New 8 bit General Purpose LCD Microcontroller HT49C70-1

July 19, 2002

Supplementing the recent release of the HT49R70A-1, a One Time Programmable MCU, but focused in the area of high volume production, Holtek has released the fully compatible mask version device, the HT49C70-1. Representing another addition to Holtek's new generation of microcontroller devices, the HT49C70-1 with its 8K of internal program mask memory, and 224 X 8 bytes of internal data RAM is a full-feature device containing 24 I/O pins, an LCD driving capability of up to 160 pixels, a 16 level stack as well as 16-bit and 8-bit timer functions. The inclusion of a Real Time Clock or RTC allows the system while in the power down mode to retain a real-time timer function and keep the LCD display function operational. Further features within the MCU enable the user to select various options to select various LCD types. In addition, by using a RAM mapping method, the system to LCD panel interface and operation is made much simpler. The device is extremely suitable for products which require LCD panels such as scales, water meters, electronic multimeters, gas meters, timers, calculators, remote controllers as well as many other industrial and home appliance applications.

To complement its microcontroller device range Holtek has developed a comprehensive development system known as the HT-IDE2000. The development system incorporates a comprehensive suite of both software and hardware tools, such as real-time simulation, step, breakpoint and full trace features to ease the development and debug process. The additional included feature of an LCD panel simulator allows designers to fully simulate LCD panels without connection to actual LCD hardware, giving a complete tools package that ensures LCD microcontroller application are designed and debugged with a minimum of delay and reach their respective markets in the shortest time possible.