General Description
●The Enhanced I/O 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. The fully inte
●grated system oscillator HIRC, which requires no external components and which has three frequency selections, opens up a huge range of new application possibilities for these devices, some of which may include industrial control, consumer products, household appliances subsystem controllers, etc.
●Features
●CPU Features
●Operating voltage:
● fSYS= 4MHz: 2.2V~5.5V
● fSYS= 8MHz: 3.0V~5.5V
● fSYS= 12MHz: 4.5V~5.5V
●Up to 0.33s instruction cycle with 12MHz system clock at VDD=5V
●Idle/Sleep mode and wake-up functions to reduce power consumption
●Oscillator types:
● External high freuency Crystal -- HXT
● External RC -- ERC
● Internal high frequency RC -- HIRC
● External low frequency crystal -- LXT
●Four operational modes: Normal, Slow, Idle, 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 8-level subroutine nesting
●Bit manipulation instruction
●Low voltage reset function
●Wide range of available package types
●peripheral Features
●Up to 42 bidirectional I/O lines
●Software controlled 4-SCOM lines LCD COM driver with 1/2 bias
●External interrupt input shared with an I/O line
●Up to three 8-bit programmable Timer/Event Counter with overflow interrupt and prescaler
●Time-Base function
●Programmable Frequency Divider - PFD
●Up to 3 channel 8-bit PWM
