Its internal LED driver supports 4 segments with current output control which are able to drive LED displays directly without requiring additional external current-limiting resistors or transistors. With fewer components and lower cost, the device will find excellent use in small appliances which require touch key functions and LED touch panels.

The device has an internal 4-channel 12-bit A/D converter for the temperature or other voltage measurement. By including both I2C and SPI interfaces, the device can be used as a master MCU device or work together with other master MCUs to implement touch key detection or temperature/voltage measurement.

As is the case with other Holtek 8-bit MCUs, this new device has a full array of protection features including high noise immunity, Watchdog Timer and Low Voltage Reset to provide maximum protection when operating in electrically hostile environments.

During product development, by also providing an e-Link coupled with an OCDS EV device as well as Holtek’s new touch development platform, users have all the tools to hand to ensure rapid touch switch product development. The device is available in 16-pin NSOP, 20-pin SOP and 20-pin DIP packages.