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The APM32F425/427 series is a high-performance industrial MCU running at up to 240 MHz. It provides up to 1 MB Flash and 448 KB SRAM, along with high-speed ADCs, DACs, and multiple communication interfaces, including Ethernet, CAN, USB OTG, and an enhanced EMMC interface for external memory or FPGA connectivity. The APM32F425 also features zero-wait-state Flash for faster real-time program execution. Designed for demanding industrial applications, this series is ideal for PLCs, servo drives, drones, robotics, energy storage BMS, and more.

Packaging Roadmap

Performance

System

Arm^® Cortex^®-M4F
Operating frequency: 240 MHz
16-channel DMA
Supports FPU/DSP

Memory

Flash: 1024 KB
SRAM: 448 KB/192 KB + 4 KB
EMMC: Supports external memory expansion

Power Management

Operating voltage: 1.8~3.6V
Supports POR/PDR/BOR
Supports programmable voltage detector (PVD)

Timers

16-bit advanced timers: 2
16/32-bit general-purpose timers: 6/4
16-bit basic timers: 2
Watchdog timers: 2
24-bit SysTick: 1

Analog Peripherals

12-bit ADCs: 3, External channels: 24
12-bit DACs: 2

I/O

Up to 114 I/Os
All I/O are mapped to external interrupt vectors

Communication Interfaces

USART/UART: 4 + 2
I²C: 3
SPI: 3
QSPI: 1
CAN: 2
USB OTG_FS: 2
SDIO: 1
Ethernet MAC: 1

Security

RNG
96-bit unique device ID

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Compare	Part No.	Core	Frequency(MHz)	FLASH(KB)	SRAM(KB)	FPU	I/Os	Voltage(V)	Package	GPTMR(16bit)	GPTMR(32bit)	Advanced TMR(16bit)	Basic TMR	Systick(24bit)	IWDT	WWDT	RTC	ADC 12-bit Cell	ADC 12-bit Channels	DAC 12-bit Cell	DAC 12-bit Channels	Analog Comparator	TSC (Channels)	SPI	QSPI	I2S	I2C	U(S)ART	CAN	SDIO	USB Device	CEC	USB OTG_FS	USB OTG_HS	SMC	DCI	DMC	Ethernet	RNG	AES/DES/ TDES	BN/ SM3/SM4

Block Diagram

Documentation

Title	Type	Version	Format	Size	Update Date
APM32F425xG_F427xG Datasheet	Data Sheet	V1.1	pdf	3.04 MB	August 27, 2025
APM32F425xG_F427xG User Manual	User Manual	V1.0	pdf	9.67 MB	August 05, 2025
AN1157_APM32F4xx_SDK Quick Start Guide	Application Note	V1.0	pdf	1.25 MB	July 15, 2025
APM32F427 TinyBoard Schematic Diagram	Development Board Schematic	V1.0	pdf	154.6 KB	August 01, 2025
APM32F427ZG TinyBoard User Manual	Development Board Manual	V1.0	pdf	795.45 KB	August 08, 2025

Design Resources

Hardware Development Tools

Title	Type	Product
APM32F427ZG TINY Board	Development Board

Software Development Tools

Title	Type	Version	Format	Size	Update Date
APM32F4xx_DAL_SDK	SDKs	V1.3.0	zip	106.7 MB	July 21, 2025
APM32F4xx_DFP Pack	SDKs	V1.0.8	pack	7.05 MB	May 06, 2025
APM32F4xx_SDK	SDKs	V1.5.0	zip	58.39 MB	May 06, 2025

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Packaging Roadmap

Performance

System

Memory

Power Management

Timers

Analog Peripherals

I/O

Communication Interfaces

Security

Selection Tools

Core

Frequency(MHz)

FLASH(KB)

SRAM(KB)

FPU

I/Os

Voltage(V)

Package

GPTMR(16bit)

GPTMR(32bit)

Advanced TMR(16bit)

Basic TMR

Systick(24bit)

IWDT

WWDT

RTC

ADC 12-bit Cell

ADC 12-bit Channels

DAC 12-bit Cell

DAC 12-bit Channels

Analog Comparator

TSC (Channels)

SPI

QSPI

I2S

I2C

U(S)ART

CAN

SDIO

USB Device

CEC

USB OTG_FS

USB OTG_HS

SMC

DCI

DMC

Ethernet

RNG

AES/DES/ TDES

BN/ SM3/SM4