With regard to external interfacing it is well equipped with I2C, SPI and UART interfaces and additionally includes an area of non-volatile EEPROM memory which can be used to save data such as product parameters or manufacturing data. This data will be retained even when power is removed.

The device includes 4K words of Program Memory, 256 bytes of SRAM Data Memory and 64 bytes of Data EEPROM. In addition to the external crystal oscillator, the device also includes an accurate fully internal RC oscillator with selectable frequencies of 4.9152MHz, 9.8304 MHz and 14.7456MHz as well as an additional low speed internal RC oscillator with a fixed 32kHz frequency. Additional features includes an internal LCD driver with a 28x4 pixel output which can directly drive product LCD panels.

The fully integrated and new design 20-bit Delta-Sigma A/D converter has its own LDO output and PGA small signal amplifier. The device includes multiple Timer Modules, which have 5 different operating modes. These are Timer/Counter Mode, Input Capture Mode, Compare Mode, Single Pulse Output Mode and PWM Output Mode.

As for packaging, the device is supplied in a 64-pin LQFP package type. With its abundant hardware resources and flexible functions, the device will be highly capable of providing MCU solutions for a huge variety of applications such as home health care products, household appliances etc. Products could include forehead thermometers, ear thermometers, high-resolution electronic scales as well as a wide range of other consumer products.

To support the new device, Holtek naturally supplies a full suite of excellent hardware and software development tools including the HT-IDE300 and ICE (In-Circuit-Emulator) which include trace analysis features, breakpoint setup as well as a host of other functions. The Holtek’s e-WriterPro also provides a means of In-Circuit Programming to allow for fast program updates during development. There are also a range of application guides to ensure developers have their designs up and running in the shortest time possible.