MIKROE-2474 TouchKey 2 click board™

MikroElektronika presents an add-on board featuring the Microchip ATtiny817 MCU and QTouch® controller

Image of Mikroelektronika's MIKROE-2474 TouchKey 2 click board™The MIKROE-2474 TouchKey 2 click from MikroElektronika has four capacitive touch pads powered by Microchip's ATtiny817 microcontroller. This board also has an integrated Microchip QTouch controller. The click is designed to run on a 3.3 V power supply. The four LEDs onboard the click indicate when the key (pad) is pressed.  TouchKey 2 click communicates with the target microcontroller over UART interface or via serial peripheral interface (SPI). The TouchKey 2 click can be used in several different rugged environments and will be resistant to moisture and water droplets that fall on it. The plastic overlay on the TouchKey 2 click protects the board from moisture. Thanks to this feature the electronic components are safe. The ATtiny817 has a driven shield for improved moisture and noise handling performance. Capacitive buttons can be toggled even when placed under a layer of glass or paper. There are four LEDs for four touch keys. If key A is pressed LED_A is ON, etc. In addition, there is UART communication between ATtiny817 and main MCU.

Microchip's ATtiny817 is a microcontroller that uses an 8-bit AVR® processor with hardware multiplier, running at up to 20 MHz and with up to 8 KB Flash, 512 bytes of SRAM, and 128 bytes of EEPROM. ATtiny817 uses the latest technologies from Microchip with a flexible and low power architecture including Event System and Sleep-Walking, accurate analog features, and advanced peripherals. Capacitive touch interfaces with proximity sensing and driven shield are supported with the integrated QTouch peripheral touch controller. The module supports wake-up on touch from power-save sleep mode.

TouchKey 2 Example Code
TouchKey 2 Schematic v100

Specifications
  • Type: capacitive
  • Applications: a replacement for mechanical buttons
  • On-board modules: ATtiny817 from Microchip
  • Key features: four capacitive touch pads, 3.3 V power supply, protective plastic overlay
  • Key benefits: high moisture tolerance
  • Interface: GPIO, SPI, UART
  • Input voltage: 3.3 V
  • Compatibility: mikroBUS™
  • Click board size: L (57.15 mm x 25.4 mm)

MIKROE-2474 TouchKey 2 click board

ImageManufacturer Part NumberDescriptionPlatformTypeFunctionAvailable QuantityView Details
TOUCHKEY 2 CLICKMIKROE-2474TOUCHKEY 2 CLICKmikroBUS™ Click™SensorTouch3 - ImmediateView Details

Associated Microchip MCUs

ImageManufacturer Part NumberDescriptionCore ProcessorCore SizeSpeedAvailable QuantityView Details
IC MCU 8BIT 8KB FLASH 24QFNATTINY817-MFRIC MCU 8BIT 8KB FLASH 24QFNAVR8-Bit20MHz5023 - ImmediateView Details

Microchip Curiosity Boards

ImageManufacturer Part NumberDescriptionPlatformUtilized IC / PartAvailable QuantityView Details
CURIOSITY HIGH PIN CNT PIC MICRODM164136CURIOSITY HIGH PIN CNT PIC MICROCuriosity High Pin CountPIC Micro® MCU82 - ImmediateView Details
CURIOSITY 8/14/20 PIN PIC EVALDM164137CURIOSITY 8/14/20 PIN PIC EVALCuriosity8-pin, 14-pin, or 20-pin PICmicro Microcontrollers165 - ImmediateView Details
PIC24F CURIOSITY EVAL BRDDM240004PIC24F CURIOSITY EVAL BRDPIC24F Curiosity BoardPIC24F40 - ImmediateView Details
PIC24FJ256GA7 CURIOSITY EVAL BRDDM240016PIC24FJ256GA7 CURIOSITY EVAL BRDPIC24FJ256GA7 CuriosityPIC24FJ256GA70576 - ImmediateView Details
PIC32MM CURIOSITY 0064GPL036DM320101PIC32MM CURIOSITY 0064GPL036PIC32MM CuriosityPIC32MM0064GPL03636 - ImmediateView Details
PIC32MX470 CURIOSITY EVAL BRDDM320103PIC32MX470 CURIOSITY EVAL BRDPIC32MX470 CuriosityPIC32MX470F512H35 - ImmediateView Details
PIC32MZ EF CURIOSITY MRF24WN0MADM320104PIC32MZ EF CURIOSITY MRF24WN0MAPIC32MZ EF CuriosityMRF24WN0MA, PIC32MZ2048EFM10027 - ImmediateView Details
PIC32MM USB CURIOSITY EVAL BRDDM320107PIC32MM USB CURIOSITY EVAL BRDPIC32MM USB CuriosityPIC32MM0256GPM06415 - ImmediateView Details
Published: 2017-08-10