APM32F103RET6

The APM32F103RET6 is a 32-bit ARM Cortex-M3 microcontroller by Geehy Semiconductor, compatible with STM32F103RET6. It operates at 72 MHz, features 512KB Flash, 64KB SRAM, and includes peripherals like USART, SPI, I2C, USB, CAN, and 12-bit ADCs.
Key highlights:
- Core: Cortex-M3 with up to 72 MHz clock speed.
- Memory: 512KB Flash, 64KB SRAM.
- Peripherals: 3 USARTs, 2 SPIs, 2 I2Cs, USB 2.0, CAN 2.0B, 3 ADCs (12-bit).
- GPIO: Up to 51 configurable I/O pins.
- Packaging: LQFP64.
Ideal for industrial control, consumer electronics, and IoT, it offers pin-to-pin compatibility with STM32F103, easing migration. Low power modes enhance energy efficiency.
For detailed specs, refer to Geehy’s datasheet.

The APM32F103RET6 is a 32-bit ARM Cortex-M3 MCU by Geehy. Key features:
- Core: 72 MHz max frequency, single-cycle hardware multiplier.
- Memory: 512 KB Flash, 64 KB SRAM.
- Peripherals:
- 3× USART, 2× UART, 2× I2C, 3× SPI (2 with I2S).
- 1× USB 2.0 FS, 1× CAN 2.0B.
- 2× 12-bit ADC (1 μs conversion, 16 ch).
- 2× 12-bit DAC.
- 16× PWM channels (4× timers).
- GPIO: Up to 51 I/O pins.
- Packages: LQFP64.
- Operating Conditions: 2.0–3.6V, -40°C to +85°C.
Pin-compatible with STM32F103RET6, suitable for cost-sensitive applications.

The APM32F103RET6 is a 32-bit ARM Cortex-M3 microcontroller with:
- Pin Count: 64 pins (LQFP package)
- Key Functions:
- CPU: 72 MHz max frequency
- Memory: 512 KB Flash, 64 KB SRAM
- GPIO: Up to 51 multifunctional I/O pins
- Peripherals:
- 3× USART, 2× SPI, 2× I2C
- 3× 16-bit timers, 1× PWM advanced timer
- 2× 12-bit ADC (16 channels)
- USB 2.0 full-speed, CAN 2.0B
- Power: 2.0–3.6V supply
It is pin-compatible with STM32F103RET6, suitable for industrial and consumer applications.

The APM32F103RET6 is manufactured by Geehy Semiconductor, a Chinese company specializing in microcontroller units (MCUs) and embedded solutions. Geehy is known for producing ARM Cortex-M-based MCUs, including the APM32 series, which are often positioned as cost-effective alternatives to STMicroelectronics' STM32 lineup.
Founded in 2017 and headquartered in Zhuhai, China, Geehy focuses on R&D for industrial, consumer, and IoT applications. The APM32F103RET6, in particular, is a drop-in replacement for the STM32F103RET6, offering similar specifications like a 72 MHz Cortex-M3 core and 512KB Flash.
Geehy is a growing player in the semiconductor industry, emphasizing compatibility, performance, and affordability.

The APM32F103RET6, based on Arm Cortex-M3, is widely used in:
- Industrial Control: PLCs, motor control, HMI.
- Consumer Electronics: Smart home devices, wearables.
- Automotive: Body control, sensors, lighting.
- Medical: Portable monitors, diagnostic tools.
- IoT: Edge nodes, wireless modules.
- Embedded Systems: Data loggers, power management.
It offers high performance, low power, and rich peripherals (USB, CAN, ADC, etc.), making it versatile for cost-sensitive applications.

The APM32F103RET6 is packaged in an LQFP-64 (Low-Profile Quad Flat Package) with 64 pins. It has a compact form factor (10x10mm) and is surface-mountable, suitable for space-constrained applications. This package type supports industrial-grade temperature ranges and is commonly used in embedded systems.