Document
STM32F103x8 STM32F103xB
Medium-density performance line Arm®-based 32-bit MCU with 64 or 128 KB Flash, USB, CAN, 7 timers, 2 ADCs, 9 com. interfaces
Datasheet - production data
Features
Includes ST state-of-the-art patented technology • Arm® 32-bit Cortex®-M3 CPU core
– 72 MHz maximum frequency, 1.25 DMIPS/MHz (Dhrystone 2.1) performance at 0 wait state memory access
– Single-cycle multiplication and hardware division
• Memories – 64 or 128 Kbytes of Flash memory – 20 Kbytes of SRAM
• Clock, reset and supply management – 2.0 to 3.6 V application supply and I/Os – POR, PDR, and programmable voltage detector (PVD) – 4 to 16 MHz crystal oscillator – Internal 8 MHz factory-trimmed RC – Internal 40 kHz RC – PLL for CPU clock – 32 kHz oscillator for RTC with calibration
• Low-power – Sleep, Stop and Standby modes – VBAT supply for RTC and backup registers
• 2x 12-bit, 1 µs A/D converters (up to 16 channels) – Conversion range: 0 to 3.6 V – Dual-sample and hold capability – Temperature sensor
• DMA – 7-channel DMA controller – Peripherals supported: timers, ADC, SPIs, I2Cs and USARTs
• Up to 80 fast I/O ports – 26/37/51/80 I/Os, all mappable on 16 external interrupt vectors and almost all 5 V-tolerant
VFQFPN36 6 × 6 mm UFQFPN48 7 × 7 mm
BGA100 10 × 10 mm UFBGA100 7 x 7 mm
BGA64 5 × 5 mm
LQFP100 14 × 14 mm LQFP64 10 × 10 mm
LQFP48 7 × 7 mm
• Debug mode: – Serial wire debug (SWD) and JTAG interfaces
• Seven timers – Three 16-bit timers, each with up to 4 IC/OC/PWM or pulse counter and quadrature (incremental) encoder input
– 16-bit, motor control PWM timer with dead-time generation and emergency stop
– Two watchdog timers (independent and window)
– SysTick timer 24-bit downcounter
• Up to nine communication interfaces – Up to two I2C interfaces (SMBus/PMBus®) – Up to three USARTs (ISO 7816 interface, LIN, IrDA capability, modem control) – Up to two SPIs (18 Mbit/s) – CAN interface (2.0B Active) – USB 2.0 full-speed interface
• CRC calculation unit, 96-bit unique ID • Packages are ECOPACK®
Table 1. Device summary
Reference
Part number
STM32F103x8
STM32F103C8, STM32F103R8 STM32F103V8, STM32F103T8
STM32F103xB
STM32F103RB STM32F103VB, STM32F103CB, STM32F103TB
September 2023
This is information on a product in full production.
DS5319 Rev 19
1/114
www.st.com
STM32F103x8, STM32F103xB
1
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
2
Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
2.1 Device overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
2.2 Full compatibility throughout the family . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
2.3 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
2.3.1 Arm® Cortex®-M3 core with embedded flash and SRAM . . . . . . . . . . . 14
2.3.2 Embedded flash memory ..