General Description
The HT49C30-1 and the HT49C30L are 8-bit high performance single chip microcontrollers. The HT49R30A-1 is the OTP version of the HT49C30-1. Its single cycle instruction and two-stage pipeline architecture make it suitable for high speed applications. The devices are also suitable for use in multiple LCD low power applications such as scales, leisure products, high-level household appliances, hand held LCD products and batteries operated systems in particular.

Features
• Operating voltage:
    2.2V~5.5V for HT49R30A-1/HT49C30-1
    1.2V~2.2V for HT49C30L
• 6 input lines
• 8 bidirectional I/O lines
• Two external interrupt input
• One 8-bit programmable timer/event counter with PFD (programmable frequency divider) function
• LCD driver with 19x2, 19x3 or 18x4 segments
• 2Kx14 program memory ROM
• 96x8 data memory RAM
• 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
• 4-level subroutine nesting
• Bit manipulation instruction
• 14-bit table read instruction
• Up to 0.5μs instruction cycle with 8MHz system clock for HT49R30A-1/HT49C30-1
• Up to 8μs instruction cycle with 500kHz system clock for HT49C30L
• 63 powerful instructions
• All instructions in 1 or 2 machine cycles
• Low voltage reset/detector for HT49R30A-1/HT49C30-1
• 48-pin SSOP package