STM32G071RBT3 - 64MHz Cortex-M0+ 128KB MCU | STMicroelectronics
Référence : STM32G071RBT3 ✓ ActifSTM32G071RBT3 Présentation
A microcontroller is a semiconductor device that integrates a processor core, program memory, data memory, peripherals, and communication interfaces onto one package. The STM32G071 belongs to the STM32G0 mainstream MCU family, where the Cortex-M0+ core provides a simple instruction set, efficient event-driven execution, and broad ecosystem support for connected industrial, consumer, and equipment-control products. The STM32G071RBT3 is specifically useful when designers need 128 KB of Flash while retaining a compact 64-LQFP footprint.
The key feature set includes an Arm Cortex-M0+ 32-bit RISC core operating up to 64 MHz, 128 KB of Flash, 36 KB of RAM, four USART peripherals, and integrated ADC and DAC resources. The 1.7 V to 3.6 V operating range supports 3.3 V systems and allows the MCU to interface with low-voltage sensors, actuators, communications modules, and digital control logic. The 64-LQFP package provides a practical pin count for designs requiring multiple peripheral connections.
The STM32G071 architecture is designed for embedded control rather than high-performance computing. Its relatively compact memory configuration is suitable for firmware that manages sensors, communicates over serial interfaces, controls timers, and monitors analog signals. The integrated ADC and DAC reduce the need for external conversion components in measurement and signal-control designs, while the four USARTs support multiple serial devices or multi-channel communication arrangements.
Typical applications include industrial sensor controllers, compact motor and actuator interfaces, building automation endpoints, communication modules, low-voltage instrumentation, and consumer devices with modest local processing requirements. Because the MCU is offered in a 64-LQFP package, PCB layouts can expose more GPIO and peripheral options than smaller packages while retaining a conventional leaded format for prototype assembly and automated production.
For new designs, verify the exact pin assignments, peripheral multiplexing, electrical limits, and firmware support against the STM32G071RB product page and manufacturer datasheet before layout release. When replacing a component, check the flash and RAM requirements, clock configuration, package dimensions, and all used peripheral connections rather than relying only on the device family name. This page combines manufacturer specifications, sourcing guidance, replacement considerations, and application-oriented design information for faster engineering evaluation.
Alternatives de remplacement direct pour STM32G071RBT3 — 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 STM32G071RBT3 (même facteur de forme et même empreinte) — différant par Communication Interfaces, Core, Flash Memory, Package.
STM32G071RBT6
✅ Remplacement direct✓ En stock
$0.9352 / unité
Voir la fiche technique →STM32G071RBT7TR
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
STM32G071RBT7
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
STM32G071R8T6
✅ Remplacement directContactez-nous pour le prix
Voir la fiche technique →STM32G071R8T3
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
STM32G071RBT3 Valeurs maximales et caractéristiques électriques
| Product Type | 32-bit Arm Cortex-M0+ microcontroller |
| Core | Arm Cortex-M0+ 32-bit RISC |
| Maximum CPU Frequency | 64 MHz |
| Flash Memory | 128 KB |
| RAM | 36 KB |
| USART Count | 4 |
| ADC | 12-bit ADC |
| DAC | 12-bit DAC |
| Operating Voltage Range | 1.7 V to 3.6 V |
| Boîtier | 64-LQFP, 10 x 10 mm |
| Nombre de broches | 64 pins |
| Core Architecture | ARM Cortex-M0+ |
| Product Family | STM32G0 mainstream microcontrollers |
| Timer Resources | Integrated timers |
| Communication Interfaces | 4 x USART plus additional communication interfaces |
Guide de configuration des broches du STM32G071RBT3 64-lqfp, 10 x 10 mm
Configuration des broches du STM32G071RBT3 (boîtier 64-lqfp, 10 x 10 mm). Ce circuit intégré numérique comprend des GPIO, des interfaces de communication (UART, SPI, I2C) et des broches d'alimentation. Consultez la fiche technique du fabricant pour les fonctions alternatives des broches et les options de configuration. Indispensable pour la conception de systèmes embarqués et la conception de circuits imprimés.
Aucune donnée de brochage détaillée disponible pour STM32G071RBT3.
Consultez la fiche technique pour la configuration complète des broches.
Applications typiques
STM32G071RBT3 convient pour 6 applications: Industrial Sensor Controller, Low-Voltage Motor and Actuator Interface, Building Automation Endpoint, Communication and Protocol Hub, Precision Instrumentation, Battery-Managed Embedded Device.
Industrial Sensor Controller
The STM32G071RBT3 fits compact industrial sensor controllers that combine analog measurement with several serial devices. Its 12-bit ADC supports sensor conditioning and system monitoring, while the four USARTs can connect to transceivers, local displays, data loggers, or service interfaces. The 64 MHz Cortex-M0+ core provides useful throughput for filtering, calibration, fault detection, and protocol handling without demanding a higher-performance MCU. With 128 KB of Flash and 36 KB of RAM, the device can retain calibration data, operating-state logic, and communication buffers. The 64-LQFP package also exposes more I/O than compact leadless options, which is helpful when a controller needs discrete status indicators, sensor inputs, actuator outputs, and several peripheral connections on one board.
Recommandé
Low-Voltage Motor and Actuator Interface
The STM32G071RBT3 is appropriate for compact low-voltage motor, valve, and actuator controllers where timing, serial control, and analog feedback must be combined in one device. Timers support deterministic pulse generation and input capture, while the ADC can monitor current, position, or temperature signals. The four USARTs allow the controller to communicate with a host computer, remote sensor, or multi-axis controller. A 1.7 V to 3.6 V operating range fits battery-managed and 3.3 V industrial subsystems. Designers should size external driver transistors, motor protection, decoupling, and power grounding independently because the MCU controls the system rather than directly supplying actuator power.
Recommandé
Building Automation Endpoint
The STM32G071RBT3 works well in building automation endpoints that monitor room or equipment conditions and report status over serial links. Its ADC can acquire analog environmental or occupancy-related sensor outputs, while four USARTs support controllers, transceivers, access modules, or configuration ports. The 36 KB of RAM is sufficient for protocol buffering and state management, and 128 KB of Flash leaves room for application firmware, communications stacks, and update logic. The 64-LQFP package is useful when a wall-mounted controller needs multiple discrete inputs and outputs without resorting to a very small package. Low-power behavior should be configured during firmware development to match the installation's duty cycle and available energy budget.
Recommandé
Communication and Protocol Hub
The STM32G071RBT3 can serve as a compact protocol hub or serial gateway because it provides four USART interfaces alongside a 64 MHz Cortex-M0+ processor. Each USART can connect to a local device, while the MCU routes data, applies protocol conversion, and manages buffered traffic. The 36 KB RAM supports practical packet buffering, and the 128 KB Flash capacity accommodates protocol handlers and application logic. A 64-LQFP package simplifies access to the required I/O and power pins during board bring-up. Real designs should include hardware flow control where needed, define connector protection for long cables, and test timing margins because the MCU must service several serial channels without dropping bytes.
Recommandé
Precision Instrumentation
The STM32G071RBT3 fits compact instrumentation that measures analog signals and generates controlled analog output. The 12-bit ADC supports acquisition from sensors and potentiometers, while the 12-bit DAC can create reference or control voltages without an external converter. At up to 64 MHz, the MCU can perform sampling control, averaging, calibration, and display or communication updates in a small embedded package. Its four USARTs allow connection to computers, calibration equipment, or external transducers. For high-accuracy designs, analog grounding, reference stability, input filtering, and calibration strategy will usually have a greater effect on end results than the nominal converter resolution alone.
Recommandé
Battery-Managed Embedded Device
The STM32G071RBT3 is suitable for battery-managed devices that need local control, serial connectivity, and mixed analog and digital functions. Its 1.7 V minimum operating voltage provides flexibility in low-voltage power designs, while low-power operating modes can reduce consumption when the device spends most of its time asleep. The 128 KB Flash stores application code and configuration, and the 36 KB RAM supports short-lived processing and communication buffers. For battery products, the engineer should calculate average current from the MCU duty cycle plus the load presented by sensors and radios. Supply selection, regulator dropout, leakage, and wake-up behavior must be evaluated together rather than relying on active current alone.
Recommandé
Données de référence d'ingénierie pour STM32G071RBT3 — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | STM32G071RBT6 | STM32G071RBT7TR | STM32G071RBT7 | STM32G071R8T6 | STM32G071R8T3 |
|---|---|---|---|---|---|---|
| Package | 64-LQFP (10 x 10 mm) | 64-LQFP (10 x 10 mm) | 64-LQFP (10 x 10 mm) | 64-LQFP (10 x 10 mm) | 64-LQFP (10 x 10 mm) | 64-LQFP (10 x 10 mm) |
| Brand | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics |
| CPU Core | Arm Cortex-M0+ 32-bit RISC | Arm Cortex-M0+ 32-bit RISC | Arm Cortex-M0+ 32-bit RISC | Arm Cortex-M0+ 32-bit RISC | Arm Cortex-M0+ 32-bit RISC | Arm Cortex-M0+ 32-bit RISC |
| Maximum Frequency | 64 MHz | 64 MHz | 64 MHz | 64 MHz | 64 MHz | 64 MHz |
| Flash Memory | 128 KB | 128 KB | 128 KB | 128 KB | 64 KB | 64 KB |
| RAM | 36 KB | 36 KB | 36 KB | 36 KB | 8 KB | 8 KB |
| Operating Voltage Range | 1.7 V to 3.6 V | 1.7 V to 3.6 V | 1.7 V to 3.6 V | 1.7 V to 3.6 V | 1.7 V to 3.6 V | 1.7 V to 3.6 V |
| USART Count | 4 | 4 | 4 | 4 | 4 | 4 |
Principaux différenciateurs
- Higher memory capacity than R8-family alternatives (vs STM32G071R8T6)
- Matches the full STM32G071RBT memory and core configuration (vs STM32G071RBT6)
- Four-USART integration reduces peripheral bridging (vs STM32G071R8T3)
Notes de conception
Place all decoupling capacitors close to the corresponding supply and ground pins, with the shortest possible return path through the ground plane. Follow the STM32G071RB datasheet for the required capacitor values, maximum ESR, startup behavior, and power-source transition limits. Keep analog and digital return currents separated where possible, and verify the regulator's dropout and transient response against the 1.7 V to 3.6 V operating range.
Assign every pad by function before routing the PCB. The 64-LQFP package supports many alternate functions, but changing a pin's UART, timer, ADC, DAC, or debug role can move the associated peripheral to another I/O. Preserve SWD programming access, oscillator access, reset behavior, and exposed power pins. Use the manufacturer package drawing and land pattern to confirm pad dimensions, pin numbering, and solder mask clearance.
Route high-speed or noise-sensitive signals away from motor drivers, relay coils, switching supplies, and the MCU's analog inputs. If ADC channels measure low-level signals, use a quiet reference and return path, add filtering at the connector where needed, and sample away from switching edges. For UART links longer than a board-level connection, verify levels and add appropriate protection rather than relying solely on the MCU's internal interface.
Do not treat every STM32G071 ordering suffix as electrically identical. Verify the temperature grade, package code, flash capacity, RAM capacity, and lifecycle status in the manufacturer ordering information. Before approving a replacement, confirm that the firmware fits the available Flash and RAM, all used pins retain the required alternate functions, and the clock, ADC, DAC, and communication peripheral assignments remain available.
Informations de conformité
Compliance declarations were not identified in the manufacturer or channel information and require confirmation in the current STMicroelectronics product documentation or material declaration.