APM32F445/446 Series

The APM32F445/446 series are high-performance MCUs built on a 40nm process with an Arm® Cortex®-M4F core, delivering high performance, large on-chip memory, and robust security. They integrate CAN with CAN FD, LPUART, LPI2C, and 12-bit ADCs, operate over a temperature range of –40°C to +105°C, and comply with IEC 60730 and IEC 60335, making them well-suited for instrumentation, robotics, industrial control, and servo drive applications.

Packaging Roadmap

Performance

System

  • Arm® Cortex®-M4F core
  • Maximum frequency up to 112MHz
  • Supports single-precision FPU

Memory

  • Flash: 512KB/1MB
  • SRAM: 64KB/128KB
  • 64KB Data Flash with ECC
  • 4KB CFGNVM configurable as SRAM or EEPROM

Power Management

  • VDD range: 2.7V to 5.5V
  • VDDA range: 2.7V to 5.5V
  • Supports POR/LVR
  • Supports LVD

Timers

  • 16-bit general-purpose timers: 4/6
  • 16-bit low-power timer: 1
  • 32-bit timer: 1
  • Programmable delay units (PDU): 2
  • Watchdog timers: 2
  • RTC: 1

I/Os

  • Up to 89 I/Os
  • All I/Os are mapped to external interrupt vectors

Analog Peripherals

  • 12-bit ADCs: 2, external channels: 16+13/16+16
  • Comparator with integrated 8-bit DAC
  • Programmable delay units (PDU): 2

Peripheral Interfaces

  • LPUART: 3
  • LPI2C: 1
  • LPSPI: 3
  • CAN: 3 (all support CAN FD)

Debug Interfaces

  • SWJ-DP
  • DWT
  • ITM
  • TPIU
  • FPB

Security and Safety

  • Cryptographic Services Engine (CSEc)
  • 128-bit unique device ID
  • CRC calculation unit
  • Internal watchdog timer (WDT)
  • External watchdog monitor (EWDT)
  • Memory Protection Unit (MPU)
  • ECC protection for Flash and SRAM

Package

  • LQFP48/64/100

Selection Tools

Part No.

Frequency

(MHz)

FLASH

(KB)

SRAM

(KB)

FPUI/Os

Voltage

(V)

TimerAnalog InterfaceConnectivitySecurityPackage

FTMR

(16bit)

LPTMR

(16bit)

LPITMR

(32bit)

Systick

(24bit)

WDTEWDTRTC

ADC

12-bit Cell

ADC 

12-bit Channels

Comparator 

with 8-bit DAC

PDULPSPILPI2CLPUARTCANSAIEthernetRNGAES/DES/
TDES
APM32F445RET711251264582.7~5.544*811216+1312313300LQFP64
APM32F445VET711251264892.7~5.544*811216+1612313300LQFP100
APM32F445CET711251264432.7~5.544*811214+912313300LQFP48
APM32F445RCT711225664582.7~5.544*811216+1312313300LQFP64
APM32F445VCT711225664892.7~5.544*811216+1612313300LQFP100
APM32F445CCT711225664432.7~5.544*811214+912313300LQFP48
APM32F446RGT71121024128582.7~5.544*811216+1312313300LQFP64
APM32F446VGT71121024128892.7~5.544*811216+1612313300LQFP100


Block Diagram

Documentation

Format Size
APM32F446 Datasheet Data Sheet V1.1 pdf 3.2 MB January 13, 2026
APM32F445 Datasheet Data Sheet V1.1 pdf 3.48 MB January 13, 2026

Design Resources

Software Development Tools

Format Size
APM32F445_446_SDK SDK V1.0.0 zip 20.78 MB February 27, 2026
APM32F445_446_DFP Pack Pack V1.0.0 pack 1.83 MB February 27, 2026

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