General Description
The HT49RA0/HT49CA0 are 8-bit high performance, RISC architecture microcontroller devices specifically designed for multiple I/O control product applications. The mask version HT49CA0 is fully pin and functionally compatible with the OTP version HT49RA0 device.
The advantages of low power consumption, I/O flexibility, timer functions, oscillator options, watchdog timer, HALT and wake-up functions, as well as low cost, enhance the versatility of this device to suit a wide range of application possibilities such as industrial control, consumer products, and particularly suitable for use in products such as infrared LCD remote controllers and various subsystem controllers.
The HT49CA0 is under development and will be available soon.

Features
• Operating voltage: 2.0V~3.6V
• 8 bidirectional I/O lines and 8 input lines
• Two external interrupt input
• One 8-bit programmable timer/event counter
• LCD driver with 212, 213 or 204 segments
• 2K14 program memory
• 968 data memory RAM
• Real Time Clock (RTC)
• 8-bit prescaler for RTC
• One carrier output (1/2 or 1/3 duty)
• Software LCD, RTC control
• On-chip RC and 32768Hz crystal oscillator
• Watchdog Timer
• HALT function and wake-up feature reduce power consumption
• 4-level subroutine nesting
• Bit manipulation instruction
• 14-bit table read instruction
• Up to 1μs instruction cycle with 4MHz system clock
• 63 powerful instructions
• All instructions in 1 or 2 machine cycles
• Low voltage reset/detector function
• 52-pin QFP package