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STMicroelectronics STM32F103VBI6 — Microcontrollers & Processors (MCU / MPU / DSP)

ST STM32F103VBI6 ARM Cortex-M3 MCU, 72 MHz, 128 KB Flash

MPNSTM32F103VBI6
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STMicroelectronics STM32F103VBI6, STM32F1 series, 32-bit ARM Cortex-M3 MCU, 72 MHz, 128 KB Flash, 20 KB RAM, 80 I/O, 100-UFBGA (7x7 mm), -40 to 85 °C.

$4.6139Ref. price · indicative, final on quote
STMicroelectronics STM32F103VBI6 datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

STM32F103VBI6 specifications
ParameterValue
SeriesSTM32F1
MountingSurface Mount
Oscillator typeInternal
Program memory typeFLASH
Voltage - supply (Vcc (Vdd))2V ~ 3.6V
Operating temperature-40°C ~ 85°C (TA)
Speed72MHz
PackageTray
RAM size20K x 8
Core size32-Bit Single-Core
PeripheralsDMA, Motor Control PWM, PDR, POR, PVD, PWM, Temp Sensor, WDT
ConnectivityCANbus, I2C, IrDA, LINbus, SPI, UART/USART, USB
Number of i (O)80
Core processorARM® Cortex®-M3
Case100-UFBGA
Data convertersA/D 16x12b
Program memory size128KB (128K x 8)

Product details

On-chip peripherals include DMA, a motor-control PWM timer, and a temperature sensor. Connectivity covers CAN, USB, I2C, SPI, UART/USART, and LIN — enough to bridge a fieldbus gateway or log data to a USB host without an external PHY. The 16-channel 12-bit ADC samples analog inputs from current-sense resistors or thermistors without an external converter.

Housed in a 100-ball UFBGA measuring 7x7 mm. The compact footprint saves board area compared to an LQFP-100.

Supply range and power management

Operates from 2 V to 3.6 V. Built-in POR, PDR, and PVD supervise the supply.

Frequently asked questions

What is the core speed of STM32F103VBI6?

The ARM Cortex-M3 core runs at 72 MHz, which is the maximum speed for the STM32F103 value line.

What is the Flash and RAM size on this MCU?

It has 128 KB of Flash and 20 KB of RAM — enough for moderate control firmware with a bootloader and a small RTOS.

What temperature range does the STM32F103VBI6 support?

Rated for -40 °C to 85 °C, which covers industrial environments such as factory automation, outdoor telecom, and engine-bay applications.