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New Charger Flash Microcontroller

07/01/2022

The HT45F5Q-2A is a Flash Memory A/D type 8-bit high performance RISC architecture microcontroller especially designed for battery charger applications.

The HT45F5Q-2A can be used in lead acid/lithium battery chargers for electric motorcycles and power tools etc. The pins of the HT45F5Q-2A are compatible with the HT45F5Q-2, and the device has an updated DAC function to enhance product voltage and current accuracy of up to 1%.

Main Features

CPU Features:

  • Operating voltage
    - fSYS=8MHz: 2.2V~5.5V
  • Up to 0.5μs instruction cycle with 8MHz system clock at VDD=5V
  • Power down and wake-up functions to reduce power consumption
  • Oscillator types:
    - Internal High Speed 8MHz RC – HIRC
    - Internal Low Speed 32kHz RC – LIRC
  • Multi-mode operation: FAST, SLOW, IDLE and SLEEP
  • Fully integrated internal oscillators require no external components
  • All instructions executed in one or two instruction cycles
  • Table read instructions
  • 61 powerful instructions
  • 6-level subroutine nesting
  • Bit manipulation instruction

Peripheral Features:

  • Flash Program Memory: 2K×15
  • RAM Data Memory: 128×8
  • Emulated EEPROM Memory: 32×15
  • Watchdog Timer function
  • 15 bidirectional I/O lines
  • One pin-shared external interrupt
  • One Timer Module for time measurement, compare match output or PWM output
  • Dual Time Base functions for generation of fixed time interrupt signals
  • Fully-duplex/Half-duplex Universal Asynchronous Receiver and Transmitter Interface – UART
  • 7 external channel 12-bit resolution A/D converter
  • Battery charger circuit
    - 14-bit D/A Converter and OPA0 are used for constant current control
    - 12-bit D/A Converter and OPA1 are used for constant voltage control
    - OPA2 is 20 times amplifier for current sense
  • Low voltage reset function
  • Package types: 16/20-pin NSOP
Documents Tech question
Holtek HT45 F5 Q 2 A

New Charger Flash Microcontroller

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Holtek

Holtek Semiconductor is a leading professional IC design house in Taiwan having its major business activities focused in the area of microcontroller and peripheral component design.

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Documents

  • Holtek HT45 F5 Q 2 Av100 Datasheet
Pexels thisisengineering 3913017

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