General Description

The HT49RA1/HT49CA1 is a Remote Type 8-bit MCU 8-bit high performance RISC architecture microcontroller. With its internal carrier generator and LCD Driver functions the device is is especially suitable for multiple I/O remote control product applications. The usual Holtek MCU features such as power down and wake-up functions, oscillator options, etc. combine to ensure user applications require a minimum of external components.

Features

? Operating voltage: 2.0V~3.6V

? 12 bidirectional I/O lines, 8 input lines, 8 segment output, PC0 (input/output)/REM

? Two external interrupt inputs shared with an I/O line

? 8-bit programmable Timer/Event Counter with overflow interrupt function

? Single 16-bit programmable timer/event counter with overflow interrupt function

? RC oscillator and 32768Hz crystal oscillator

? LCD driver with 33x2, 33x3 or 32x4 segments (C type only), 8 logical output option for SEG12~SEG19 and 4 I/O port option for SEG0~SEG3 by changing LCDC register

? 4096x15 program memory

? 160x8 data memory

? Real Time Clock - RTC

? 8-bit prescaler for RTC

? One carrier output (1/2 or 1/3 duty)

? Software LCD, RTC control

? Watchdog Timer function

? Power down and wake-up functions to reduce power consumption

? Up to 1μs instruction cycle with 4MHz system clock

? 4-level subroutine nesting

? Bit manipulation instruction

? Table read instructions

? 63 powerful instructions

? All instructions executed in one or two machine cycles

? Low voltage reset/detector function

? 64-pin LQFP package