STM32F103REY6TR - 72MHz 512KB MCU | Embedded Control
Référence : STM32F103REY6TR ✓ ActifSTM32F103REY6TR Présentation
An ARM Cortex-M3 microcontroller is a reduced-instruction-set processor designed for embedded control. Within the hierarchy of semiconductor devices, the Cortex-M3 MCU operates below a microprocessor and above a basic controller, providing interrupt handling, deterministic peripherals, and compact code execution for battery-powered, industrial, communications, and real-time products. The STM32F103 family is designed around a common peripheral architecture and extensive software-tool support.
Three headline capabilities define the STM32F103REY6TR: a maximum 72 MHz operating frequency, 512 KB of programmable Flash, and three 12-bit analog-to-digital converters. The listed 37 I/O ports support digital control and communication interfaces, while the analog section enables analog measurements from sensor and control circuits. The device also includes 11 timers and 13 communication interfaces according to the manufacturer datasheet, reducing the need for external peripheral components in mixed analog, digital, and communications designs.
The STM32F103REY6TR uses an ARM Cortex-M3 core and supports the STM32F1 high-density product family. Its communication resources include USB and CAN, while serial peripherals support embedded networking and data acquisition. Three ADCs and dedicated timer blocks are useful for motor control, power conversion, industrial sensing, and real-time feedback systems. The 72 MHz clock provides additional performance margin for protocol processing, control loops, and supervisory firmware.
Typical applications include industrial automation controllers, CAN-connected equipment, USB data loggers, motor-control boards, instrumentation platforms, and compact embedded gateways. The combination of three ADCs, multiple timers, CAN, USB, and 37 I/O positions allows designers to consolidate peripheral functions onto one microcontroller while retaining a broad range of communication options.
Designers should verify the exact land pattern and pin assignments against the manufacturer package drawing before layout release. Because the public product information describes the ordered part as a 64-pin device while one distributor listing labels its physical format as 64-WLCSP, engineers should confirm the shipping package and exposed-pad details for the production ordering code before committing to a PCB footprint.
This product page combines the ordered part identity, 72 MHz performance class, 512 KB Flash configuration, peripheral resources, lifecycle status, and practical footprint checks into a concise engineering reference. It also highlights where firmware compatibility and package verification remain necessary when evaluating second-source candidates for an STM32F103-based design.
Alternatives de remplacement direct pour STM32F103REY6TR — 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 STM32F103REY6TR (même facteur de forme et même empreinte) — différant par ADC, Communication Interfaces, Flash Memory, Package.
STM32F103RET6TR
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Voir la fiche technique →STM32F103REY6TR Valeurs maximales et caractéristiques électriques
| Product Type | 32-bit ARM Cortex-M3 microcontroller |
| CPU Core | ARM Cortex-M3 |
| Fréquence d'horloge maximale | 72 MHz |
| Flash Memory | 512 KB (512K x 8) |
| Architecture | 32-bit |
| ADC | 3 x 12-bit ADC |
| Timers | 11 total |
| General-Purpose Timers | 4 x 16-bit |
| PWM Timers | 2 |
| Communication Interfaces | 13 total |
| USB Interface | 1 |
| CAN Interface | 1 |
| I/O Ports | 37 |
| Supply Voltage Range | 2 V to 3.6 V |
| Package Pins | 64 |
| Boîtier | 64-WLCSP (4.47 mm x 4.4 mm) |
| Product Line | STM32F1 high-density performance line |
| Statut du cycle de vie | Active |
| Statut RoHS | Compliant |
Guide de configuration des broches du STM32F103REY6TR 64-wlcsp (4.47 mm x 4.4 mm)
Configuration des broches du STM32F103REY6TR (boîtier 64-wlcsp (4.47 mm x 4.4 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 STM32F103REY6TR.
Consultez la fiche technique pour la configuration complète des broches.
Applications typiques
STM32F103REY6TR convient pour 6 applications: Industrial Automation Controller, USB Data Logger, CAN-Connected Equipment, Brushless Motor Control, Battery-Powered Sensor Node, Precision Instrumentation Front End.
Industrial Automation Controller
The STM32F103REY6TR fits compact industrial automation controllers because its 72 MHz Cortex-M3 core provides control-processing headroom while three 12-bit ADCs, 11 timers, and 37 I/O ports support sensors, actuators, and discrete controls. The integrated USB and CAN capabilities simplify connection to a service computer or machine network. Engineers can implement acquisition, interlocks, state-machine control, and fault logging in one device. A practical design should isolate noisy industrial wiring, use separate analog and digital return paths, and validate timing under worst-case motor and switching loads.
USB Data Logger
The STM32F103REY6TR is appropriate for a USB-connected data logger because it integrates USB with a 72 MHz Cortex-M3 core and 512 KB of Flash for buffering and firmware storage. Three 12-bit ADCs can acquire analog sensor channels, while the timer and communication resources support timestamping and communication with storage or host electronics. In a practical implementation, buffer samples locally, timestamp events through a hardware timer, and transfer completed records over USB. Validate input impedance, sampling timing, grounding, and USB signal integrity against the selected external transceiver and connector.
CAN-Connected Equipment
The STM32F103REY6TR suits CAN-connected industrial and transportation equipment because the MCU includes a dedicated CAN interface alongside USB and the broader STM32 communication peripheral set. Its 72 MHz core can execute protocol handling, diagnostics, and supervisory logic, while the 512 KB Flash supports a larger application and update payload. The controller requires an external CAN transceiver, and the PCB must provide controlled differential routing and surge protection. Firmware should include bus-off recovery, state counters, timeout handling, and message validation appropriate to the vehicle or machine network.
Brushless Motor Control
The STM32F103REY6TR is well matched to compact brushless motor-control systems because the manufacturer identifies the device for motor-control applications and provides two PWM timers, four general-purpose 16-bit timers, and three 12-bit ADCs. These resources support rotor-position sensing, phase-current measurement, duty-cycle control, and protection sequencing on a 72 MHz Cortex-M3 core. The external power stage remains separate, so gate drivers, MOSFETs, current-sense amplifiers, and hall-effect sensors must be selected to match the motor voltage and current. Validate commutation timing, dead time, overcurrent response, and thermal behavior at maximum load.
Battery-Powered Sensor Node
The STM32F103REY6TR can serve as the control processor in a battery-powered sensor node when its 2 V to 3.6 V operating range is compatible with the cell and regulation strategy. The 37 I/O ports support environmental sensors, status indicators, and low-power wake sources, while USB or CAN provides an optional wired configuration or maintenance path. For low-duty-cycle monitoring, firmware should disable unused peripherals, stop clocks when safe, and use the MCU’s low-power modes after confirming retention and wake behavior. Battery life ultimately depends on sensor load, regulator quiescent current, radio duty cycle, and board leakage.
Precision Instrumentation Front End
The STM32F103REY6TR is suitable for a precision instrumentation front end that combines analog measurement with communications and control functions. Its three 12-bit ADCs support multiple sensor inputs, while the 72 MHz core can perform filtering, calibration, status monitoring, and protocol handling. The 512 KB Flash capacity provides room for configuration tables, calibration coefficients, and field-update logic. To preserve measurement quality, use separate analog and digital ground strategy, place input components close to the ADC inputs, control switching-node coupling, and calibrate the complete signal chain rather than relying on nominal ADC resolution alone.
Données de référence d'ingénierie pour STM32F103REY6TR — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | STM32F103RET6TR |
|---|---|---|
| Brand | STMicroelectronics | STMicroelectronics |
| Package | 64-WLCSP (4.47 mm x 4.4 mm) | 64-pin package; exact drawing requires verification |
| CPU Core | ARM Cortex-M3 | ARM Cortex-M3 |
| Maximum Clock Frequency | 72 MHz | 72 MHz |
| Flash Memory | 512 KB | 512 KB |
| Architecture | 32-bit | 32-bit |
Principaux différenciateurs
- High-density peripheral integration (vs STM32F103RET6TR)
- Integrated USB and CAN connectivity (vs STM32F103RET6TR)
- Purpose-built motor-control resource mix (vs STM32F103RET6TR)
Notes de conception
Do not release the PCB footprint until the package drawing for the exact STM32F103REY6TR ordering code has been checked against the assembly outline, pin-1 location, pitch, and exposed-pad geometry. One public listing describes a 64-WLCSP body measuring 4.47 mm by 4.4 mm, while other listings describe the ordered part only as a 64-pin device. Treat those descriptions as a verification warning and use the manufacturer package drawing as the controlling layout reference.
Design the 2 V to 3.6 V supply path for both steady-state and transient requirements. Place the required bypass capacitors at the appropriate supply and ground pins, keep their return current close to the device, and avoid routing switching-current paths through the analog measurement area. If the MCU is supplied from a buck converter or charge pump, verify startup, load-transient response, and noise at the MCU pins rather than relying only on the nominal supply range.
Keep analog inputs, ADC reference connections, and sensitive sensor traces away from PWM outputs, motor-driver switching nodes, and high-current return paths. The three 12-bit ADCs can provide useful resolution, but layout coupling and an unstable reference can still reduce measurement quality. Use a quiet analog supply where practical, follow the datasheet grounding recommendations, and validate acquisition accuracy with the complete sensor, protection, and analog-conditioning chain connected.
Treat a second-source STM32F103 as unverified until firmware and hardware checks are complete. Even devices with the same Cortex-M3 core, 72 MHz clock class, and 512 KB Flash may differ in peripheral behavior, interrupt mapping, startup code, oscillator requirements, or clock-tree configuration. Compare the relevant datasheets, run boot and peripheral regression tests, and verify USB and CAN operation before approving an alternate ordering code for production.
Informations de conformité
A technical listing identifies the STM32F103REY6TR as RoHS compliant. No additional regulatory declarations are included in the cited product information.
