HT46RS03/HT46RS03P -- 2K 8-Bit OTP MCU with OPA & Comparator

General Description

The HT46RS03/HT46RS03P is an 8-bit, high performance, RISC architecture microcontroller device specifically designed for operational amplifier applications that can be used to interface directly to ultrasonic transducers.

The advantages of low power consumption, I/O flexibility, programmable frequency divider, timer functions, oscillator options, internal comparator, internal operational amplifiers, power-down and wake-up functions, enhance the versatility of these devices to suit a wide range of application possibilities such as remote control appliances, car reversing systems, level meters, etc.

Features

  • Operating voltage:
    fSYS=4MHz: 2.2V~5.5V
    fSYS=8MHz: 3.3V~5.5V
    fSYS=16MHz: 4.5V~5.5V
  • OTP Program Memory: 2Kx15 ROM
  • RAM Data Memory: 128x8 RAM
  • 16 bidirectional I/O lines
  • External interrupt input shared with an I/O line
  • Single 8-bit programmable Timer/Event Counters with overflow interrupt and 7-stage prescaler
  • Single 16-bit programmable Timer/Event Counter
    with overflow interrupt
  • External crystal and RC oscillator
  • Watchdog Timer function
  • PFD for audio frequency generation
  • Power down and wake-up functions to reduce power consumption
  • Up to 0.25us instruction cycle with 16MHz system clock at VDD=5V
  • 4-level subroutine nesting
  • Bit manipulation instruction
  • Table read instructions
  • 63 powerful instructions
  • All instructions executed in one or two machine cycles
  • Low voltage reset function
  • Three integrated operational amplifiers, one with gain control function
  • Single comparator with interrupt function
  • Embedded 5V LDO in HT46RS03P
  • 16-pin DIP/SSOP package
    20-pin DIP/SSOP package

Technical Document

Other Information