HE84770D

HE84770D is a member of 8-bit Micro-controller series developed by King Billion Electronics. Four LCD driver configurations, 32 COM x 128 SEG, 48 COM x 112 SEG, 64 COM x 96 SEG or 80 COM x 80 SEG are available by mask option. 24 LCD segment driver pins are multiplexed with I/O pins to provide flexibility of wide variety of combinations to suit the needs of applications. The built-in LCD power supply of HE84770D is equipped with voltage charge-pump circuit to generate the high voltage required by the high duty LCD driver, bias voltage generating circuit and input voltage regulator circuit to supply stable LCD display effect over the wide battery life. The built-in OP comparator can be used with (light, voice, temperature, humility) sensor and used as battery low detection. 7-bit current-type D/A converter and PWM device provide the complete speech output mechanism. The 2 MB ROM can be used in the storage of speech, graphic, text, etc. HE84770D is ideal for applications such as Translator, Data Bank, Educational Toy, Digital Voice Recording System, etc.

The instruction set of HE84770D is easy to learn and simple to use. Only 32 instructions with four addressing modes are provided. Most of instructions take only 3 oscillator clocks to execute. The processing power is enough to most of battery operation system.