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STMicroelectronics STM32F105VBH6 — Microcontrollers & Processors (MCU / MPU / DSP)

STM32F105VBH6 STM32F1 MCU, ARM Cortex-M3, 72 MHz

MPNSTM32F105VBH6
Active

STMicroelectronics STM32F1 series, STM32F105VBH6, ARM Cortex-M3, 32-Bit Single-Core, 72MHz, 128KB Flash, 64K x 8 SRAM, 100-LFBGA.

$8.5000Ref. price · indicative, final on quote
STMicroelectronics STM32F105VBH6 datasheet (PDF)
Packaging100-LFBGA
RoHSROHS3 Compliant
SeriesSTM32F1
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

STM32F105VBH6 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 size64K x 8
Core size32-Bit Single-Core
PeripheralsDMA, POR, PWM, Voltage Detect, WDT
ConnectivityCANbus, I²C, IrDA, LINbus, SPI, UART/USART, USB OTG
Number of i (O)80
Core processorARM® Cortex®-M3
Case100-LFBGA
Data convertersA/D 16x12b; D/A 2x12b
Program memory size128KB (128K x 8)

Product details

128 KB Flash and 64K x 8 SRAM — firmware headroom for real-time control

The 128 KB Flash (128K x 8) and 64K x 8 SRAM give this MCU enough room for a moderate-sized application stack — think a CANopen node with USB firmware update capability, or a multi-axis stepper controller with a small RTOS. The 64 KB SRAM supports moderate data buffering; if your application needs larger frame buffers or extensive lookup tables, you will want to budget the RAM against your task list early in the design phase.

100-ball BGA — footprint and rework considerations

Housed in a 100-LFBGA (Low-profile Fine-pitch Ball Grid Array), this part is surface-mount only. The BGA package saves board area compared to an LQFP but requires X-ray inspection for solder-joint verification and a rework station with hot-air profile control. The 80 I/O count gives plenty of GPIO for parallel displays, external memory interfaces, or sensor arrays.

STMicroelectronics lists the STM32F105VBH6 as Active.

Frequently asked questions

What are the alternatives to STM32F105VBH6?

A functional peer within the STM32 portfolio is the STM32L151CBU6A, also an ARM Cortex-M3 but clocked at 32 MHz (vs 72 MHz) and with lower power draw. The STM32L151CBU6A has fewer I/O (37 vs 80) and a different peripheral set (no USB OTG, no CAN). It is not a pin-compatible drop-in — the package, pinout, and memory map differ — but it serves as a lower-power, lower-speed alternative for applications that do not need the full 72 MHz throughput or the USB OTG/CAN interfaces.