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Second Generation Li-Battery Protection MCUs

27/05/2022

When compared with the first generation HT45F85xx series, these new devices also have Li-battery voltage detection circuitry with an accuracy of ±24mV, new add zero standby power consumption function, passive balance circuitry, high voltage MOSFET gate-drivers in addition to other functions. One additional special feature is that the internal LDO now has an increased output current capability of up to 50mA. The devices are suitable for 3 to 8-cell Li-battery products, such as BMS boards, power tools, wireless vacuum cleaners and so on.

The devices contain 8K×16/16K×16 of Flash Program Memory, 512×8/1024×8 of Data Memory and a 128×8/1024×8 EEPROM as well as 21/25 multi-function I/Os. Each device includes a 12-bit multi-channel A/D converter and a comparator function.

Main Features

CPU Features:

  • Operating Voltage
    fSYS=8MHz:1.8V~5.5V
    fSYS=12MHz:2.7V~5.5V
    fSYS=16MHz:3.3V~5.5V
  • Up to 0.25μs instruction cycle with 16MHz system clock at VDD=5V
  • Power down and wake-up functions to reduce power consumption
  • Oscillator types
    External High Speed Crystal – HXT
    Internal High Speed 8/12/16 MHz RC – HIRC
    External Low Speed 32.768kHz Crystal – LXT
    Internal Low Speed 32kHz RC – LIRC
  • Multi-mode operation: FAST, SLOW, IDLE and SLEEP
Documents Tech question
Holtek HT45 F8650 8662

Second Generation Li-Battery Protection MCUs

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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 F8662v100 Datasheet
  • Holtek HT45 F8650v100 Datasheet
Pexels thisisengineering 3913017

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