STM32F091RBT6 - 48MHz ARM Cortex-M0 MCU 128KB Flash LQFP-64
MPN: STM32F091RBT6 ✓ Hoạt độngSTM32F091RBT6 Tóm tắt
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, volatile and non-volatile memory, and programmable I/O peripherals. The STM32F0 family positions itself as the entry point to ST's Cortex-M0 portfolio, optimized for 8/16-bit replacement by delivering higher performance (48 MHz, 38 DMIPS) at comparable or lower system cost. Within the STM32 taxonomy, the STM32F0 sits below the Cortex-M3/M4 STM32F1/F3 lines and the Cortex-M4/M7 STM32F4 lines; it shares the same STM32 standard peripheral library and STM32CubeMX ecosystem for code portability.
Key features of the STM32F091RBT6 include 128 KB Flash with read-while-write support, 32 KB SRAM, a 12-bit 1 MSPS ADC with up to 16 channels, two 12-bit DAC channels, two I2C, two SPI, four USART, one USB 2.0 Full-Speed, one CAN 2.0B, and one HDMI-CEC interface. Operating voltage spans 2.0 V to 3.6 V, with low-power Run, Sleep, Stop, and Standby modes consuming as little as a few microamperes, plus a real-time clock and battery backup domain.
Architecturally, the Cortex-M0 core delivers 0.9 DMIPS/MHz using Thumb-2 instructions, paired with a single-cycle multiplier and a Nested Vectored Interrupt Controller (NVIC). The device supports serial-wire debug (SWD) and JTAG, and ST's standard HAL/LL drivers in the STM32Cube ecosystem make firmware migration across STM32 families straightforward.
Typical applications include USB HID peripherals, CAN node endpoints in industrial networks, low-cost motor control boards, USB-CDC virtual COM ports, smart sensors, and consumer appliances. The wide operating voltage and integrated CAN make it attractive for both 3.3 V industrial nodes and battery-powered consumer devices.
When designing with this MCU, allocate decoupling capacitance of 100 nF per VDD pin plus a bulk 4.7 uF near the regulator, and ensure VDDA/VREF+ filtering for ADC accuracy. For USB, route the DP/DM pair as a 90 ohm differential and use the dedicated USB power-domain pins per the reference manual.
This page synthesizes distributor pricing, parametric alternatives, and practical design notes that complement the ST datasheet and reference manual, helping engineers evaluate the STM32F091RBT6 for production BOM decisions.
Bộ thay thế dễ dàng lắp đặt cho STM32F091RBT6 — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
Các biến thể trong loạt này
Các mẫu cùng loạt có thể lắp đặt dễ dàng tương thích với STM32F091RBT6 (cùng hình factor và footprint) — khác nhau ở Flash Memory, Package, SRAM, ADC, Communication Interfaces.
STM32F091RCT6
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →STM32F091RBT6TR
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
STM32F091VBT6
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
STM32F071VBT6
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →GD32F130R8T6
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
STM32F071RBT6
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →STM32F091RBT6 Tỷ lệ tối đa & tính chất điện
| Core | ARM Cortex-M0 32-bit RISC |
| Tần số xung maksimum | 48 MHz |
| Flash Memory | 128 KB (128K x 8) |
| SRAM | 32 KB |
| Điện áp cung cấp | 2.0 V to 3.6 V |
| Nhiệt độ hoạt động | -40 C to +85 C |
| Hộp | 64-LQFP (10x10 mm) |
| Kiểu lắp đặt | Surface Mount |
| ADC | 12-bit, up to 16 channels, 1 MSPS |
| DAC | 12-bit, 2 channels |
| Timers | 12 (general-purpose, basic, advanced-control) |
| Communication Interfaces | 2x I2C, 2x SPI, 4x USART, 1x USB 2.0 FS, 1x CAN 2.0B, 1x HDMI-CEC |
| Debug Interface | SWD, JTAG |
| DMA | 7-channel |
| Trạng thái RoHS | Compliant |
| Lead-Free | Yes |
Cấu hình chân STM32F091RBT6
| Chân 1 | PB9 — General-purpose I/O or I2C1_SDA alternate function |
| Chân 2 | PC13 — Tamper-RTC / GPIO |
| Chân 3 | PC14 — OSC32_IN (LSE crystal) |
| Chân 4 | PC15 — OSC32_OUT (LSE crystal) |
| Chân 5 | OSC_IN — HSE crystal input or external clock |
| Chân 6 | OSC_OUT — HSE crystal output |
| Chân 7 | NRST — Reset input (active low) |
| Chân 8 | VSSA — Analog ground |
| Chân 9 | VDDA — Analog supply (2.0-3.6V) |
| Chân 10 | PA0 — GPIO / ADC_IN0 / TIM2_CH1 / WKUP |
| Chân 11 | PA1 — GPIO / ADC_IN1 / TIM2_CH2 |
| Chân 12 | PA2 — GPIO / ADC_IN2 / USART1_TX / TIM15_CH1 |
| Chân 13 | PA3 — GPIO / ADC_IN3 / USART1_RX / TIM15_CH2 |
| Chân 14 | PA4 — GPIO / ADC_IN4 / SPI1_NSS / DAC1_OUT |
| Chân 15 | PA5 — GPIO / ADC_IN5 / SPI1_SCK / DAC2_OUT |
| Chân 16 | PA6 — GPIO / ADC_IN6 / SPI1_MISO / TIM3_CH1 |
| Chân 17 | PA7 — GPIO / ADC_IN7 / SPI1_MOSI / TIM3_CH2 |
| Chân 18 | PB0 — GPIO / ADC_IN8 / TIM3_CH3 |
| Chân 19 | PB1 — GPIO / ADC_IN9 / TIM3_CH4 |
| Chân 20 | PB2 — GPIO / BOOT1 |
| Chân 21 | PB10 — GPIO / I2C2_SCL / USART3_TX |
| Chân 22 | PB11 — GPIO / I2C2_SDA / USART3_RX |
| Chân 23 | VSS_1 — Digital ground |
| Chân 24 | VDD_1 — Digital supply (2.0-3.6V) |
| Chân 25 | PB12 — GPIO / SPI2_NSS / TIM1_BKIN |
| Chân 26 | PB13 — GPIO / SPI2_SCK / TIM1_CH1N |
| Chân 27 | PB14 — GPIO / SPI2_MISO / TIM1_CH2N |
| Chân 28 | PB15 — GPIO / SPI2_MOSI / TIM1_CH3N |
| Chân 29 | PA8 — GPIO / USART1_CK / TIM1_CH1 |
| Chân 30 | PA9 — GPIO / USART1_TX / TIM1_CH2 / I2C1_SCL |
| Chân 31 | PA10 — GPIO / USART1_RX / TIM1_CH3 / I2C1_SDA |
| Chân 32 | PA11 — GPIO / USB_DM / CAN1_RX / TIM1_CH4 |
| Chân 33 | PA12 — GPIO / USB_DP / CAN1_TX / TIM1_ETR |
| Chân 34 | PA13 — SWDIO / JTMS |
| Chân 35 | VSS_2 — Digital ground |
| Chân 36 | VDD_2 — Digital supply (2.0-3.6V) |
| Chân 37 | PA14 — SWCLK / JTCK |
| Chân 38 | PA15 — GPIO / JTDI / TIM2_CH1_ETR |
| Chân 39 | PB3 — GPIO / JTDO / TIM2_CH2 / SPI1_SCK |
| Chân 40 | PB4 — GPIO / NJTRST / TIM3_CH1 |
| Chân 41 | PB5 — GPIO / I2C1_SMBAI / TIM3_CH2 |
| Chân 42 | PB6 — GPIO / I2C1_SCL / TIM4_CH1 / USART1_TX |
| Chân 43 | PB7 — GPIO / I2C1_SDA / TIM4_CH2 / USART1_RX |
| Chân 44 | BOOT0 — Boot mode selection |
| Chân 45 | PB8 — GPIO / TIM4_CH3 / CAN1_RX |
| Chân 46 | VSS_3 — Digital ground |
| Chân 47 | VDD_3 — Digital supply (2.0-3.6V) |
| Chân 48 | PB9 — GPIO / I2C1_SDA / TIM4_CH4 / CAN1_TX |
| Chân 49 | VSS_4 — Digital ground |
| Chân 50 | VDD_4 — Digital supply (2.0-3.6V) |
| Chân 51 | PC0 — GPIO / ADC_IN10 |
| Chân 52 | PC1 — GPIO / ADC_IN11 |
| Chân 53 | PC2 — GPIO / ADC_IN12 |
| Chân 54 | PC3 — GPIO / ADC_IN13 |
| Chân 55 | VREF+ — ADC voltage reference (tie to VDDA) |
| Chân 56 | VDDA — Analog supply (2.0-3.6V) |
| Chân 57 | PA0 — WKUP / GPIO / ADC_IN0 (alternate pin) |
| Chân 58 | PC4 — GPIO / ADC_IN14 |
| Chân 59 | PC5 — GPIO / ADC_IN15 |
| Chân 60 | PC6 — GPIO / TIM3_CH1 |
| Chân 61 | PC7 — GPIO / TIM3_CH2 |
| Chân 62 | PC8 — GPIO / TIM3_CH3 |
| Chân 63 | PC9 — GPIO / TIM3_CH4 |
| Chân 64 | PB10 — GPIO / I2C2_SCL (alternate pin) |
Ứng dụng tiêu biểu
STM32F091RBT6 phù hợp cho 6 Áp dụngs: USB HID / CDC Peripherals, CAN Bus Industrial Nodes, Low-Cost Motor Control (BLDC / Stepper), Smart Sensors and IoT Edge Nodes, Consumer Appliance Control Boards, USB-CDC Virtual COM Port Adapters.
USB HID / CDC Peripherals
The STM32F091RBT6's integrated USB 2.0 Full-Speed device peripheral with internal PHY makes it ideal for USB HID keyboards/mouse dongles and CDC virtual COM port adapters. Its 48 MHz Cortex-M0 handles USB protocol plus 12-bit ADC sampling in HID sensor stacks. With 128 KB Flash it fits USB stacks including HID report descriptors plus class-specific commands, while 32 KB SRAM accommodates USB ring buffers and HID report tables. Power consumption under Stop mode is a few microamperes, enabling USB-suspend-compliant battery-powered peripherals.
Được đề xuất
CAN Bus Industrial Nodes
The STM32F091RBT6's integrated bxCAN 2.0B interface plus industrial 2.0-3.6 V supply makes it a natural fit for CANopen and DeviceNet slave nodes. Its 48 MHz CPU runs CANopen stacks with sub-millisecond cycle times, while the 12 timers include advanced-control PWM outputs for motor control overlays. The 64-LQFP exposes 50+ GPIO for digital inputs/outputs on DIN-rail terminals. Combined with external TJA1051T/3 transceiver, this MCU delivers robust industrial-grade communication at competitive BOM cost versus DSP-based solutions.
Được đề xuất
Low-Cost Motor Control (BLDC / Stepper)
The STM32F091RBT6 drives BLDC and stepper motors in cost-sensitive applications like small fans, pumps, and appliances. Its 12 timers include advanced-control PWM timers with complementary outputs and hardware dead-time insertion, supporting 6-step and FOC commutation on small motors. The 12-bit ADC with 1 MSPS samples back-EMF or current shunt signals, while the 32 KB SRAM handles field-oriented control loops at adequate update rates. The 64-LQFP provides enough pins for 3-phase gate driver interfaces plus Hall/encoder inputs.
Được đề xuất
Smart Sensors and IoT Edge Nodes
The STM32F091RBT6 pairs a 12-bit 1 MSPS ADC with Cortex-M0 DSP-grade throughput for sensor aggregation nodes that read multiple analog channels and forward data over USB or CAN. Its 32 KB SRAM buffers time-series sensor data, while 128 KB Flash accommodates OTA bootloader plus application firmware. The 2.0-3.6 V supply directly runs from single-cell Li-Ion or 3.3 V regulated rails typical in IoT endpoints. Low-power Stop mode below 5 uA enables battery-operated sensors with months of runtime on a single 18650 cell.
Được đề xuất
Consumer Appliance Control Boards
The STM32F091RBT6 replaces 8/16-bit microcontrollers in white-goods and small appliances where its 48 MHz Cortex-M0 handles capacitive touch via ST's TSC library plus display driving over SPI/I2C. Its 64-LQFP package has ample GPIO for relay drivers, button matrices, and segment LCD interfacing. The 2.0-3.6 V supply matches rectified mains-down designs with small switching regulators. Integrated HDMI-CEC capability lets it double as a side-channel remote control processor in connected appliances.
Được đề xuất
USB-CDC Virtual COM Port Adapters
The STM32F091RBT6's USB Full-Speed plus 4x USART combination suits USB-to-UART bridge firmware that turns the MCU into a multi-port CDC adapter. With 128 KB Flash it fits USB CDC class driver plus 4 USART interrupt loops, while 32 KB SRAM handles USB endpoint buffers plus UART FIFOs. The 48 MHz Cortex-M0 sustains 921600 baud on each USART simultaneously without CPU saturation. The 64-LQFP exposes all 4 USARTs plus USB pins concurrently, simplifying PCB layout versus 32-pin parts that require USART sharing.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho STM32F091RBT6 — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này | STM32F091RCT6 | STM32F091RBT6TR | STM32F091VBT6 | STM32F071VBT6 | GD32F130R8T6 | STM32F071RBT6 |
|---|---|---|---|---|---|---|---|
| Package | 64-LQFP (10x10 mm) | 64-LQFP (10x10 mm) - same | 64-LQFP (10x10 mm) - same | 100-LQFP (different pin count) | 100-LQFP (different pin count) | 64-LQFP - same | 64-LQFP - same |
| Brand | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics | GigaDevice (cross-brand) | STMicroelectronics |
| Core | ARM Cortex-M0 | ARM Cortex-M0 | ARM Cortex-M0 | ARM Cortex-M0 | ARM Cortex-M0 | ARM Cortex-M3 | ARM Cortex-M0 |
| Maximum Clock | 48 MHz | 48 MHz | 48 MHz | 48 MHz | 48 MHz | 108 MHz | 48 MHz |
| Flash | 128 KB | 256 KB | 128 KB | 128 KB | 128 KB | 64 KB | 128 KB |
| SRAM | 32 KB | 32 KB | 32 KB | 32 KB | 16 KB | 20 KB | 16 KB |
| CAN Interface | Yes (CAN 2.0B) | Yes | Yes | Yes | No | Yes | No |
| USB 2.0 FS | Yes (integrated PHY) | Yes | Yes | Yes | No (USB on some variants) | Yes | No |
| Supply Voltage | 2.0-3.6 V | 2.0-3.6 V | 2.0-3.6 V | 2.0-3.6 V | 2.0-3.6 V | 2.6-3.6 V | 2.0-3.6 V |
Bảo phân biệt quan trọng
- Integrated CAN 2.0B plus USB 2.0 Full-Speed with internal PHY (vsSTM32F071RBT6)
- 32 KB SRAM vs 16 KB SRAM (vsSTM32F071VBT6)
- Pin-compatible Cortex-M3 with 2.25x higher clock (vsGD32F130R8T6)
Ghi chú thiết kế
Place a 100 nF X7R ceramic decoupling capacitor on each of the four VDD pins (VDD_1, VDD_2, VDD_3, VDD_4) plus a bulk 4.7-10 uF near VDD_1. Tie VDDA directly to VDD with its own 100 nF + 1 uF network to reduce ADC noise; add 10 nF + 1 uF on VREF+ when used. Ensure VDDA and VDD difference never exceeds 0.4 V to avoid latch-up. The MCU draws roughly 20-25 mA active at 48 MHz across all peripherals, so budget the regulator accordingly.
Route the USB DP/DM pair as a 90-ohm differential with no stub branches and keep them away from clock traces; place the 33-ohm series damping resistors within 5 mm of the MCU pins. Place the HSE crystal and its load capacitors (typically 10-20 pF) within 5 mm of OSC_IN/OSC_OUT, and guard the LSE 32.768 kHz crystal traces against digital coupling. SWDIO and SWCLK should be routed with 4.7 kohm pull-ups to VDD and accessible via test points for production programming.
Do not forget to configure the BOOT0 pin via a 10 kohm pull-down for normal boot from Flash - leaving it floating causes unpredictable boot modes. Ensure NRST has the recommended 100 nF + 10 kohm reset network to provide clean POR behavior; missing components may cause brown-out-like lockups. For CAN applications, do not omit the TJA1051T/3 transceiver between the MCU's CAN_TX/RX and the bus; the STM32's CAN peripheral is not isolated and requires a true bus driver for EMC compliance.
Thông tin tuân thủ
RoHS and lead-free compliance per STMicroelectronics product page. Halogen-free status not explicitly stated in verified web data. AEC-Q100 grade not available for STM32F091RBT6 industrial variant.
