HT46R75D-3 -- Dual Slope A/D Type 8-Bit OTP MCU with LCD

General Description

The HT46R75D-3 is an 8-bit high performance, RISC architecture microcontroller device specifically designed for A/D with LCD 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, Dual slope A/D converter, LCD display, HALT and wake-up functions, watchdog timer, as well as low cost, enhance the versatility of these devices to suit for a wide range of AD with LCD application possibilities such as sensor signal processing, scales, consumer products, subsystem controllers, etc.

Features

  • Operating voltage:
    fSYS=4MHz: 2.2V~5.5V
    fSYS=8MHz: 3.3V~5.5V
  • Three system oscillators:
    - External Crystal oscillator -- HXT
    - External RC oscillator -- ERC
    - Internal High Frequency RC oscillator -- HIRC
  • Up to 22 bidirectional I/O lines
  • One external interrupt input shard with an I/O lines
  • One 8-bit and two 16-bit programmable timer/event counter with overflow interrupt and an 8-bit prescaler
  • LCD driver with 24x8 or 28x4 segments
  • LCD bias type: 1/3 bias R type or C type
  • Program Memory: 8Kx16
  • Data Memory: 192x8
  • Single differential input channel dual slope Analog to Digital Converter with Operational Amplifier
  • Watchdog Timer with regulator power
  • Buzzer output
  • Internal 12kHz RC oscillator
  • External 32.768kHz Crystal oscillator
  • Power-down and wake-up features reduce power consumption
  • Voltage regulator (3.3V) and charge pump
  • Embedded voltage reference generator (1.5V)
  • 8 subroutine nesting levels
  • 16-bit table read instruction
  • Low Voltage Reset function
  • One vibration sensor input
  • Four touch-key inputs
  • Bit manipulation instruction
  • Up to 0.5us instruction cycle with 8MHz system clock
  • 63 powerful instructions
  • All instructions in 1 or 2 machine cycles
  • 64-pin LQFP package

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