HT68R2420数据手册Holtek中文资料规格书

描述 Description

The HT68R2420 device is an OTP Memory type 8-bit high performance RISC architecture microcontroller, designed for IR remote controllers and IR transmission related products. For memory features, the device includes an OTP Program Memory and an area of RAM Data Memory. Protective features such as an internal Watchdog Timer and Low Voltage Reset coupled with excellent noise immunity and ESD protection ensure that reliable operation is maintained in hostile electrical environments. A full choice of internal high and low speed oscillators are provided and the two fully integrated system oscillators require no external components for their implementation. The ability to operate and switch dynamically between a range of operating modes using different clock sources gives users the ability to optimize microcontroller operation and minimize power consumption. The device includes a 9-bit timer for IR carrier output and a Time-base function which can generate fixed time interrupt. The inclusion of flexible I/O programming features, high driving current capacity with many other features ensure that the device will find excellent use in IR remote controller and timer applications which require a high accuracy clock, a timing function or a high driving current.

特性 Features

CPU Features
Operating voltage ♦ fSYS =4MHz: 2.0V~5.5V
Up to 1μs instruction cycle with 4MHz system clock at VDD =5V
Power down and wake-up functions to reduce power consumption
Oscillator types ♦ Internal High Speed 4MHz RC – HIRC ♦ Internal Low Speed 32kHz RC – LIRC
Multi-mode operation: FAST, SLOW, IDLE and SLEEP
Fully integrated internal oscillators require no external components
All instructions executed in one or two instruction cycles
Table read instructions
61 powerful instructions
2-level subroutine nesting
Bit manipulation instruction

Peripheral Features
OTP Program Memory: (1K-16)×14
Data Memory: 32×8
Watchdog Timer function
16 bidirectional I/O lines
One programmable carrier output – using 9-bit timer
High Driving Current Output pin
Single Time-Base function for generation of fixed time interrupt signals
Low voltage reset function
Package types: 8-pin SOP, 16-pin NSOP, 20-pin NSOP/SSOP