Overview
The STM32F302CBT7 is a microcontroller from the STM32F302xB/STM32F302xC family, manufactured by STMicroelectronics. It is based on the high-performance ARM® Cortex®-M4 32-bit RISC core with a floating point unit (FPU), operating at a frequency of up to 72 MHz. This microcontroller integrates a memory protection unit (MPU), an embedded trace macrocell (ETM), and high-speed embedded memories including up to 256 Kbytes of Flash memory and up to 40 Kbytes of SRAM. The device is designed for a wide range of applications, offering advanced peripherals and communication interfaces, along with comprehensive power-saving modes for low-power applications.
Key Specifications
| Parameter | Specification |
|---|---|
| Core | ARM® Cortex®-M4 32-bit CPU with FPU (72 MHz max) |
| Flash Memory | 128 to 256 Kbytes |
| SRAM | Up to 40 Kbytes |
| ADCs | Two fast 12-bit ADCs (5 Msps), up to 17 channels |
| DAC | One 12-bit DAC channel |
| Comparators | Four fast rail-to-rail analog comparators |
| Operational Amplifiers | Two operational amplifiers in PGA mode |
| Timers | Up to 11 timers, including one 32-bit timer and multiple 16-bit timers |
| Communication Interfaces | CAN, two I2C, up to five USART/UARTs, up to three SPIs, USB 2.0 full speed |
| Operating Voltage | 2.0 to 3.6 V |
| Operating Temperature | -40 to +105 °C |
| Package | LQFP 48 7x7x1.4 mm |
Key Features
- High-performance ARM® Cortex®-M4 32-bit CPU with FPU, single-cycle multiplication and HW division, DSP instruction, and MPU.
- High-speed embedded memories: up to 256 Kbytes of Flash memory and up to 40 Kbytes of SRAM.
- Advanced peripherals: two fast 12-bit ADCs, one 12-bit DAC channel, four fast rail-to-rail analog comparators, and two operational amplifiers.
- Comprehensive set of timers: one 32-bit timer, multiple 16-bit timers, and advanced motor control timers.
- Standard and advanced communication interfaces: CAN, I2C, USART/UART, SPI, and USB 2.0 full speed.
- Low-power modes: Sleep, Stop, and Standby, with VBAT supply for RTC and backup registers.
- Clock management: 4 to 32 MHz crystal oscillator, 32 kHz oscillator for RTC, internal 8 MHz RC with x 16 PLL option, and internal 40 kHz oscillator.
- Up to 87 fast I/Os, all mappable on external interrupt vectors, with several 5 V-tolerant I/Os.
- 12-channel DMA controller and interconnect matrix.
- Up to 24 capacitive sensing channels supporting touchkey, linear, and rotary touch sensors.
Applications
The STM32F302CBT7 is suitable for a wide range of applications, including:
- Industrial automation and control systems.
- Medical devices requiring precise analog and digital signal processing.
- Automotive systems, particularly those needing advanced motor control and communication interfaces.
- Consumer electronics, such as audio and video devices, benefiting from the I2S and USB interfaces.
- IoT devices that require low power consumption and advanced peripherals.
Q & A
- What is the core architecture of the STM32F302CBT7?
The STM32F302CBT7 is based on the ARM® Cortex®-M4 32-bit RISC core with a floating point unit (FPU), operating at up to 72 MHz.
- How much Flash and SRAM memory does the STM32F302CBT7 have?
The device has up to 256 Kbytes of Flash memory and up to 40 Kbytes of SRAM.
- What are the key analog peripherals of the STM32F302CBT7?
The device features two fast 12-bit ADCs, one 12-bit DAC channel, four fast rail-to-rail analog comparators, and two operational amplifiers.
- What communication interfaces are available on the STM32F302CBT7?
The device includes CAN, two I2C, up to five USART/UARTs, up to three SPIs, and a USB 2.0 full speed interface.
- What are the operating voltage and temperature ranges of the STM32F302CBT7?
The operating voltage range is 2.0 to 3.6 V, and the operating temperature range is -40 to +105 °C.
- What are the low-power modes available on the STM32F302CBT7?
The device supports Sleep, Stop, and Standby low-power modes, with VBAT supply for RTC and backup registers.
- How many I/Os does the STM32F302CBT7 have, and what are their characteristics?
The device has up to 87 fast I/Os, all mappable on external interrupt vectors, with several 5 V-tolerant I/Os.
- What is the package type and size of the STM32F302CBT7?
The device is available in an LQFP 48 7x7x1.4 mm package.
- Does the STM32F302CBT7 support capacitive sensing?
Yes, the device supports up to 24 capacitive sensing channels for touchkey, linear, and rotary touch sensors.
- What is the role of the DMA controller in the STM32F302CBT7?
The 12-channel DMA controller manages data transfer between peripherals and memory, reducing the load on the CPU.
