 V
  • Standby current consumption approximately 3 µA
  • 2000 V HBM ESD protection
  • 1000 V CDM ESD protection
  • 2 x Qwiic connector
  • Arduino and MicroPython libraries
  • 2 x M3 mounting hole
  • Mounting hole diameter: 3.2 mm
  • Dimensions: 136 x 60 mm
1208380

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