STM32C091RCT6 - 256KB Flash ARM Cortex-M0+ MCU | STMicroelectronics
料号： STM32C091RCT6 ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $4.5 | $4.50 |
| 10 | $4.05 | $40.50 |
| 100 | $3.6 | $360.00 |
| 500 | $3.24 | $1,620.00 |
| 1,000 | $2.88 | $2,880.00 |
STM32C091RCT6 概述
What is an ARM Cortex-M0+ microcontroller? The ARM Cortex-M0+ is the smallest, lowest-power ARM processor designed for embedded systems. It is a 32-bit RISC architecture that offers a balance between performance and energy efficiency, making it ideal for battery-powered and cost-sensitive applications. In the system hierarchy, a microcontroller (MCU) integrates a processor core, memory, and peripherals on a single chip, serving as the 'brain' of embedded systems. The Cortex-M0+ is part of the ARM Cortex-M family, which includes M0, M0+, M3, M4, and M7 cores, each offering different performance and feature levels.
Key features of the STM32C091RCT6 include a 12-bit ADC with up to 16 channels, multiple timers (including advanced-control timers), and a comprehensive set of communication interfaces such as I2C, SPI, USART, and CAN. The device operates from a 2.0V to 3.6V power supply and supports an extended temperature range of -40°C to +85°C. It also includes a real-time clock (RTC), DMA controller, and various low-power modes (Sleep, Stop, and Standby) to optimize energy consumption.
The STM32C091RCT6 is built on ST's advanced 90nm process technology, offering a good balance of performance and power efficiency. The Cortex-M0+ core includes a nested vectored interrupt controller (NVIC) for efficient interrupt handling, and the device supports both JTAG and SWD debugging interfaces. The memory architecture includes a single bank of Flash with read-while-write support, enabling firmware updates without halting the system.
Typical applications include industrial control systems, consumer electronics, IoT devices, smart home automation, and motor control. The rich peripheral set and low power consumption make it a versatile choice for many embedded projects. For example, in an IoT sensor node, the STM32C091RCT6 can manage sensor data acquisition, process it locally, and communicate via UART or SPI to a wireless module.
When designing with this MCU, ensure proper decoupling of the power supply pins with 100nF capacitors placed close to each VDD pin. The VDDA pin should be connected to a clean analog supply, and the VREF+ pin should be decoupled with a 1uF capacitor for accurate ADC conversions. Also, consider the crystal oscillator layout for the HSE (high-speed external) clock to minimize noise and ensure stable operation.
直接替换替代料： STM32C091RCT6 ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
本系列中的变体
可与以下型号直接替换的同系列型号： STM32C091RCT6 （相同外形与封装尺寸） ——差异在于 Core, Debug Interface, Flash Memory, Package, RoHS Status.
快速对比工具——选择替代料号进行并排对比：
STM32C091RCT7
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
STM32C091RBT6
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
STM32C091RCT6TR
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
LPC824M201JHI33
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
ATSAMD21G18A-AU
✅ 直接替换 ⚠️ 规格未核验✓ 有现货
$2.78 / 个
查看数据手册 →STM32C091RCT6 最大额定值与电气特性
| Core | ARM Cortex-M0+ |
| 最大时钟频率 | 48 MHz |
| Flash Memory | 256 KB |
| SRAM | 32 KB |
| 封装 | LQFP64 (10x10 mm) |
| 电源电压 | 2.0V to 3.6V |
| 工作温度 | -40°C to +85°C |
| ADC Resolution | 12-bit |
| ADC Channels | 16 |
| Timers | Advanced-control, general-purpose, basic |
| Communication Interfaces | I2C, SPI, USART, CAN |
| GPIO Pins | 51 |
| Low Power Modes | Sleep, Stop, Standby |
| Debug Interface | JTAG, SWD |
| RoHS 状态 | Compliant |
STM32C091RCT6 引脚配置
| 引脚 1 | VBAT — Backup battery supply for RTC and backup registers |
| 引脚 2 | PC13 — GPIO or RTC tamper pin |
| 引脚 3 | PC14 — GPIO or OSC32_IN |
| 引脚 4 | PC15 — GPIO or OSC32_OUT |
| 引脚 5 | PF0 — GPIO or OSC_IN |
| 引脚 6 | PF1 — GPIO or OSC_OUT |
| 引脚 7 | NRST — Reset pin (active low) |
| 引脚 8 | VSSA — Analog ground |
| 引脚 9 | VDDA — Analog power supply |
| 引脚 10 | PA0 — GPIO or ADC input |
| 引脚 11 | PA1 — GPIO or ADC input |
| 引脚 12 | PA2 — GPIO or USART2_TX |
| 引脚 13 | PA3 — GPIO or USART2_RX |
| 引脚 14 | PA4 — GPIO or SPI1_NSS |
| 引脚 15 | PA5 — GPIO or SPI1_SCK |
| 引脚 16 | PA6 — GPIO or SPI1_MISO |
| 引脚 17 | PA7 — GPIO or SPI1_MOSI |
| 引脚 18 | PB0 — GPIO or ADC input |
| 引脚 19 | PB1 — GPIO or ADC input |
| 引脚 20 | PB2 — GPIO or BOOT1 |
| 引脚 21 | PB10 — GPIO or I2C2_SCL |
| 引脚 22 | PB11 — GPIO or I2C2_SDA |
| 引脚 23 | VSS — Ground |
| 引脚 24 | VDD — Power supply |
| 引脚 25 | PB12 — GPIO or SPI2_NSS |
| 引脚 26 | PB13 — GPIO or SPI2_SCK |
| 引脚 27 | PB14 — GPIO or SPI2_MISO |
| 引脚 28 | PB15 — GPIO or SPI2_MOSI |
| 引脚 29 | PA8 — GPIO or MCO |
| 引脚 30 | PA9 — GPIO or USART1_TX |
| 引脚 31 | PA10 — GPIO or USART1_RX |
| 引脚 32 | PA11 — GPIO or USB_DM (if USB available) |
| 引脚 33 | PA12 — GPIO or USB_DP (if USB available) |
| 引脚 34 | PA13 — GPIO or SWDIO |
| 引脚 35 | PA14 — GPIO or SWCLK |
| 引脚 36 | PA15 — GPIO or JTDI |
| 引脚 37 | PB3 — GPIO or JTDO |
| 引脚 38 | PB4 — GPIO or NJTRST |
| 引脚 39 | PB5 — GPIO or I2C1_SMBA |
| 引脚 40 | PB6 — GPIO or I2C1_SCL |
| 引脚 41 | PB7 — GPIO or I2C1_SDA |
| 引脚 42 | BOOT0 — Boot mode selection |
| 引脚 43 | PB8 — GPIO or CAN_RX |
| 引脚 44 | PB9 — GPIO or CAN_TX |
| 引脚 45 | VSS — Ground |
| 引脚 46 | VDD — Power supply |
| 引脚 47 | PC0 — GPIO or ADC input |
| 引脚 48 | PC1 — GPIO or ADC input |
| 引脚 49 | PC2 — GPIO or ADC input |
| 引脚 50 | PC3 — GPIO or ADC input |
| 引脚 51 | PC4 — GPIO or ADC input |
| 引脚 52 | PC5 — GPIO or ADC input |
| 引脚 53 | PB0 — GPIO or ADC input |
| 引脚 54 | PB1 — GPIO or ADC input |
| 引脚 55 | PC6 — GPIO or TIM3_CH1 |
| 引脚 56 | PC7 — GPIO or TIM3_CH2 |
| 引脚 57 | PC8 — GPIO or TIM3_CH3 |
| 引脚 58 | PC9 — GPIO or TIM3_CH4 |
| 引脚 59 | PA0 — GPIO or TIM2_CH1 |
| 引脚 60 | PA1 — GPIO or TIM2_CH2 |
| 引脚 61 | PA2 — GPIO or TIM2_CH3 |
| 引脚 62 | PA3 — GPIO or TIM2_CH4 |
| 引脚 63 | VSS — Ground |
| 引脚 64 | VDD — Power supply |
典型应用
STM32C091RCT6 适用于 6 应用s: Industrial Control Systems, IoT Devices, Consumer Electronics, Smart Home Automation, Motor Control, Medical Devices.
Industrial Control Systems
The STM32C091RCT6 is well-suited for industrial control systems due to its robust peripheral set, including multiple timers, ADC, and CAN interface. Its 48 MHz Cortex-M0+ core provides sufficient processing power for real-time control loops, while the low-power modes help reduce energy consumption in always-on systems. The device can interface with sensors, actuators, and communication buses, making it a versatile choice for PLCs, motor drives, and process control equipment. The wide operating temperature range (-40°C to +85°C) ensures reliable operation in harsh industrial environments. Additionally, the CAN interface enables seamless integration into industrial networks, allowing multiple controllers to communicate over a robust, noise-immune bus. The 12-bit ADC with 16 channels can sample multiple analog signals, such as temperature and pressure, for monitoring and feedback. The advanced-control timers can generate precise PWM signals for motor control, and the DMA controller offloads data transfer tasks from the CPU, improving overall system efficiency. With 256 KB of Flash, developers have ample space for complex control algorithms and communication protocols. The STM32C091RCT6 also supports firmware updates via the bootloader, facilitating field upgrades. Overall, its combination of performance, peripherals, and reliability makes it an excellent choice for industrial applications.
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IoT Devices
The STM32C091RCT6 is ideal for IoT devices due to its low power consumption, rich peripheral set, and compact LQFP64 package. The Cortex-M0+ core is energy-efficient, and the multiple low-power modes (Sleep, Stop, Standby) allow the device to conserve battery life when idle. The device can interface with various sensors (temperature, humidity, motion) via I2C or SPI, process the data locally, and transmit it to a gateway or cloud via UART, SPI, or a wireless module. The 12-bit ADC can read analog sensors directly, and the DMA controller enables efficient data transfer without CPU intervention. With 256 KB of Flash, developers can implement complex IoT protocols such as MQTT or CoAP. The wide supply voltage range (2.0V to 3.6V) allows operation from two AA batteries or a single Li-ion cell. The STM32C091RCT6 also supports secure boot and firmware updates, which are critical for IoT security. Its small footprint and low cost make it suitable for mass-produced smart home devices, wearables, and environmental monitoring nodes. The CAN interface, while not typical for IoT, can be useful in industrial IoT (IIoT) applications where legacy CAN networks are present. Overall, the STM32C091RCT6 provides a balanced combination of performance, power efficiency, and connectivity for IoT solutions.
推荐
Consumer Electronics
The STM32C091RCT6 is a cost-effective solution for consumer electronics such as smart appliances, remote controls, and gaming peripherals. Its 48 MHz Cortex-M0+ core handles user interface tasks, sensor input, and communication protocols efficiently. The device includes a variety of timers for generating PWM signals for LED dimming or buzzer control, and the ADC can read analog inputs like potentiometers or touch sensors. The low-power modes extend battery life in portable devices, and the wide supply voltage range accommodates various power sources. The LQFP64 package is suitable for compact PCB designs, and the 256 KB Flash provides ample space for firmware features. The STM32C091RCT6 also supports USB (if available) for connectivity to PCs or chargers, though the exact USB support is not specified in the available data. For consumer products, the device's reliability and long-term availability are important, and STMicroelectronics is a well-established manufacturer. The CAN interface is not typically needed in consumer electronics, but it does not hinder the device's use. Overall, the STM32C091RCT6 offers a good balance of features and cost for consumer applications.
推荐
Smart Home Automation
The STM32C091RCT6 is well-suited for smart home automation hubs and nodes. Its low power consumption and multiple communication interfaces (I2C, SPI, USART, CAN) allow it to interface with various smart home protocols such as Zigbee, Z-Wave, or proprietary RF modules. The device can control lighting, HVAC, and security systems by processing sensor data and executing automation rules. The 12-bit ADC can read analog sensors like light or temperature, and the timers can generate PWM for dimming lights or controlling motorized blinds. The low-power modes enable battery-powered sensors to operate for years. The 256 KB Flash provides ample space for complex automation logic and over-the-air (OTA) updates. The STM32C091RCT6 can act as a central controller or a peripheral node in a mesh network. Its wide operating temperature range makes it suitable for installation in attics or garages. The CAN interface, while not common in smart home, can be used in wired home automation systems. Overall, the STM32C091RCT6 offers the performance and connectivity needed for modern smart home applications.
推荐
Motor Control
The STM32C091RCT6 is an excellent choice for motor control applications, including brushless DC (BLDC) motors, stepper motors, and AC induction motors. Its advanced-control timers can generate complementary PWM signals with dead-time insertion, which is essential for driving H-bridges or three-phase inverters. The 12-bit ADC can sample motor currents and voltages for closed-loop control, and the device's 48 MHz clock provides sufficient computational power for real-time control algorithms like FOC (Field-Oriented Control). The CAN interface enables communication with motor drives in industrial networks, allowing for remote monitoring and control. The device's low-power modes can reduce energy consumption when the motor is idle. The 256 KB Flash allows for storing complex control algorithms and diagnostic routines. The STM32C091RCT6 also includes fault protection features, such as break inputs on timers, which can quickly shut down the motor in case of overcurrent or overvoltage. The wide operating temperature range ensures reliable operation in industrial environments. Overall, the STM32C091RCT6 provides the necessary peripherals and performance for sophisticated motor control systems.
推荐
Medical Devices
The STM32C091RCT6 can be used in medical devices such as patient monitors, infusion pumps, and diagnostic equipment. Its low power consumption is beneficial for portable or battery-operated devices, and its rich peripheral set allows for interfacing with various sensors (e.g., heart rate, blood pressure, temperature). The 12-bit ADC provides accurate analog signal acquisition, and the timers can generate precise timing for measurement or control. The device's reliability and long-term availability are critical in medical applications, and STMicroelectronics is a reputable manufacturer. The STM32C091RCT6 supports secure communication protocols, which is important for patient data privacy. The 256 KB Flash allows for storing complex algorithms and patient data logs. The device operates over a wide temperature range, making it suitable for various clinical environments. The CAN interface can be used for networking medical devices in a hospital setting. However, for medical devices, additional certifications (e.g., IEC 60601) may be required, and the STM32C091RCT6 is not specifically certified for medical use. Designers must ensure the overall system meets regulatory requirements. Overall, the STM32C091RCT6 offers the performance and features needed for many medical applications.
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推荐产品汇总
工程参考数据： STM32C091RCT6 ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | STM32C091RCT7 | STM32C091RBT6 | LPC824M201JHI33 | ATSAMD21G18A-AU |
|---|---|---|---|---|---|
| Package | LQFP64 | LQFP64 | LQFP64 | LQFP64 | LQFP64 |
| Brand | STMicroelectronics | STMicroelectronics | STMicroelectronics | NXP Semiconductors | Microchip Technology |
| Core | ARM Cortex-M0+ | ARM Cortex-M0+ | ARM Cortex-M0+ | ARM Cortex-M0+ | ARM Cortex-M0+ |
| Max Clock Frequency | 48 MHz | 48 MHz | 48 MHz | 30 MHz | 48 MHz |
| Flash Memory | 256 KB | 256 KB | 128 KB | 32 KB | 256 KB |
| SRAM | 32 KB | 32 KB | 32 KB | 8 KB | 32 KB |
| ADC Resolution | 12-bit | 12-bit | 12-bit | 12-bit | 12-bit |
| CAN Interface | Yes | Yes | Yes | No | No |
| Supply Voltage Range | 2.0V to 3.6V | 2.0V to 3.6V | 2.0V to 3.6V | 1.8V to 3.6V | 1.62V to 3.63V |
关键差异点
- Larger Flash memory (256 KB) compared to some alternatives （对比 LPC824M201JHI33)
- Integrated CAN interface （对比 ATSAMD21G18A-AU)
- Higher maximum clock frequency than some alternatives （对比 LPC824M201JHI33)
设计说明
Decouple each VDD pin with a 100nF ceramic capacitor placed as close to the pin as possible. Additionally, add a 4.7uF bulk capacitor on the main power rail. For VDDA, use a 1uF capacitor and a 10nF capacitor in parallel to filter high-frequency noise. Ensure the ground connections are low-impedance to avoid voltage drops.
For the HSE crystal oscillator, place the crystal and load capacitors close to the OSC_IN and OSC_OUT pins, and keep the trace lengths short and symmetrical. Avoid routing high-speed signals near the crystal to prevent noise coupling. Use a ground plane under the crystal area to reduce parasitic capacitance.
Do not leave the BOOT0 pin floating; connect it to ground through a resistor to ensure boot from Flash. Also, ensure that the NRST pin is properly pulled up with a 100nF capacitor to ground for reliable reset. When using the ADC, ensure that the VDDA and VREF+ pins are clean and properly decoupled to avoid inaccurate readings.
合规信息
RoHS compliant per STMicroelectronics product page. Not AEC-Q100 qualified; for automotive, consider STM32C091RCT7 if it is AEC-Q100 qualified.
