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maXTouch® Technology Class B-Certified Touch Controllers

Class B-Certified Touch Controllers for Home Appliances

We offer IEC/UL 60730 Class B specification-certified touch controllers that enable system shut-off through an intuitive soft button on a touchscreen, removing the need for an external safety-certified stop or cancel button and associated microcontroller (MCU). These controllers also allow an appliance to detect a touchscreen or appliance failure and shut down automatically through a variety of self-testing capabilities. 

As the number of touch-enabled home appliances continues to increase, the HA1 family of maXTouch® touchscreen controllers shifts the required safety functionality to a simplified, single touchscreen interface, helping OEMs reduce costs and improve time to market. 

HA1 Family of Touch Controllers

As shown in the interactive diagram, the HA1 touch controller family is an integral part of our functional safety system solutions for home appliances.

Featured Products

ATMXT112UD-HA1

  • Temperature range: −40°C to 85°C
  • Typical screen size: 4.5 inches
  • Max nodes (X*Y): 112
  • Channels: 22
  • Package: 7 mm × 7 mm, QFN56
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ATMXT228UD-HA1

  • Temperature range: −40°C to 85°C
  • Typical screen size: 5.8 inches
  • Max nodes (X*Y): 228
  • Channels: 31
  • Package: 7 mm × 7 mm, QFN56
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ATMXT336UD-HA1

  • Temperature range: −40°C to 85°C
  • Typical screen size: 7.1 inches
  • Max nodes (X*Y): 336
  • Channels: 38
  • Package: 7 mm × 7 mm, QFN56
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ATMXT448UD-HA1

  • Temperature range: −40°C to 105°C
  • Typical screen size: 8.3 inches
  • Max nodes (X*Y): 448
  • Channels: 44
  • Package: 6 mm × 6 mm, UFBGA88
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ATMXT640UD-HA1

  • Temperature range: −40°C to 105°C
  • Typical screen size: 9.7 inches
  • Max nodes (X*Y): 640
  • Channels: 52
  • Package: 6 mm × 6 mm, UFBGA88
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Features of Our Class B-Enabled Touch Controllers

We offer five touch controllers that have 112 nodes (approx 4.5 inches) to 640 nodes (up to 10 inches). Our IEC/UL 60730 Class B-certified touch controllers:

  • Support IEC 61000-4-6, 10 Vrms, Class A (normal touch operation) conducted noise immunity
  • Operate in a temperature range of −40°C to +105°C
  • Support multi-finger, thick-glove (5 mm) touch
  • Support thick lenses with up to 10 mm glass
  • Contain adaptive sensing (self- and mutual-capacitance)
  • Contain I2C (3.4 MHz) slave interfaces (with I2C CRC and sequence number)
  • Contain a secondary SPI (8 MHz) channel (MXT448UD/MXT640UD-HA1 only)
  • Come as comprehensive evaluation kits that include touch sensors

Design Resources

Part Number: Quantity: Price per Unit (in USD): Total Amt:
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EV52F23A
ATEVK-MXT640UD-A

The device can be connected through a flexible printed circuit (FPC) to an Indium Tin Oxide (ITO) glass touchscreen (75533). A set of self-adhesive feet have been supplied with the kit to allow for the touchscreen assembly to be used on the desk/bench. Alternatively, the touchscreen assembly may be mounted to a suitable display for evaluation of on-screen performance.

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EV43U30A
ATMXT640UD-DEV-PCB

This PCB (ATMXT640UD-DEV-PCB) is for the evaluation and development of Microchip maXTouch applications using the ATMXT640UD Touchscreen Sensor IC.

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ATEVK-MXT336U-A
ATEVK-MXT336U-A

This kit (ATEVK-MXT336U-A) is for the evaluation and development of Microchip maXTouch applications using the ATMXT336U Touchscreen Sensor IC.

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ATMXT336U-DEV-PCB
ATMXT336U-DEV-PCB
The PCB includes an integrated USB bridge to allow simple connection into the customers application for evaluation of the ATMXT336U Touchscreen Sensor IC.
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