Air Conditioner


Block Diagram

Choose a diagram:

Outdoor Unit

Air Conditioner BD1

Indoor Unit

Air Conditioner BD2

Remote Control

Air Conditioner BD3

Supported Devices

Power Management

AC-DC Controllers with Integrated Power Switch

BLDC, H-Bridge, Stepper


I3C/I²C Digital Temp. Sensors


3.3 V / 5 V IO CAN Transceivers

Processors and Microcontrollers

KE Series Arm Cortex-M4/M0+



  • Up to 168MHz Cortex-M4 core supporting a broad range of processing bandwidth requirements while maintaining excellent cost-effectiveness, easy to use packages and a wide range of memory densities
  • Enhanced robust IOs make sure the high performance under noisy environment
  • Flextimer featured 8ch PWM supports 3-phase motor control with dead time insertion and fault detect
  • 1MSPS 12b ADC with up to 16ch input per module, provides fast sampling rate for prompt data conversion and storage
  • Analog comparator for fast response to external analog change
  • Programmable delay block with flexible trigger system providing various interconnections for on chip modules, ADC, DAC, Flextimers, ACMP, etc.

K32 L3

  • Arm Cortex-M4 core up to 72 MHz
  • Cortex-M0+ core up to 72 MHz
  • Up to 1.25 MB program flash memory
  • Up to 384 kB SRAM
  • 48 kB ROM with built-in secure boot loader
  • Cryptographic subsystem that includes a dedicated core, dedicated instruction memory (IRAM and IROM), and dedicated data RAM for autonomous implementation of encryption, signing, and hashing algorithms including AES-256, 3DES/DES, SHA-256, and RSA and ECC acceleration


Quick reference to our documentation types.

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