General Description

The Enhanced A/D MCUs are a series of 8-bit high performance, RISC architecture microcontrollers specifically designed for a wide range of applications. The usual Holtek microcontroller features of low power consumption, I/O flexibility, timer functions, oscillator options, power down and wake-up functions, watchdog timer and low voltage reset, combine to provide devices with a huge range of functional options while still maintaining a high level of cost effectiveness.

Features

CPU Features

●Operating voltage:

? fSYS=4MHz: 2.2V~5.5V

? fSYS=8MHz: 3.3V~5.5V

? fSYS=12MHz: 4.5V~5.5V

●Up to 0.33μs instruction cycle with 12MHz system clock at VDD=5V

●Oscillator types:

? External high frequency crystal -- HXT

? Internal RC -- HIRC

●Power down modes and wake-up function

●Fully integrated internal 4MHz, 8MHz and 12MHz oscillator requires no external components

●LIRC oscillator function for watchdog timer

●All instructions executed in one or two instruction cycles

●Table read instructions

●63 powerful instructions

●Up to 4-level stack

●Bit manipulation instruction

Peripheral Features

●Up to 2048×16 program memory

●Up to 96×8 data memory

●Up to 14 bidirectional I/O lines

●Up to 4 channel 12-bit ADC

●1 channel 8-bit PWM

●Low voltage reset function

●Watchdog timer function

●External interrupt input shared with an I/O line

●Up to two 8-bit programmable Timer/Event Counter with overflow interrupt and prescaler

●Time-Base functions

●Programmable Frequency Divider - PFD

●Package Types: 16 DIP/NSOP