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General Description

The Small Package 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

Sleep mode and wake-up functions to reduce power consumption

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

OTP Program Memory: 1K15 ~ 2K15

RAM Data Memory: 968

Watchdog Timer function