Holtek Semiconductor HT68F2420
The HT68F2420 device is a Flash Memory type 8-bit high performance RISC architecture microcontroller designed for IR remote controllers and IR transmission related products. For memory features, the Flash Memory offers users the convenience of multi-programming features. The device includes a 9-bit timer for IR carrier output, a Time-base function which can generate fixed time interrupt.FEATURES
CPUFEATURES
● Operating Voltage ♦ fSYS=4MHz: 1.8V~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 ♦ 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
● Flash Program Memory: 1K×13● 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
● One Time-Base function for generation of fixed time interrupt signals
● Flash program memory can be re-programmed up to 10,000 times
● Flash program memory data retention > 10 years
● Low voltage reset function...