General Description
The HT46R12A is an 8-bit, high performance, RISC architecture microcontroller devices specifically designed for A/D applications that interface directly to analog signals, such as those from sensors.

FEATUREs
• Operating voltage:
     fSYS= 4MHz: 2.2V~5.5V
     fSYS= 8MHz: 3.3V~5.5V
• 17 bidirectional I/O lines
• Two 8-bit programmable timer/event counters with overflow interrupt and 7-stage prescaler
• Single 8-bit programmable pulse generator - PPG - output channel with prescaler and 8-bit programmable timer counter, supporting both active low or active high output
• Integrated crystal and RC oscillator
• Watchdog Timer
• 2048 X 14 program memory
• 88 X 8 data memory RAM
• PFD for audio generation
• Power-down and wake-up functions for reduced power consumption
• Up to 0.5μs instruction cycle with 8MHz system clock at VDD= 5V
• 8-level subroutine nesting
• 4 channel 9-bit resolution A/D converter
• Two comparators with interrupt function
• Bit manipulation instruction
• 14-bit table read instruction
• 63 powerful instructions
• Instructions executed in one or two machine cycles
• Low voltage reset function
• 24-pin SKDIP/SOP package types available