HT46R51A/HT46R52A -- A/D Type 8-Bit OTP MCU

General Description

The HT46R51A/HT46R52A are 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, timer functions, oscillator options, multi-channel A/D converter, Pulse Width Modulation function, HALT and wake-up functions, watchdog timer, as well as low cost, enhance the versatility of these devices to suit a wide range of A/D application possibilities such as sensor signal processing, chargers, motor driving, industrial control, consumer products, subsystem controllers, etc.

Features

  • Low-power fully static CMOS design
  • Operating voltage:
    fSYS=4MHz: 2.2V~5.5V
    fSYS=8MHz: 3.3V~5.5V
  • Program Memory:
    1Kx15 OTP (HT46R51A)
    2Kx15 OTP (HT46R52A)
  • Data memory:
    96x8 RAM (HT46R51A)
    128x8 RAM (HT46R52A)
  • A/D converter: 12bitsx5Ch
    External A/D converter reference voltage input pin
  • 14 bidirectional I/O lines
  • 1 interrupt input shared with an I/O line
  • 8-bit programmable timer/event counter with overflow interrupt and 7-stage prescaler
  • On-chip crystal and RC oscillator
  • 6-level subroutine nesting
  • Watchdog Timer
  • Low voltage reset function
  • HALT function
  • Up to 0.5µs instruction cycle with 8MHz system clock at VDD=5V
  • 1-channel 8-bit PWM output shared with an I/O line
  • PFD function
  • Bit manipulation instruction
  • Table read instruction
  • 63 powerful instructions
  • All instructions in one or two machine cycles
  • 16-pin NSOP, 18-pin DIP, 20-pin SOP/SSOP package

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