General Description
The HTG12N0 is the processor from HOLTEK’s 4-bit stand alone single chip microcontroller specially designed for LCD display and time piece product applications.
It is ideally suited for multiple LCD time piece low power applications among which are calculators, scales, calendar and hand held LCD products.

Features
• Operating voltage: 2.4V~3.5V
• Seven input lines
• Six output lines
• Halt feature reduces power consumption
• Up to 4µs instruction cycle with 1MHz system clock
• 4K × 8 × 4 program ROM
• Data memory RAM size 256 × 4 bits
• 64 segments × 8 commons, 1/5 bias LCD driver
• 8-bit table read instruction
• Five working registers
• Internal timer overflow
• One level subroutine nesting
• RC oscillator and 32768Hz crystal oscillator
• 8-bit timer with internal or external clock source
• Sound effect circuit