HT46R4A -- Cost-Effective A/D Type 8-Bit MCU (Restricted Products)

General Description

The HT46R4A is a device from the Cost-Effective A/D Type Series of MCUs. As an 8-bit high performance RISC architecture microcontroller, the device is designed especially for applications that interface directly to analog signals, such as those from sensors. The devices include an integrated multi-channel Analog to Digital Converter in addition to two Pulse Width Modulation outputs.

The usual Holtek MCU features such as power down and wake-up functions, oscillator options, programmable frequency divider, etc. combine to ensure user applications require a minimum of external components.

The benefits of integrated A/D and PWM functions, in addition to low power consumption, high performance, I/O flexibility and low-cost, provides the device with the versatility to suit a wide range of application possibilities such as sensor signal processing, motor driving, industrial control, consumer products, subsystem controllers, etc.

As is the case with all Holtek microcontroller devices, the HT46R4A is fully supported by a full suite of professional hardware and software tools, containing comprehensive features to ensure user applications are designed and debugged in as short a time as possible.

Features

  • Operating voltage:
    fSYS=4MHz: 2.2V~5.5V
    fSYS=8MHz: 3.3V~5.5V
  • Max of 27 bidirectional I/O lines
  • External interrupt input shared with I/O line
  • Two 8-bit programmable Timer/Event Counters with overflow interrupt
  • Integrated crystal and RC oscillator
  • Watchdog Timer
  • 4096x15 program memory
  • 192x8 data memory 
  • PFD for audio frequency generation
  • Power down and wake-up functions to reduce power consumption
  • Up to 0.5µs instruction cycle with 8MHz system clock at VDD=5V
  • 6-level subroutine nesting
  • 6 channel 9-bit resolution A/D converter
  • Dual channel 8-bit PWM output shared with I/O lines
  • Bit manipulation instruction
  • Table read instructions
  • 63 powerful instructions
  • All instructions executed in one or two machine cycles
  • Low voltage reset function
  • 28-pin SKDIP/SOP, 44-QFP package

Technical Document

Other Information