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Mainstream Performance line, ARM Cortex-M3 MCU with 128 Kbytes Flash, 72 MHz CPU, motor control, USB and CAN
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The STM32F103xx medium-density performance line family incorporates the high-performance ARM Cortex™-M3 32-bit RISC core operating at a 72 MHz frequency, high-speed embedded memories (Flash memory up to 128 Kbytes and SRAM up to 20 Kbytes), and an extensive range of enhanced I/Os and peripherals connected to two APB buses. All devices offer two 12-bit ADCs, three general purpose 16-bit timers plus one PWM timer, as well as standard and advanced communication interfaces: up to two I2Cs and SPIs, three USARTs, an USB and a CAN.

The devices operate from a 2.0 to 3.6 V power supply. They are available in both the –40 to +85 °C temperature range and the –40 to +105 °C extended temperature range. A comprehensive set of power-saving mode allows the design of low-power applications.

The STM32F103xx medium-density performance line family includes devices in six different package types: from 36 pins to 100 pins. Depending on the device chosen, different sets of peripherals are included, the description below gives an overview of the complete range of peripherals proposed in this family.

These features make the STM32F103xx medium-density performance line microcontroller family suitable for a wide range of applications such as motor drives, application control, medical and handheld equipment, PC and gaming peripherals, GPS platforms, industrial applications, PLCs, inverters, printers, scanners, alarm systems, video intercoms, and HVACs.

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Errata Sheet
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Key Features

  • 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
  • 2 x 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
  • Debug mode
  • Serial wire debug (SWD) & JTAG interfaces
  • 7 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
  • 2 watchdog timers (Independent and Window)
  • SysTick timer 24-bit downcounter
  • Up to 9 communication interfaces
  • Up to 2 x I2C interfaces (SMBus/PMBus)
  • Up to 3 USARTs (ISO 7816 interface, LIN, IrDA capability, modem control)
  • Up to 2 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®

Design Resources


Technical Documentation

Product Specifications

Description Version Size
DS5319: Medium-density performance line ARM-based 32-bit MCU with 64 or 128 KB Flash, USB, CAN, 7 timers, 2 ADCs, 9 com. interfaces
16.0 1,658 KB

Application Notes

Description Version Size
AN1181: Electrostatic discharge sensitivity measurement
1.4 59 KB
AN1709: EMC design guide for ST microcontrollers
1.7 657 KB
AN2586: Getting started with STM32F10xxx hardware development
7.0 416 KB
AN2604: STM32F101xx and STM32F103xx RTC calibration
1.3 133 KB
AN2606: STM32 microcontroller system memory boot mode
18.0 1,811 KB
AN2639: Soldering recommendations and package information for Lead-free ECOPACK microcontrollers
3.2 448 KB
AN2776: How to migrate from STM32F10xxx FWLib V1.0 to V2.0
1.2 163 KB
AN2799: Measuring mains power consumption with the STM32x and STPM01
1.1 376 KB
AN2834: How to get the best ADC accuracy in STM32Fx Series and STM32L1 Series devices
2.0 846 KB
AN2867: Oscillator design guide for STM8S, STM8A, and STM32F1 microcontrollers
6.1 277 KB
AN2945: STM8S and STM32™ MCUs: a consistent 8/32-bit product line for painless migration
1.2 213 KB
AN3070: Managing the Driver Enable signal for RS-485 and IO-Link communications with the STM32™’s USART
1.2 191 KB
AN3095: STEVAL-ISV002V1, STEVAL-ISV002V2 3 kW grid-connected PV system, based on the STM32F103xx
3.0 3,676 KB
AN3108: STLM75 firmware library for the STM32F10x
1.1 786 KB
AN3126: Audio and waveform generation using the DAC in STM32 microcontroller families
1.1 648 KB
AN3128: STM32 embedded graphic objects/touchscreen library
5.1 4,400 KB
AN3155: USART protocol used in the STM32 bootloader
6.0 1,157 KB
AN3166: How to migrate from STEVAL-IHP001V2 to STEVAL-IHP001V3
1.0 1,382 KB
AN3307: Guidelines for obtaining IEC 60335 Class B certification for any STM32 application
4.0 431 KB
AN3364: Migration and compatibility guidelines for STM32 microcontroller applications
3.0 128 KB
AN3422: Migration of microcontroller applications from STM32F1 to STM32L1 series
2.0 312 KB
AN3427: Migrating a microcontroller application from STM32F1 to STM32F2 series
1.1 376 KB
AN3429: STM32 proprietary code protection overview
1.1 60 KB
AN3980: STM32 firmware library for dSPIN L6470
1.1 787 KB
AN4013: STM32F0, STM32F1, STM32F2, STM32F4, STM32L1 series, STM32F30xC/Bx, STM32F358xC, STM32F37x, timer overview
3.0 407 KB
AN4070: 250 W grid connected microinverter
1.0 4,851 KB
AN4076: Two or three shunt resistor based current sensing circuit design in 3-phase inverters
1.2 1,199 KB
AN4088: Migrating from STM32F1 to STM32F0
2.0 1,127 KB
AN4228: Migrating from STM32F1 to STM32F3 microcontrollers
3.0 882 KB
AN4229: How to implement a vocoder solution using STM32 microcontrollers
1.0 467 KB

Technical Notes & Articles

Description Version Size
TN0067: STM32F101xx and STM32F103xx medium-density devices: upgrading your toolchain to V5.20 of IAR EWARM
2.0 51 KB
TN0516: Overview of the STM32F0x/F100xx/F103xx and STM32F2xx/F30x/F4xx MCUs PMSM single/dual FOC SDK V4.0
4.0 286 KB
TN0830: How to use EWARM 6.2x with projects built with EWARM 6.1 and previous versions
1.1 97 KB

User Manual

Description Version Size
UM0585: STM32F10x DSP library
2.1 233 KB
UM1561: STEVAL-ISV003V1: firmware user manual
1.0 967 KB
UM1573: ST7540 power line modem firmware stack
1.0 769 KB

Reference Manual

Description Version Size
RM0008: STM32F101xx, STM32F102xx, STM32F103xx, STM32F105xx and STM32F107xx advanced ARM®-based 32-bit MCUs
15.0 12,712 KB

Programming Manual

Description Version Size
PM0056: STM32F10xxx/20xxx/21xxx/L1xxxx Cortex-M3 programming manual
5.0 4,101 KB
PM0075: STM32F10xxx Flash memory microcontrollers
2.0 297 KB

Errata Sheet

Description Version Size
ES096: STM32F101x8/B, STM32F102x8/B and STM32F103x8/B medium-density device limitations
12.0 609 KB

Device Option List

Description Version Size
STM32F103 128 Kbytes - option list
1 KB

HW Model & CAD Libraries

HW Model & CAD Libraries

Description Version Size
STM32 Boundary Scan Description Language (BSDL) files
3.0.0 195 KB
STM32 F1 series IBIS models
309 KB

Presentations & Training Material


Description Version Size
STM32 - 32-bit ARM Cortex-M MCUs
1,755 KB
STM32 and STM8 embedded software solutions
1,771 KB

Related Tools and Software

Related Tools and Software

Part Number Description
ALTIA-GUI Altia DeepScreen for STM32: Graphical user interface (GUI)
AsIDE Includes the SlickEditor, project management, build capability and pre-packaged adaptation for most popular third-party tools
CMX-CANopen CANopen Industrial Automation for STM32, from CMX Systems Inc
CMX-FFS Flash File System for STM32, from CMX Systems Inc
CMX-INet TCP/IP v4 or v6 stack for STM32, from CMX Systems Inc
CMX-MicroNet TCP/IP v4 with small footprint for STM32, from CMX Systems Inc
CMX-RTX Real Time OS for STM32, from CMX Systems Inc
CMX-TCP/IP TCP/IP v4 stack for STM32, from CMX Systems Inc
CMX-Tiny Real Time OS with small footprint for STM32, from CMX Systems Inc
CMX-USBDevice USB Device stack for STM32, from CMX Systems Inc
CMX-USBHost USB Host stack for STM32, from CMX Systems Inc
CoIDE A free and highly-integrated software development environment for ARM Cortex MCUs
CoSmart An intelligent code generation tool, which can detect pin setting conflicts, generate complete source code, IDE projects, chip package figure, pin configuration report and module configuration report through graphical pins configuration
CrossWorks Based on CrossStudio integrated development environment with JTAG Flash download and debug
EXP-FILE Express Logic FileX file system
EXP-RTOS Express Logic ThreadX Real time operating system (RTOS)
EXP-TRACE Express Logic TraceX Graphical finetuning tool
EXP-USB Express Logic USBX USB stack
EmbestIDE Includes project manager, source-code editor, compiler, debugger, ARM instruction set simulator
FREE-RTOS Free Real Time Operating System for STM32 ARM Cortex-M Microcontrollers families
HCC-Bootloaders Storage, USB or Serial Bootloader for STM32, from HCC Embedded
HCC-FFS All Flashs File Systems with fail-safe mechanisms for STM32, from HCC Embedded
HCC-MISRA-TCP/IP TCP/IP v4 or v6 stack for STM32, from HCC Embedded
HCC-USB USB Host & Device stacks for STM32, from HCC Embedded
Hitop5 Universal user interface, IDE and debugger for all Hitex development tools
IAR-EWARM IAR Integrated development environment and optimizing C/C++ compiler for ARM Cortex-M
MDK-ARM MDK-ARM is the complete software development environment for Cortex-M, ARM7, and ARM9 devices
MULTI Integrated development and debug environment for embedded applications using C and C++.
Men-Nucleus-SF Nucleus SmartFit for STM32
NUCLEO-F103RB STM32 Nucleo development board for STM32 F1 series - with STM32F103RBT6 MCU,supports Arduino
ORYX-SSL Oryx CycloneSSL lightweight SSL/TLS implementation
ORYX-TCP Oryx CycloneTCP TCP/IP stack (IPv4, IPv6)
PRT-CANopen CANopen Protocol Stack / Library for STM32
PRT-EtherCat EtherCAT Protocol Stack / Library for STM32
RIDE Raisonance IDE that drives the RLink and Signum JTAGjet in-circuit emulators.
ST-LINK In-circuit debugger and programmer for STM8 and STM32 MCUs; with IAR EWARM and Keil RVMDK and ST toolset
ST-LINK/V2 ST-LINK/V2 in-circuit debugger/programmer for STM8 and STM32
STEVAL-IFN003V1 PMSM FOC motor driver based on the L6230 and STM32F103
STEVAL-IHM022V1 High density dual motor control demonstration board based on the STM32F103ZE microcontroller
STEVAL-IHP002V2 Smartplug system to measure and control AC loads based on the STM32, ST7540 PLM and STPM01
STEVAL-IHP005V1 General purpose power line modem module based on the ST7540 PLM and STM32 microcontroller
STEVAL-ILL015V1 High brightness RGB LED array with LED error detection based on the STP24DP05 and STM32
STEVAL-ILL035V1 Multi-channel LED driver with integrated boost controller for medium, large LCD panel backlight based on LED7708 and STM32F103C6T6A
STEVAL-IPE023V1 USB interface tool for STPMxx family of energy meter ICs
STEVAL-IPP002V1 IEC 61334-5-1 compliant smart meter system for AMI application based on STM32, ST7570 PLM and STPMC1/STPMS1 chipset
STEVAL-ISV013V1 250 W DC-DC solar module demonstration board for distributed photovoltaic architecture
STEVAL-MKI109V2 eMotion: ST MEMS adapters motherboard based on STM32. Compatible with all ST MEMS adapters based on STM32F103
STEVAL-MKI132V1 BlueMotion - BlueTooth motherboard for DIL24 MEMS adapters
STEVAL-PCC009V2 IBU Motor Control & IPS universal interface
STEVAL-PCC009V4 Universal USB to serial bridge demonstration board for motor control applications
STEVAL-PCC015V1 Full speed USB to RS232 bridge
STEVAL-PCC017V1 USB to RS-232 isolated bridge
STM-STUDIO STM Studio run-time variables monitoring and visualization tool for STM8 and STM32 microcontrollers
STM32-CRYP-LIB STM32 cryptographic library (UM0586)
STM32-D/RAIS STM32 MCU daughter board for use with Raisonance REva starter kits
STM32-EMBPI/14 Arduino and Raspberry Pi compliant STM32 Embedded Pi board
STM32-PRIMER Complete Primer ready to use from Raisonance for easy evaluation and development with STM32 MCUs
STM32-PRIMER/LAB Complete EvoPrimer ready-to-use from Raisonance for STM32 standalone programmer & application monitor
STM32-SK/HIT Hitex starter kit for STM32 F1 series Performance and Access Line microcontrollers
STM32-SK/RAIS Raisonance REva starter kit for STM32 MCUs, includes RLink
STM32-WMA/DEC Audio Engine WMA Decoder and Utilities
STM3210B-MCKIT Motor control starter kit for STM32 (128KB flash) Performance and Access Line microcontrollers
STM3210B-PFSTICK Hitex Performance Stick for STM32 (128KB Flash) Performance and Access Line MCUs
STM3210E-EVAL Evaluation board for STM32 F1 series - with STM32F103 MCU
STM3210E-SK/IAR IAR starter kit for STM32 F1 series Performance and Access Line microcontrollers (STM32F103ZE MCU)
STM3210G-SK/KEI Keil starter kit for STM32F103 line (with STM32F103ZG MCU)
STMPRIMER EvoPrimer components to build your own EvoPrimer for easy evaluation and development with STM32 and STM8 MCUs
STSW-MCU005 STM32 and STM8 Flash loader demonstrator (UM0462)
STSW-STM32007 Using the STM32F1x and STM32L1x DMA controller (AN2548)
STSW-STM32008 STM32F10xxx in-application programming using the USART (AN2557)
STSW-STM32009 How to achieve 32-bit timer resolution using the link system in STM32F101xx and STM32F103xx microcontrollers (AN2592)
STSW-STM32010 EEPROM emulation in STM32F101xx and STM32F103xx microcontrollers (AN2594)
STSW-STM32011 Smartcard interface with the STM32F10x and STM32L1xx microcontrollers (AN2598)
STSW-STM32012 STM32F101xx and STM32F103xx low-power modes (AN2629)
STSW-STM32013 STM32F10xxx LCD glass driver firmware (AN2656)
STSW-STM32014 Improving STM32F1x and STM32L1x ADC resolution by oversampling (AN2668)
STSW-STM32015 How to use the high-density STM32F103xx microcontroller to play audio files with an external I2S audio codec (AN2739)
STSW-STM32016 TFT LCD interfacing with the high-density STM32F10xxx FSMC (AN2790)
STSW-STM32017 STM32F10xxx Speex library firmware STM32, StdPeriph Lib, speex, audio (AN2812)
STSW-STM32018 Driving bipolar stepper motors using a medium-density STM32F103xx microcontroller (AN2820)
STSW-STM32019 Clock/calendar implementation on the STM32F10xxx microcontroller RTC (AN2821)
STSW-STM32020 STM32F101xx and STM32F103xx medium- and high-density devices: advanced I2C examples (AN2824)
STSW-STM32021 STM32F10xxx internal RC oscillator (HSI) calibration (AN2868)
STSW-STM32022 Implementing the ADPCM algorithm in high-density STM32F103xx microcontrollers (AN2931)
STSW-STM32023 How to migrate from the STM32F10xxx firmware library V2.0.3 to the STM32F10xxx standard peripheral library V3.0.0 (AN2953)
STSW-STM32024 Getting started with uClinux for STM32F10x high-density devices (AN3012)
STSW-STM32025 Managing the Driver Enable signal for RS-485 and IO-Link communications with the STM32 USART
STSW-STM32027 Communication peripheral FIFO emulation with DMA and DMA timeout in STM32F10x microcontrollers (AN3109)
STSW-STM32028 STM32's ADC modes and their applications (AN3116)
STSW-STM32033 STM32F1xx motor control firmware library for the L6470 dSPIN IC
STSW-STM32047 Implementing receivers for infrared remote control protocols using STM32F1 microcontrollers (AN3174)
STSW-STM32054 STM32F10x standard peripheral library
STSW-STM32056 STM32F1xx motor control firmware for easySPIN L6474
STSW-STM32080 DfuSe USB device firmware upgrade STMicroelectronics extension: contains the demo GUI, debugging GUI, all sources files and the protocol layer (UM0412)
STSW-STM32086 CEC (consumer electronic control) C library using the STM32F101xx, STM32F102xx and STM32F103xx microcontrollers (UM0685)
STSW-STM32093 STM32 TFT-LCD direct drive demonstration firmware (AN3241)
STSW-STM32094 STM32 in-application programming over the I2C bus (AN3078)
STSW-STM32098 STM32 embedded GUI library (AN3128)
STSW-STM32099 STM32 secure firmware upgrade (SFU) overview (AN4023)
STSW-STM32100 STM32 PMSM FOC SDK motor control firmware library (UM1052)
STSW-STM32102 STM32 Virtual COM Port Driver
STSW-STM32103 STM32 Serial Wire Viewer (SWV) and Embedded Trace Macrocell (ETM)capabilities. Examples and technical note.
STSW-STM32121 STM32F10x, STM32L1xx and STM32F3xx USB full speed device library (UM0424)
STSW-STM32127 STM32F10xx, STM32F2xx, STM32F4xx and STM32L1xx I2C Communication peripheral application library (CPAL) (UM1029)
STSW-STM32149 STM32 nRF51 Bluetooth Low Energy (BLE) embedded software
STSW-STM32AN4187 Using CRC peripheral in STM32 family (AN4187)
STVP ST Visual Programmer for programming ST7, STM8 and STM32
STX-PRO/RAIS Unlimited in-circuit debugging/programming tool for STM32, STR7 and STR9
STX-RLINK In-circuit debugger/programmer for STM8, ST7, STM32, STR7 and STR9 microcontrollers
STemWin Professional graphical stack library enabling the building up of Graphical User Interfaces (GUIs) (AN4323)
TAP-KNX-KAIStack KNX home automation for STM8 and STM32, from Tapko Technologies GMBH
TASKINGVX TASKING VX-toolset for ARM based on Altium's Viper C compiler technology
TrueANALYSER A tool that performs advanced test quality measurements. The product performs dynamic execution flow analysis and provides rigorous code coverage measurements.
TrueINSPECTOR A tool that detects potential coding issues at an early stage. The product performs static source code inspection and generates software metrics and code complexity measurements
TrueSTUDIO The premier C/C++ development tool for STM32 development, with its unrivalled feature set and unprecedented integration
TrueVERIFIER Tool for advanced test automation. The product performs source code analysis and auto-generate unit tests that exercise an extensive set of different execution paths
VisualTFT A standalone application used for rapid development of graphical user interfaces for TFT displays. Software generates code for STM32 MCUs. Code is fully compatible with mikroElektronika compilers mikroC, mikroBasic and mikroPascal
WEI-KNX Weinzierl KNX standard communication protocols for the STM32 ARM Cortex-M Microcontrollers families (KNX Stack)
WITT-MW Wittenstein Middleware components (USB, File System, TCP/IP, ...)
WITT-RTOS Wittenstein OpenRTOS, commercial flavor of open source FreeRTOS
WITT-RTOS-SAFE Wittenstein SafeRTOS, safety-certified flavor of open source FreeRTOS
YOG-fRSTL Functional safety Test Libraries from Yogitech for STM32 ARM Cortex-M Microcontrollers families
eCC-CAN CANopen Industrial Automation for STM32, from eCosCentric
eCC-CEE-J Embedded Java virtual machine for STM32, from eCosCentric
eCC-RedBoot Standard bootstrap firmware for STM32, from eCosCentric
eCC-SecureShell Secure Shell daemon SSH-2 for STM32, from eCosCentric
eCC-USB USB Host & Device stacks for STM32, from eCosCentric
eCC-YAFFS NAND Flash File System for STM32, from eCosCentric
eCC-eXtremeDB Embedded in-memory database for STM32, from eCosCentric
emtas-CANopen CANopen Protocol Stack for STM32
mikroBasicPRO A full-featured Basic compiler which makes STM32 development suitable for everyone
mikroCPRO A full-featured ANSI C compiler for STM32 devices. It features an intuitive IDE, powerful compiler with advanced optimizations
mikroPascalPRO A full-featured Pascal compiler for STM32 devices. It has an intuitive IDE with docking support, rich with features, advanced text editor, many available tools, libraries and examples

Publications and Collaterals


Description Version Size
STM32 32-bit MCU family
2,651 KB
STM32 32-bit MCU family (Japanese Version)
222 KB


Description Version Size
Products and solutions for Factory automation and Control
4,504 KB
STM32 Motor control
1.0.0 975 KB

White Paper

Description Version Size
STM32 More Than a Core - Circuit Cellar, Tom Cantrell
1.0 355 KB

Quality & Reliability

Product Certification

Description Version Size
STM32 CAN conformance test authentication sheet
183 KB
VDE Certification for STM32 Class B
1.0 1,310 KB
VDE Certification for STM32 Class B
1.0 1,302 KB

Sample & Buy

Part Number Marketing StatusPackagePacking TypeOperating Temperature (min) Operating Temperature (max) Order From STUnit Price (US$)*
@ 10000
Distributor AvailabilityRoHS Compliance GradeDownload
Material Declaration**
STM32F103RBH6ActiveTFBGA 64 5x5x1.2Tray-4085-2.648Distributor reported inventory date: 2014-07-24
Distributor NameRegionStockMin. order
Newark Element14Order NowAMERICA6400
Farnell Element14Order NowEUROPE31891
STM32F103RBH6TRActiveTFBGA 64 5x5x1.2Tape And Reel-4085-2.648No availability reported, please contact our Sales officeEcopack2-
STM32F103RBT6ActiveLQFP 64 10x10x1.4Tray-4085Free Samples2.648Distributor reported inventory date: 2014-07-24
Distributor NameRegionStockMin. order
ARROWOrder NowEUROPE146700
Farnell Element14Order NowEUROPE9741

(*) Suggested Resale Price per unit (USD) for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office or our Distributors
(**) The Material Declaration forms available on may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.
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