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STMicroelectronics STM32F103CBT6TR — Microcontrollers & Processors (MCU / MPU / DSP)

STM32F103CBT6TR STM32F1 MCU, 72MHz, 128KB Flash, 48-LQFP

MPNSTM32F103CBT6TR
Active

STMicroelectronics STM32F1 series, ARM Cortex-M3 32-bit MCU, 72MHz, 128KB Flash, 20K x 8 RAM, CAN/USB/I²C/SPI/UART, 37 I/O, 2V-3.6V, -40°C to 85°C, 48-LQFP, Tape & Reel.

$7.0400Ref. price · indicative, final on quote
STMicroelectronics STM32F103CBT6TR datasheet (PDF)
Packaging48-LQFP
RoHSROHS3 Compliant
SeriesSTM32F1
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

STM32F103CBT6TR 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
PackageTape & Reel (TR) Cut Tape (CT)
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)37
Core processorARM® Cortex®-M3
Case48-LQFP
Data convertersA/D 10x12b
Program memory size128KB (128K x 8)

Product details

The STM32F103CBT6TR includes DMA, motor-control PWM, a 10-channel 12-bit ADC, and connectivity for CANbus, USB, I²C, SPI, and multiple UART/USART interfaces. The 48-LQFP package provides 37 I/O in a surface-mount footprint.

The 2V to 3.6V supply range means it runs comfortably on a single 3.3V rail and can tolerate a sagging battery down to 2V without browning out — useful for portable or battery-backed designs.

Peripheral set that differentiates it

Beyond the usual timers and serial interfaces, this part includes a motor-control PWM timer and a CANbus controller — features that push it beyond a general-purpose MCU into the domain of brushless DC motor drives, servo controllers, and automotive-adjacent modules. The 10-channel 12-bit ADC is enough for sensor feedback on a three-phase motor plus a couple of analog inputs. DMA offloads the CPU for high-speed peripheral transfers, keeping the 72 MHz core free for control loops.

It is ROHS3 compliant.

Frequently asked questions

What is the difference between STM32F103CBT6TR and STM32F103CBT6?

The STM32F103CBT6TR is the Tape & Reel packaging variant of the same die — same 72 MHz Cortex-M3, same 128 KB Flash, same 48-LQFP package. The only difference is the shipping medium: Tape & Reel (for automated pick-and-place) versus the tray or tube of the STM32F103CBT6. They are electrically and footprint identical.

What is a good replacement for STM32F103CBT6TR if out of stock?

A functional alternative in the same family is the STM32L151CBU6A, which also uses an ARM Cortex-M3 core and 37 I/O, but runs at 32 MHz and targets lower power — not a direct pin-compatible swap, but a software-compatible migration path if power budget is the priority. For a pin-compatible drop-in, stay within the STM32F103CBT6 series; the STM32F103C8T6 (64 KB Flash) shares the same pinout but less program memory.