APM32F103VBT6

The APM32F103VBT6 is a 32-bit ARM Cortex-M3 microcontroller by Geehy, pin-to-pin compatible with the STM32F103 series. It features:
- Core: 72 MHz Cortex-M3 with 128 KB Flash, 20 KB SRAM.
- Peripherals: USB 2.0, USART, SPI, I2C, ADC (12-bit, 16-ch), timers, and GPIOs.
- Power: 2.0–3.6V supply, low-power modes.
- Package: LQFP-100.
Ideal for industrial control, consumer electronics, and IoT, it offers cost-effective performance with broad toolchain support (Keil, IAR, GCC). Its compatibility with STM32 simplifies migration.

The APM32F103VBT6 (by Geehy) is compatible with STM32F103VBT6 (by STMicroelectronics). Key equivalents include:
- GD32F103VBT6 (GigaDevice)
- HK32F103VBT6 (Huada Semiconductor)
- CKS32F103VBT6 (CKS)
These are pin-to-pin and software-compatible alternatives with similar ARM Cortex-M3 cores, flash/RAM sizes, and peripherals. Verify datasheets for minor timing or feature differences.

The APM32F103VBT6 is a 32-bit ARM Cortex-M3 microcontroller by Geehy. Key features:
- Core: 72 MHz Cortex-M3
- Memory: 128 KB Flash, 20 KB SRAM
- GPIO: Up to 80 I/O pins
- Timers: 3x 16-bit, 1x 16-bit PWM, 2x watchdog
- ADC: 2x 12-bit (16 ch, 1 μs conv.)
- Communication: 3x USART, 2x SPI, 2x I2C, USB 2.0 FS, CAN 2.0B
- Operating Voltage: 2.0–3.6V
- Packages: LQFP100
- Temp Range: -40°C to +85°C
Pin-compatible with STM32F103, suitable for industrial, consumer, and IoT applications.

The APM32F103VBT6 is a 32-bit ARM Cortex-M3 microcontroller by Geehy.
- Pin Count: 100 pins (LQFP package)
- Key Functions:
- GPIO: Up to 80 general-purpose I/O pins.
- Communication:
- 3× USART, 2× SPI, 2× I2C, 1× USB 2.0, 1× CAN.
- Analog:
- 2× 12-bit ADC (16 channels), 1× 12-bit DAC.
- Timers:
- 4× 16-bit timers, 2× PWM-capable advanced timers.
- Memory:
- 128KB Flash, 20KB SRAM.
- Debug: SWD & JTAG support.
Designed as a drop-in replacement for STM32F103VBT6, it suits industrial and consumer applications.

The APM32F103VBT6 is manufactured by Geehy Semiconductor, a Chinese company specializing in microcontroller units (MCUs) and integrated circuits. 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. The company focuses on consumer electronics, industrial applications, and IoT devices.
Geehy, founded in 2017, has rapidly expanded its presence in the domestic and global semiconductor markets, emphasizing R&D and compatibility with industry-standard MCUs. The APM32F103VBT6 is a Cortex-M3-based MCU, pin-to-pin compatible with the STM32F103 series, targeting similar applications like motor control, embedded systems, and automation.
In short, Geehy is a rising Chinese semiconductor firm competing in the MCU space with a focus on affordability and compatibility.

The APM32F103VBT6, based on Arm Cortex-M3, is widely used in:
1. Industrial Control – PLCs, motor control, automation.
2. Consumer Electronics – Smart home devices, wearables.
3. Medical Devices – Portable monitors, diagnostic tools.
4. Automotive – ECUs, sensors, dashboards.
5. IoT & Wireless – Gateways, sensor nodes.
6. Embedded Systems – HMI, data loggers.
It offers high performance, low power, and rich peripherals (USB, CAN, ADC, etc.), making it versatile for cost-sensitive applications.

The APM32F103VBT6 is packaged in an LQFP-100 (Low-Profile Quad Flat Package) with 100 pins. It has a compact form factor (14×14 mm) and is surface-mountable, suitable for space-constrained applications. The LQFP package ensures good thermal and electrical performance for this ARM Cortex-M3-based microcontroller.