General Description
The HT49RV3/HT49CV3 are 8-bit high performance single chip MCUs. Their single cycle instruction and 2-stage pipeline architecture make them suitable for high speed applications. As the devices include an VFD driver they are suitable for use in products which require a front panel for their operation such as DVDs, VCDs, mini-component audio systems, cassette decks, tuners, CD players, other home appliances, etc.

FEATUREs
• Operating voltage:
    fSYS=4MHz: 2.2V~5.5V
    fSYS=8MHz: 3.3V~5.5V
• 17 bidirectional I/O lines (PA, PB, PC, PD)
• Two external interrupt inputs
• Two 16-bit programmable timer/event counters with PFD (programmable frequency divider) function
• One 8-bit Remote Control Timer (RMT), pin-shared with PC7
• Single channel serial interface
• VFD driver with 11x11 segments (16-segment & 4-grid to 11-segment & 11-grid)
• 2Kx16 program memory
• 96x8 data memory RAM
• Supports PFD for sound generation
• Real Time Clock (RTC)
• 8-bit prescaler for RTC
• Watchdog Timer
• Buzzer output
• On-chip crystal, RC and 32768Hz crystal oscillator
• HALT function and wake-up feature reduce power consumption
• 6-level subroutine nesting
• Low voltage reset function
• Bit manipulation instruction
• 16-bit table read instruction
• Up to 0.5μs instruction cycle with 8MHz system clock
• 63 powerful instructions
• All instructions in 1 or 2 machine cycles
• 52-pin QFP package