General Description
The HT49R10A-1 is an 8-bit, high performance, RISC architecture microcontroller devices specifically designed for a wide range of LCD applications. The mask version HT49C10-1 is fully pin and functionally compatible with the OTP version HT49R10A-1 device.

FEATUREs
• Operating voltage:
   fSYS= 4MHz: 2.2V~5.5V
   fSYS= 8MHz: 3.3V~5.5V
• 2 input lines
• 8 bidirectional I/O lines
• External interrupt input
• 8-bit programmable timer/event counter with PFD, programmable frequency divider, function
• LCD driver with 15x2, 15x3 or 14x4 segments
• 1Kx14 program memory
• 64x8 data memory RAM
• Real Time Clock - RTC
• RTC 8-bit prescaler
• Watchdog Timer
• Buzzer output
• On-chip crystal, RC and 32768Hz crystal oscillator
• Power-down and wake-up feature reduce power consumption
• 2-level subroutine nesting
• Bit manipulation instruction
• 14-bit table read instruction
• Up to 0.5μs instruction cycle with 8MHz system clock
• 63 powerful instructions
• All instructions executed in 1 or 2 machine cycles
• Low voltage reset/detector
• 44-pin QFP package