General Description
The HT46R14A 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
21 bidirectional I/O lines
Three interrupt input shared with an I/O line
Two 8-bit programmable timer/event counters with overflow interrupt and 7-stage prescaler
Two 8-bit programmable pulse generator - PPG output channel with prescaler and 8-bit programmable timer counter, supporting both active low or active high output
Two comparator
409615 program memory
1928 data memory RAM
Integrated crystal and RC oscillator
Watchdog Timer
PFD for audio generation
Power-down and wake-up functions for reduced power consumption
Up to 0.5s instruction cycle with 8MHz system clock at VDD=5V
8-level subroutine nesting
8 channel 9-bit resolution A/D converter
Two comparators with interrupt function
Bit manipulation instruction
15-bit table read instruction
63 powerful instructions
Instructions executed in one or two machine cycles
Low voltage reset function
28-pin SKDIP/SOP packages