Release Notes for APM32F4xx SDK

V1.5.4 / 10-15-2026

Main Changes

APM32F4xx_StdPeriphDriver
- Update to version V1.0.6.
Middlewares
- Update USB Device Library to V1.1.9.
Examples
- Update USB Device/OTG examples to adapt to the new USB library (APM32F407 Eval/Mini/Tiny, APM32F411 Tiny, APM32F427 Tiny).
- Added TMR_TMR8Synchro example for APM32F411 Tiny board.

V1.5.3 / 06-16-2026

APM32F4xx_StdPeriphDriver
- FMC driver: perform a clear operation before all PG, SERS, and MERS operations.
- Fixed DMA_ClearStatusFlag function.
- Fixed SYSCFG_ConfigEINTLine function.
- Fixed ETH driver.
Examples
- Moved SystemClockConfig configuration to the main function in all examples.
- APM32F427 tiny board: improved QSPI_ReadWriteDMA example read/write timing to support high-speed communication.
- Fixed USB HS example descriptor error.

V1.5.2 / 12-15-2025

V1.5.1 / 11-24-2025

Middlewares
- Update USB Device Library to V1.1.8.
  - Add a null-pointer check in the USB class deinit function.
Update Keil Pack to V1.0.10.
Fixed some known issues.

V1.5.0 / 30-04-2025

Update pack for version 1.0.4.
Update APM32F4xx_StdPeriphDriver to version 1.0.4.
Added new library user manual.
Added examples support for:
- APM32F407 eval board
- APM32F411 tiny board
- APM32F407 tiny board
- APM32F427 tiny board

V1.4.0 / 31-07-2023

V1.3.0 / 27-03-2023

V1.2.0 / 27-06-2022

V1.1.0 / 24-02-2022

V1.0.0 / 30-09-2021