The STM32F103x8 and STM32F103xB are medium-density performance line ARM-based 32-bit MCUs with 64 or 128 KB Flash, USB, CAN, 7 timers, 2 ADCs, and 9 communication interfaces.
This document is a datasheet for the STM32F103x8 and STM32F103xB series of medium-density performance line ARM-based 32-bit microcontrollers. The devices feature an ARM Cortex-M3 CPU core operating at up to 72 MHz, with 64 or 128 KB of Flash memory and 20 KB of SRAM. Key peripherals include two 12-bit ADCs, seven timers, and up to nine communication interfaces such as I2C, USART, SPI, CAN, and USB 2.0 full-speed.
| CPU Core | ARM 32-bit Cortex-M3 |
|---|---|
| Maximum Frequency | 72 MHz |
| Flash Memory | 64 or 128 Kbytes |
| SRAM | 20 Kbytes |
| ADC Resolution | 12-bit |
| ADC Channels | Up to 16 |
| Timers | 7 |
| Communication Interfaces | Up to 9 |
| Operating Voltage | 2.0 to 3.6 V |
The maximum frequency is 72 MHz.
The devices have 64 or 128 Kbytes of Flash and 20 Kbytes of SRAM.
Yes, it includes a USB 2.0 full-speed interface.