STM32L4R5QII6 - 120MHz Cortex-M4 MCU | STMicroelectronics
N.º de pieza: STM32L4R5QII6 ✓ ActivoSTM32L4R5QII6 Descripción general
An ultra-low-power microcontroller is an embedded processing device designed to maintain useful computation while minimizing energy use. The STM32L4+ architecture combines a microcontroller, real-time control capability, data storage, and communication peripherals within a single silicon device. Its low-power design is intended for battery-powered, industrial, sensor, and connected products where energy efficiency contributes directly to battery life or heat management.
Key features include operation from a 1.71 V to 3.6 V power supply, a maximum core frequency of 120 MHz, and low-power consumption figures including 305 nA in VBAT mode for the RTC and backup registers and 33 nA in shutdown mode. The STM32L4R5QII6 also provides 110 I/O, USB OTG, an FPU, and DFSD capability, allowing one device to control peripherals, acquire data, and communicate with a host or service interface.
The device combines 2 MB of Flash with 640 KB of SRAM to support firmware, boot code, data logging, graphics buffers, and real-time control workloads. Its Arm Cortex-M4 processor supports single-precision floating-point instructions, which accelerates control calculations and digital filtering without requiring a separate accelerator. The STM32L4+ low-power feature set includes FlexPowerControl, Batch Acquisition Mode, and dedicated backup-domain functions.
Typical applications include industrial sensor nodes, compact data loggers, USB-connected instrumentation, low-power condition-monitoring equipment, and embedded control products with limited board area. The 7 x 7 mm UFBGA package supports dense designs, but it requires careful PCB layout, controlled assembly, and reliable power and decoupling networks to achieve predictable low-noise operation.
Power design should preserve the 1.71 V to 3.6 V operating range and place the required bypass capacitors close to the supply and ground pins. Firmware and board validation should also account for the 110 I/O limit and the high pin density of the 132-pin package. Use the manufacturer pin-description and land-pattern tables when assigning tracks and planning assembly.
This page combines manufacturer specifications, package details, drop-in candidates, application guidance, and engineering-oriented design notes to support MCU selection, PCB planning, firmware bring-up, and sourcing decisions.
Alternativas directas para STM32L4R5QII6 — mismo encapsulado, compatible pin a pin. Se excluyen las piezas de otro encapsulado que requieren retrabajo de la PCB.
Variantes de esta serie
Modelos de la misma serie compatibles directamente con STM32L4R5QII6 (mismo factor de forma y huella) — difiere en Flash Memory, Package, Processor Core.
STM32L4R5QII6P
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
STM32L4S5QII6
✅ Sustitución directaConsulte el precio
Ver hoja de datos →STM32L4R5QGI6TR
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
STM32L4R5QGI6
✅ Sustitución directaConsulte el precio
Ver hoja de datos →STM32L4R5QII6 Valores máximos y características eléctricas
| Product Type | Ultra-low-power 32-bit microcontroller |
| Processor Core | Arm Cortex-M4 |
| Maximum CPU Frequency | 120 MHz |
| Architecture | 32-bit RISC |
| Flash Memory | 2 MB |
| SRAM | 640 KB |
| Tensión de alimentación de funcionamiento | 1.71 V to 3.6 V |
| Rango de temperatura de funcionamiento | -40 °C to 85 °C / 125 °C |
| VBAT Mode Current | 305 nA |
| Shutdown Mode Current | 33 nA |
| Number of I/O | 110 I/O |
| Floating-Point Unit | FPU |
| USB Interface | USB OTG |
| Digital Filter for Sigma-Delta Modulators | DFSD |
| Power Control Technology | FlexPowerControl |
| Acquisition Mode | Batch Acquisition Mode (BAM) |
| Encapsulado | 132-pin UFBGA, 7 x 7 mm |
| Tipo de montaje | Surface mount |
Guía de configuración de pines de STM32L4R5QII6 132-pin ufbga, 7 x 7 mm
Configuración de pines para STM32L4R5QII6 (encapsulado 132-pin ufbga, 7 x 7 mm). Este CI digital incluye GPIO, interfaces de comunicación (UART, SPI, I2C) y pines de alimentación. Consulte la hoja de datos del fabricante para conocer las funciones alternativas de los pines y las opciones de configuración. Esencial para el diseño de sistemas embebidos y el diseño de PCB.
No hay datos detallados de patillaje disponibles para STM32L4R5QII6.
Consulte la hoja de datos para ver la configuración completa de patillas.
Aplicaciones típicas
STM32L4R5QII6 es adecuado para 6 aplicacións: Industrial Sensor Node, USB Connected Instrumentation, Low-Power Data Logger, Precision Sensor Interface, Battery-Powered Condition Monitor, Compact Embedded Control System.
Industrial Sensor Node
The STM32L4R5QII6 fits industrial sensor nodes that periodically acquire measurements and must preserve a compact, low-power control architecture. Its 120 MHz Arm Cortex-M4 core and FPU support signal filtering and local compensation, while 640 KB of SRAM can hold acquisition buffers and 2 MB of Flash can accommodate firmware, calibration data, and communications logic. The 1.71 V to 3.6 V supply range supports low-voltage industrial designs. Its 305 nA VBAT mode can maintain RTC and backup registers between active measurement intervals, while the 132-pin UFBGA preserves board area in densely populated sensing equipment.
Recomendado
USB Connected Instrumentation
The STM32L4R5QII6 is suitable for USB-connected instrumentation that combines control, data acquisition, and host communication in one device. USB OTG provides an integrated peripheral path, while the 120 MHz Cortex-M4 core and single-precision FPU can process calibration and measurement algorithms. The 2 MB of Flash supports larger embedded applications than a small MCU configuration, and 640 KB of SRAM provides working space for USB buffers and real-time data handling. Its low-power shutdown and VBAT modes also make it useful for portable test instruments that spend substantial time between measurement cycles.
Recomendado
Low-Power Data Logger
The STM32L4R5QII6 supports low-power data loggers where long standby periods and efficient acquisition are more important than continuous maximum-rate processing. Its 2 MB of Flash provides room for buffered records, configuration data, and application firmware, while 640 KB of SRAM allows temporary storage during acquisition bursts. The 120 MHz Cortex-M4 core can execute compression, filtering, and timestamp handling between sleep periods. With 305 nA VBAT mode for RTC and backup functions and 33 nA shutdown operation, it supports designs where the battery budget is dominated by wake, measure, store, and sleep cycles.
Recomendado
Precision Sensor Interface
The STM32L4R5QII6 is well suited to precision sensor interfaces requiring fast sampling, digital filtering, and compact embedded control. DFSD support provides a dedicated path for suitable sigma-delta modulator data, while the FPU accelerates filtering and correction calculations at the 120 MHz core frequency. The 1.71 V to 3.6 V operating range permits integration with low-energy analog and sensor circuits. Its 110 I/O allows connection of sensors, status indicators, and local controls, although the dense 132-pin UFBGA requires careful escape routing and a deliberate power-ground layout.
Recomendado
Battery-Powered Condition Monitor
The STM32L4R5QII6 fits battery-powered condition-monitoring equipment that must remain responsive while consuming little power between events. The STM32L4+ low-power architecture includes 305 nA VBAT mode for the RTC and backup registers and 33 nA shutdown mode, allowing the device to preserve timing information and manage a duty-cycled sensing schedule. Its 120 MHz Cortex-M4 core can evaluate thresholds and classify events after wake-up, while 2 MB of Flash and 640 KB of SRAM provide space for event logs and diagnostic state without requiring a separate storage controller.
Recomendado
Compact Embedded Control System
The STM32L4R5QII6 supports compact embedded control systems that combine real-time control, communications, and local data processing. The 120 MHz Cortex-M4 core with FPU supports motor, thermal, or process-control loops, while 2 MB of Flash accommodates control firmware and 640 KB of SRAM supports state machines and communication buffers. The 110 I/O count provides substantial peripheral connectivity for sensors, actuators, and human interfaces. Its 7 x 7 mm UFBGA package helps reduce board area, but high-density assembly makes land-pattern accuracy, thermal management, and manufacturing capability critical design constraints.
Recomendado
Resumen de productos recomendados
Datos de referencia de ingeniería para STM32L4R5QII6 — comparación, orientación de diseño e información de cumplimiento.
Guía de selección
Comparación con alternativas
| Parámetro | Este producto | STM32L4R5QII6P | STM32L4S5QII6 | STM32L4R5QGI6TR | STM32L4R5QGI6 |
|---|---|---|---|---|---|
| Brand | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics |
| Processor Core | Arm Cortex-M4 | Arm Cortex-M4 | Arm Cortex-M4 | Arm Cortex-M4 | Arm Cortex-M4 |
| Maximum CPU Frequency | 120 MHz | 120 MHz | 120 MHz | 120 MHz | 120 MHz |
Diferenciadores clave
- Maintains full 120 MHz Cortex-M4 performance across the identified same-package alternatives (frente a STM32L4S5QII6)
- Provides a documented 2 MB Flash configuration for firmware and embedded data (frente a STM32L4R5QII6P)
- Combines 640 KB of SRAM with a 120 MHz FPU-capable Cortex-M4 core (frente a STM32L4R5QGI6)
- Matches the 132-pin package class while retaining the same 120 MHz core speed (frente a STM32L4R5QGI6TR)
Notas de diseño
Use the manufacturer land pattern for the 132-pin 7 x 7 mm UFBGA and verify its exposed-pad connection before release. Place supply and ground bypass capacitors adjacent to the relevant pins, maintain short return paths, and provide adequate via access around the dense perimeter and thermal-pad area. The 110 available I/O should be allocated early because escape routing can become the limiting constraint in multi-layer layouts.
Design the regulator for the full 1.71 V to 3.6 V operating range and account for startup, load transients, and sleep-mode current at the board level. The MCU's 305 nA VBAT mode and 33 nA shutdown figures describe device operating modes, not complete product consumption. External pull resistors, sensors, communication hardware, regulators, and leakage can dominate the final standby current, so measure the assembled design across its intended modes.
Estimate junction heating from actual 1.71 V to 3.6 V supply conditions, output activity, and the UFBGA thermal path. Although the 120 MHz Cortex-M4 can perform substantial computation, low-power periods and balanced I/O activity can reduce continuous switching load. Validate the final assembly using the manufacturer thermal guidance, local copper, adjacent heat sources, and the enclosure rather than relying only on the maximum CPU frequency.
Do not treat an alternative MPN as interchangeable solely because it uses a 132-pin package. Confirm the device identifier, memory configuration, exposed-pad requirements, temperature grade, pin multiplexing, bootloader behavior, DFSD configuration, USB support, and peripheral mapping. After substitution, rebuild the firmware for the new device, verify all GPIO assignments, and rerun timing, low-power, USB, and analog acquisition tests on the target board.
Separate sensitive sensor and DFSD paths from high-switching digital nets, and keep return currents continuous beneath active circuitry. The Cortex-M4 FPU and DFSD features can support precision acquisition, but package density and fast edge rates still require controlled impedance and return-path planning. Apply the manufacturer's high-speed guidance when routing clocks, USB, communications, and memory interfaces, and keep test points accessible for signal-integrity validation.
Información de cumplimiento
Compliance status must be confirmed from the current declarations and product documentation for the exact orderable MPN. The cited operating-temperature range does not by itself establish AEC-Q100 qualification.
