●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. In addition, these devices
●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 0.33ms instruction cycle with 12MHz system clock at VDD= 5V
● · Oscillator types:
● External high freuency Crystal -- HXT
● External RC -- ERC
● Internal RC -- HIRC
● External low frequency crystal -- LXT
● · Three operational modes: Normal, Slow, Sleep
● · Fully integrated internal 4MHz, 8MHz and 12MHz oscillator requires no external components
● · Watchdog Timer function
● · LIRC oscillator function for watchdog timer
● · All instructions executed in one or two instruction cycles
● · Table read instructions
● · 63 powerful instructions
● · Up to 6-level subroutine nesting
● · Bit manipulation instruction
● · Low voltage reset function
● · Wide range of available package types
● Peripheral Features
● · Up to 26 bidirectional I/O lines
● · Up to 8 channel 12-bit ADC
● · Up to 2 channel 8-bit PWM
● · Software controlled 4-SCOM lines LCD driver with 1/2 bias
● · 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 function
● · Programmable Frequency Divider -- PFD
● · 8x8 LED driving capability
