New 8-bit LCD MCU --- HT49R70A-1

November 21, 2001

The HT49R70A-1 represents Holtek's new generation 8-bit general purpose LCD series 8K OTP microcontroller. The HT49R70A-1 is the most featured in the LCD MCU series. It is featured with 224x8 Data RAM, 24 I/O pins, up to 160 pixels LCD driving capability, 16-level stack, and two 16-bit timers.

The HT49R70A-1 also possesses a low-power timer, which by utilizing a newly added RTC oscillator input, allows timer operation to continue even when the processor is in its power-saving or halt mode. The device also permits the function of the LCD to remain fully operational when the processor is in power-saving mode. By incorporating a range of ROM LCD options within the microcontroller the interface to the LCD is simplified as the user can select the required bias and com options to match the LCD to be used. In addition, by using a RAM mapping method, the system to LCD panel interface and operation is made much simpler.

With these special features the HT49R70A-1 is especially suited for a range of LCD display applications such as scales, multi-meters, water meters, gas meters, timers as well as a range of household appliance applications.

To complement Holtek's range of microcontroller devices, a comprehensive set of hardware and software tools have also been developed in the form of the HT-IDE2000 development system. Features such as real time emulation, memory/register modification, hardware execution breakpoints, trace analyzers etc, are all standard features of the system which provide designers with all the tools they need for rapid and efficient product application development and debug.