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