HT56R22/HT56R23/HT56R24/HT56R25/HT56R26 -- TinyPowerTM A/D Type 8-Bit OTP MCU with DAC

General Description

These TinyPowerTM A/D Type 8-bit high performance RISC architecture microcontrollers are specifically, designed for applications that interface directly to analog signals. The devices include an integrated multi-channel Analog to Digital Converter, Pulse Width Modulation and and DAC outputs.

With their fully integrated SPI and I2C functions, designers are provided with a means of easy communication with external peripheral hardware. The benefits of integrated A/D, PWM and DAC functions, in addition to low power consumption, high performance, I/O flexibility and low-cost, provides the device with the versatility for a wide range of products in the home appliance and industrial application areas. Some of these products could include electronic metering, environmental monitoring, handheld instruments, electronically controlled tools, motor driving in addition to many others.

The unique Holtek TinyPower technology also gives the devices extremely low current consumption characteristics, an extremely important consideration in the present trend for low power battery powered applications. 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.

Features

CPU Features

  • Operating voltage:
    fSYS=32768Hz: 2.2V~5.5V
    fSYS=4MHz: 2.2V~5.5V
    fSYS=8MHz: 3.0V~5.5V
    fSYS=12MHz: 4.5V~5.5V
  • Up to 0.33us instruction cycle with 12MHz system clock at VDD=5V
  • Idle/Sleep mode and wake-up functions to reduce
    power consumption
  • Oscillator types:
    External 32768Hz Crystal -- LXT
    External RC -- ERC
    Internal 4/8/12MHz RC -- HIRC
    External high frequency crystal -- HXT
    Internal 32kHz RC -- LIRC
  • Four operational modes: Normal, Slow, Idle, Sleep
  • Fully integrated internal 4MHz, 8MHz and 12MHz oscillator requires no external components
  • All instructions executed in one or two instruction cycles
  • Table read instructions
  • 63 powerful instructions
  • Up to 12-level subroutine nesting
  • Bit manipulation instruction

Peripheral Features

  • OTP Program Memory: 2Kx14 ~ 32Kx16
  • RAM Data Memory: 128x8 ~ 2304x8 Bits
  • Watchdog Timer function
  • Up to 50 bidirectional I/O lines
  • 8 channel 12-bit ADC
  • Up to 4 channel 12-bit PWM
  • Software controlled 4-SCOM lines LCD driver with 1/2 bias
  • Multiple pin-shared external interrupts
  • Up to three 8-bit programmable Timer/Event Counter with overflow interrupt and prescaler
  • Up to one 16-bit programmable Timer/Event Counter with overflow interrupt
  • Serial Interfaces Module - SIM for SPI or I2C
  • Time-Base functions
  • Low voltage reset function
  • Low voltage detect function
  • PFD/Buzzer for audio frequency generation
  • 12-bit Audio DAC output
  • Wide range of available package types

Technical Document

Other Information