General Description
The HT46R652 is an 8-bit, high performance, RISC architecture microcontroller devices specifically designed for A/D product applications that interface directly to analog signals and which require an LCD Interface.
The advantages of low power consumption, I/O flexibility, timer functions, oscillator options, multi-channel A/D Converter, Pulse Width Modulation function, Power-down and wake-up functions, in addition to a flexible and configurable LCD interface enhance the versatility of these devices to control a wide range of applications requiring analog signal processing and LCD interfacing, such as electronic metering, environmental monitoring, handheld measurement tools, motor driving, etc. for both the industrial and home appliance application areas.

FEATUREs
• Operating voltage:
   fSYS=4MHz: 2.2V~5.5V
   fSYS=12MHz: 3.3V~5.5V
• 32 bidirectional I/O lines
• Two external interrupt inputs
• Two 16-bit programmable timer/event counters with PFD (programmable frequency divider) function
• LCD driver with 41x3 or 40x4 segments (logical output option for SEG0~SEG23)
• 8Kx16 program memory
• 384x8 data memory RAM
• PFD for sound generation
• Real Time Clock (RTC)
• 8-bit RTC prescaler
• Watchdog Timer
• Buzzer output
• On-chip crystal, RC and 32768Hz crystal oscillator
• Power-down function and wake-up features reduce power consumption
• 16-level subroutine nesting
• 8-channel 12-bit resolution A/D converter
• 16-channel 8-bit PWM output shared with 16 I/O lines
• Bit manipulation instruction
• 16-bit table read instruction
• Up to 0.33μs instruction cycle with 12MHz system clock
• 63 powerful instructions
• All instructions in 1 or 2 machine cycles
• Low voltage reset/detector function
• 100-pin QFP package