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KM1M4BF66G

The KM1M4BF series is a 32-bit microcontroller with built-in Flash memory and suitable for various home appliances

such as air conditioner outdoor units, washing machines, and refrigerators that require high-speed peripheral processing technology in inverter Motor Controlling.

 

The KM1M4BF series is based on Arm's Cortex-M4F and provides the following advanced features and applications.

 •Built-in memory for instructions and data

 •DMA controller

 •Clock generator

 •Bus controller

 •Interrupt controller

 •Peripheral circuits Timers/serial interfaces

 •PWM control circuit specialized for inverter motor control

 •High-precision and high-speed analog circuits

 

The KM1M4BF series provides a system safety design and various safety mechanisms,

including memory protection, clock monitoring, power supply voltage detection, watchdog timer, etc.

 

Lineup

 KM1M4BF lineup

 

Block Diagram

 KM1M4BF Series block diagram

 

Features

System

  

Peripherals

 •Arm® Cortex®-M4F core

     •8 sets of motor & power control PWM

 •Runs up to 120 MHz

       - Complementary PWM output

 •Up to 264 KB Flash Memory for instruction

       - Dead time insert, Output shift

 •Up to 32 KB Flash Memory for data

       - Duty cut, period cut

 •Up to 16 KB SRAM

       - Synchronous ADC trigger

 •Operating voltage: 2.9V ~ 5.5V

  

  •14 sets of 16-bit timer

 •Operating temperature: Tc= -40°C ~ +110°C

  

  •Up to 7 sets of UART

 •8-channel PDMA

  

  •Up to 7 sets of I2C

 •ESD HBM 2kV

     •Up to 7 sets of SPI

 

  

  •Up to 85 GPIO (LQFP100)
     

Analog

  

Security

 •3 sets of 12-bit 2 Msps ADC, up to 23-channel

     •Memory ECC

 •6 sets of 8-bit DAC

     •Memory protection

 •1 set of 10-bit DAC

  

  •Clock monitoring

 •2 sets of differential variable gain amplifier (VGA)

  

  •ADC error detection

 •4 sets of comparator

  

  •Power supply voltage detection

Reference Board

  Solution

  Target

 Input Power

  Structure

 Deliverables

 Low voltage motor

EVA board

MCU:KM103HFD

KM1M7AF/M4BF

 KM1M4BF-evb1

Air purifiers

Power tools

conveyor

 134W

 BLDC motor x 1

 Hard Ref

Soft IP

 High Voltage Motor

EVA board

MCU:KM103HFD

KM1M7AF/M4BF

 KM1M4BF-evb2

 Air conditioner

(Compressor and Fan)

Washing machine

Refrigerator

 2kW

 BLDC motor x 2

Single phase PFC

Hard Ref

Soft IP

3-phase

interleaved PFC

EVA board

MCU:KM1M7BF

   KM1M4BF-evb3

Air conditioner

Heat Pump

3.5kW

BLDC motor x 2

3phase PFC

Hard Ref

Soft IP

 

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