STM32F1O3CBT6 | ST | 32-bit ARM Cortex-M3 core general-purpose MCU single-chip microcomputer (F1 medium-density performance line)

STM32F103CBT6 

I. Interpretation of model suffixes

STM32F113: F1 series performance sub-series, Cortex-M3 core, up to 72MHz main frequency

C: LQFP-48 package, 48 pins, body 7mm×7 mm, pin spacing 0.5 mm

B: Flash capacity 128KB; SRAM fixed 20KB (the same package C8T6 is 64KB Flash)

T6: Industrial temperature grade, temperature range ‑40 ℃ ~ + 85 ℃, pallet packaging shipment

Appearance: LQFP-48 square chip, 48 pins around; Chip corner oblique cutting notch mark 1 pin, surface silk printing complete model, batch; Without a bottom pad, the PCB layout needs to reserve enough space for pin pads, and the 0.5mm pitch has certain requirements for the PCB process.

Pin points: 37-way GPIO, most support 5V tolerance; It has a SWD debug interface, a BOOT boot configuration pin, and a VBAT RTC backup power pin.

2. Core electrical parameters

form

parameter

Specifications

kernel

ARM Cortex‐M3, 72MHz, Thumb‑2 instruction set

storage

Flash：128KB；SRAM：20KBSTMicroele...

Power supply voltage

2.0V-3.6V, typical 3.3V power supply STMicroele...

GPIO

37 I/O ports, most 5V tolerant

Communication peripherals

3×USART, 2×SPI, 2×I2C, 1×CAN2. 0B, 1×USB Device full-speed interface

Analog peripherals

2-channel 12-bit ADC, 10 channels, conversion rate 1μs

Timer

7-channel timer with advanced control TIM1, supports PWM output, motor control STMicroele...

Operating temperature

- 40°C to + 85° C industrial grade ST Microelectronics...

Debugging method

SWD / JTAG debugging

Comparison of C8T6: The hardware pins are fully compatible, only the Flash is upgraded from 64KB to 128KB, and the SRAM remains unchanged; CBT6 is the first choice for projects with a large amount of code, storing character sets, and multi-protocol projects.

III. Key Features

The ecology is extremely mature, the data, open-source code, and toolchain are perfect, and it is the classic MCU that is most widely used by domestic engineers.

Built-in CAN, USB, can directly do USB device, CAN bus communication, save external chip.

The high-level timer TIM1 supports complementary PWM output, suitable for motor drive and inverter control scenarios.

RTC real-time clock, support external button battery backup, power off save time and backup register data.

Flash 128 KB, suitable for complex business logic, character set storage, IAP online upgrade.

Non-automotive grade devices, without AEC‑ Q100 certification, cannot be used in official automotive projects.

IV. Typical Application Scenarios

Industrial control: IO acquisition module, small motor drive, sensor acquisition terminal, instrumentation

Consumer Electronics: Smart Home, Smart Door Locks, Small Appliance Controllers, LED Control Systems

Communication conversion: USB-CAN, USB-RS485 converter, DTU terminal master

Educational Development: STM32 Learning Board, DIY Projects, Quadcopter Main Controller

Portable devices, simple BMS, data recorders.

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