STM32F091RBT6 - 48MHz ARM Cortex-M0 MCU 128KB Flash LQFP-64
Référence : STM32F091RBT6 ✓ Actif| Qté | Prix unitaire | Total |
|---|---|---|
| 1 | $4.2 | $4,20 |
| 10 | $3.78 | $37,80 |
| 100 | $3.36 | $336,00 |
| 500 | $2.94 | $1 470,00 |
| 1 000 | $2.52 | $2 520,00 |
STM32F091RBT6 Présentation
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.
Alternatives de remplacement direct pour STM32F091RBT6 — même boîtier, compatible broche à broche. Les références à boîtier différent nécessitant une retouche du PCB sont exclues.
Variantes de cette série
Modèles de la même série directement compatibles avec STM32F091RBT6 (même facteur de forme et même empreinte) — différant par ADC, DAC, Flash Memory, Operating Temperature.
Outil de comparaison rapide — sélectionnez des références alternatives pour une comparaison côte à côte :
STM32F091RCT6
✅ Remplacement direct✓ En stock
$2.71 / unité
Voir la fiche technique →STM32F091RBT6TR
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
STM32F091VBT6
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
STM32F071VBT6
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
GD32F130R8T6
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
STM32F071RBT6
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
STM32F091RBT6 Valeurs maximales et caractéristiques électriques
| Core | ARM Cortex-M0 32-bit RISC |
| Fréquence d'horloge maximale | 48 MHz |
| Flash Memory | 128 KB (128K x 8) |
| SRAM | 32 KB |
| Tension d'alimentation | 2.0 V to 3.6 V |
| Température de fonctionnement | -40 C to +85 C |
| Boîtier | 64-LQFP (10x10 mm) |
| Type de montage | 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 |
| Statut RoHS | Compliant |
| Lead-Free | Yes |
Configuration des broches de STM32F091RBT6
| Broche 1 | PB9 — General-purpose I/O or I2C1_SDA alternate function |
| Broche 2 | PC13 — Tamper-RTC / GPIO |
| Broche 3 | PC14 — OSC32_IN (LSE crystal) |
| Broche 4 | PC15 — OSC32_OUT (LSE crystal) |
| Broche 5 | OSC_IN — HSE crystal input or external clock |
| Broche 6 | OSC_OUT — HSE crystal output |
| Broche 7 | NRST — Reset input (active low) |
| Broche 8 | VSSA — Analog ground |
| Broche 9 | VDDA — Analog supply (2.0-3.6V) |
| Broche 10 | PA0 — GPIO / ADC_IN0 / TIM2_CH1 / WKUP |
| Broche 11 | PA1 — GPIO / ADC_IN1 / TIM2_CH2 |
| Broche 12 | PA2 — GPIO / ADC_IN2 / USART1_TX / TIM15_CH1 |
| Broche 13 | PA3 — GPIO / ADC_IN3 / USART1_RX / TIM15_CH2 |
| Broche 14 | PA4 — GPIO / ADC_IN4 / SPI1_NSS / DAC1_OUT |
| Broche 15 | PA5 — GPIO / ADC_IN5 / SPI1_SCK / DAC2_OUT |
| Broche 16 | PA6 — GPIO / ADC_IN6 / SPI1_MISO / TIM3_CH1 |
| Broche 17 | PA7 — GPIO / ADC_IN7 / SPI1_MOSI / TIM3_CH2 |
| Broche 18 | PB0 — GPIO / ADC_IN8 / TIM3_CH3 |
| Broche 19 | PB1 — GPIO / ADC_IN9 / TIM3_CH4 |
| Broche 20 | PB2 — GPIO / BOOT1 |
| Broche 21 | PB10 — GPIO / I2C2_SCL / USART3_TX |
| Broche 22 | PB11 — GPIO / I2C2_SDA / USART3_RX |
| Broche 23 | VSS_1 — Digital ground |
| Broche 24 | VDD_1 — Digital supply (2.0-3.6V) |
| Broche 25 | PB12 — GPIO / SPI2_NSS / TIM1_BKIN |
| Broche 26 | PB13 — GPIO / SPI2_SCK / TIM1_CH1N |
| Broche 27 | PB14 — GPIO / SPI2_MISO / TIM1_CH2N |
| Broche 28 | PB15 — GPIO / SPI2_MOSI / TIM1_CH3N |
| Broche 29 | PA8 — GPIO / USART1_CK / TIM1_CH1 |
| Broche 30 | PA9 — GPIO / USART1_TX / TIM1_CH2 / I2C1_SCL |
| Broche 31 | PA10 — GPIO / USART1_RX / TIM1_CH3 / I2C1_SDA |
| Broche 32 | PA11 — GPIO / USB_DM / CAN1_RX / TIM1_CH4 |
| Broche 33 | PA12 — GPIO / USB_DP / CAN1_TX / TIM1_ETR |
| Broche 34 | PA13 — SWDIO / JTMS |
| Broche 35 | VSS_2 — Digital ground |
| Broche 36 | VDD_2 — Digital supply (2.0-3.6V) |
| Broche 37 | PA14 — SWCLK / JTCK |
| Broche 38 | PA15 — GPIO / JTDI / TIM2_CH1_ETR |
| Broche 39 | PB3 — GPIO / JTDO / TIM2_CH2 / SPI1_SCK |
| Broche 40 | PB4 — GPIO / NJTRST / TIM3_CH1 |
| Broche 41 | PB5 — GPIO / I2C1_SMBAI / TIM3_CH2 |
| Broche 42 | PB6 — GPIO / I2C1_SCL / TIM4_CH1 / USART1_TX |
| Broche 43 | PB7 — GPIO / I2C1_SDA / TIM4_CH2 / USART1_RX |
| Broche 44 | BOOT0 — Boot mode selection |
| Broche 45 | PB8 — GPIO / TIM4_CH3 / CAN1_RX |
| Broche 46 | VSS_3 — Digital ground |
| Broche 47 | VDD_3 — Digital supply (2.0-3.6V) |
| Broche 48 | PB9 — GPIO / I2C1_SDA / TIM4_CH4 / CAN1_TX |
| Broche 49 | VSS_4 — Digital ground |
| Broche 50 | VDD_4 — Digital supply (2.0-3.6V) |
| Broche 51 | PC0 — GPIO / ADC_IN10 |
| Broche 52 | PC1 — GPIO / ADC_IN11 |
| Broche 53 | PC2 — GPIO / ADC_IN12 |
| Broche 54 | PC3 — GPIO / ADC_IN13 |
| Broche 55 | VREF+ — ADC voltage reference (tie to VDDA) |
| Broche 56 | VDDA — Analog supply (2.0-3.6V) |
| Broche 57 | PA0 — WKUP / GPIO / ADC_IN0 (alternate pin) |
| Broche 58 | PC4 — GPIO / ADC_IN14 |
| Broche 59 | PC5 — GPIO / ADC_IN15 |
| Broche 60 | PC6 — GPIO / TIM3_CH1 |
| Broche 61 | PC7 — GPIO / TIM3_CH2 |
| Broche 62 | PC8 — GPIO / TIM3_CH3 |
| Broche 63 | PC9 — GPIO / TIM3_CH4 |
| Broche 64 | PB10 — GPIO / I2C2_SCL (alternate pin) |
Applications typiques
STM32F091RBT6 convient pour 6 applications: 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.
Recommandé
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.
Recommandé
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.
Recommandé
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.
Recommandé
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.
Recommandé
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.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour STM32F091RBT6 — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | 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 |
Principaux différenciateurs
- Integrated CAN 2.0B plus USB 2.0 Full-Speed with internal PHY (vs STM32F071RBT6)
- 32 KB SRAM vs 16 KB SRAM (vs STM32F071VBT6)
- Pin-compatible Cortex-M3 with 2.25x higher clock (vs GD32F130R8T6)
Notes de conception
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.
Informations de conformité
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.
