HT46R14A -- A/D Type 8-Bit OTP MCU
(EOL Products -- Last time busy date: 2014/05/25, Production stops date: 2014/08/25)

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.

The advantages of low power consumption, I/O flexibility, programmable frequency divider, timer functions, oscillator options, multi-channel A/D Converter, HALT and wake-up functions, provide the device with the versatility to meet the requirements of wide range of A/D application possibilities such as external analog sensor signal processing.

With the inclusion of two comparators and a fully integrated programmable pulse generator, the device is particularly suitable for use in products such as induction cookers and other home appliance application areas.


  • 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
  • 4096x15 program memory
  • 192x8 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 0.5us 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

Technical Document

Other Information