General Description
The HTG12B0 is a processor from HOLTEK
s 4-bit stand-alone single chip microcontroller specially designed for LCD display and time piece product applications.

FEATUREs
● Operating voltage: 2.4V~3.6V
● Eight input lines
● Eight input/output lines
● Five working registers
● 4K  8  4 program ROM
● 128  4  8 (4096) bits data memory RAM
● Sound effect circuit
● 40 segment  16 common, 1/4 bias LCD driver
● LCD output is fixed at 4.4V
● RC oscillator & 32768Hz crystal oscillator
● 8-bit timer with internal or external clock source
● Internal timer overflow
● Up to 4s instruction cycle with 1MHz system clock
● One level subroutine nesting
● Halt feature reduces power consumption
● 8-bit table read instruction