STM32L4R5VIT6 - 2MB Flash Cortex-M4 MCU 120MHz | STMicroelectronics
Référence : STM32L4R5VIT6 ✓ Actif| Qté | Prix unitaire | Total |
|---|---|---|
| 1 | $18.5 | $18,50 |
| 10 | $16.2 | $162,00 |
| 100 | $13.85 | $1 385,00 |
| 500 | $12.1 | $6 050,00 |
| 1 000 | $10.45 | $10 450,00 |
STM32L4R5VIT6 Présentation
An ARM Cortex-M4 MCU is a 32-bit RISC processor with Thumb-2 instruction set, an integrated single-precision FPU, and a rich interrupt controller (NVIC). It sits in the hierarchy microcontroller -> embedded processor -> semiconductor IC and serves as the central compute element in battery-powered and ultra-low-power embedded systems, replacing older 8/16-bit MCUs while adding DSP instructions and DSP/SIMD acceleration for sensor-fusion signal chains.
Key features include 2 MB dual-bank Flash allowing read-while-write firmware updates, 640 KB SRAM, an Octal-SPI interface and SD-card interface for external memory expansion, USB OTG full-speed, two 12-bit ADCs (5 Msps), two 12-bit DACs, a digital filter for Sigma-Delta modulators (DFSDM), an LCD-TFT display controller and an optional MIPI-DSI interface on higher part numbers. The integrated SMPS step-down converter plus ultra-low-power modes (down to sub-µA STOP and STANDBY currents) make the device ideal for wearables, smart metering, and IoT edge nodes.
Architecturally, the STM32L4R5 family uses ST's 90 nm ultra-low-leakage process with an on-chip voltage regulator that can switch between LDO and an external SMPS for higher efficiency at moderate loads. This dual-mode regulator is one of the L4+ family's main architectural advances over earlier STM32L4 devices, cutting active current by ~50% at 1.8 V systems.
Typical applications include wearable fitness/health bands, smart watches, industrial sensor hubs, low-power IoT gateways, USB-C powered human-interface devices, smart metering with LCD/TFT display, and portable medical devices such as glucose meters or pulse oximeters. The combination of large memory, MIPI-DSI display support, and ultra-low-power modes also suits high-end consumer HMI panels.
When designing in this MCU, allocate the 2 MB dual-bank Flash layout from the start: select a bootloader in bank 1 that can swap banks for OTA. Use the built-in DFSDM for low-power sensor acquisition and reserve at least 64 KB of SRAM for the GUI framebuffer when using the LCD-TFT peripheral.
This page synthesizes distributor stock, current 1K pricing, and pin-compatible alternatives not found on a single vendor page, giving engineers a single source for sourcing and second-source decisions on the STM32L4R5VIT6.
Alternatives de remplacement direct pour STM32L4R5VIT6 — 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 STM32L4R5VIT6 (même facteur de forme et même empreinte) — différant par Package, ADC, DAC, USB, Maximum Clock Frequency.
Outil de comparaison rapide — sélectionnez des références alternatives pour une comparaison côte à côte :
STM32L4R5VGT6
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
STM32L4S5VIT6
✅ Remplacement direct✓ En stock
$8.74 / unité
Voir la fiche technique →STM32L4R9VIT6
✅ Remplacement direct✓ En stock
$9.27 / unité
Voir la fiche technique →STM32L496VGY6TR
✅ Remplacement direct✓ En stock
$8.92 / unité
Voir la fiche technique →STM32L471ZGT6
✅ Remplacement direct✓ En stock
$7.49 / unité
Voir la fiche technique →STM32L4R5VIT6 Valeurs maximales et caractéristiques électriques
| Architecture | ARM Cortex-M4 32-bit RISC with FPU |
| Fréquence d'horloge maximale | 120 MHz (150 DMIPS) |
| Program Memory (Flash) | 2 MB (dual-bank, read-while-write) |
| SRAM | 640 KB |
| Operating Voltage Range | 1.71 V to 3.6 V |
| I/O Voltage Range | 1.08 V to 3.6 V (independent VDDIO) |
| Boîtier | 100-pin LQFP (14x14 mm) |
| GPIO Count | 83 (typical) |
| ADC | 2x 12-bit, 5 Msps |
| DAC | 2x 12-bit |
| Communication Interfaces | USB OTG FS, 3x SPI, 3x I2C, 6x USART, 2x UART, 2x CAN, 1x SDMMC |
| Display Interface | LCD-TFT controller; MIPI-DSI on higher part numbers |
| External Memory Interface | Octal-SPI, SDMMC, FSMC (SRAM/NOR/NAND) |
| Low-Power Modes | STOP, STANDBY, SHUTDOWN; integrated SMPS step-down |
| Température de fonctionnement | -40C to +85C (industrial grade) |
| Type de montage | Surface Mount |
| Statut RoHS | Compliant |
Guide de configuration des broches du STM32L4R5VIT6 100-pin lqfp (14x14 mm)
Configuration des broches du STM32L4R5VIT6 (boîtier 100-pin lqfp (14x14 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 STM32L4R5VIT6.
Consultez la fiche technique pour la configuration complète des broches.
Applications typiques
STM32L4R5VIT6 convient pour 6 applications: Wearable Fitness / Health Bands, Smart Metering and IoT Edge Nodes, Industrial HMI with TFT-LCD Display, Portable Medical Devices, USB Type-C Human Interface Devices, Smart Home Sensor Hubs.
Wearable Fitness / Health Bands
The STM32L4R5VIT6 is ideally suited for wearable fitness and health bands thanks to its integrated SMPS reaching sub-µA quiescent current in STOP/STANDBY modes and the Cortex-M4 with FPU at 120 MHz enabling on-device sensor fusion. Its two 5 Msps 12-bit ADCs and hardware DFSDM can directly interface with analog and digital Σ-Δ MEMS sensors (accelerometer, PPG, temperature) without an external codec. The 2 MB dual-bank Flash supports BLE-stack OTA with read-while-write updates, and the 640 KB SRAM (with 128 KB of fast CCM) handles ring-buffer audio capture for heart-rate variability. With a supply range of 1.71-3.6 V, the device can run directly from a single coin cell or Li-ion battery.
Recommandé
Smart Metering and IoT Edge Nodes
For electricity, gas and water meters plus wireless IoT edge nodes, the STM32L4R5VIT6 provides 2 MB of Flash for protocol stacks (LoRaWAN, Wireless M-Bus, Sigfox) and 640 KB of SRAM for metering algorithm buffers, all while staying under 100 µA/MHz active. The integrated SMPS reduces bill-of-materials by removing an external regulator, and the Octal-SPI interface connects directly to external NOR or PSRAM for logging data when network connectivity is intermittent. The two 12-bit ADCs combined with the built-in op-amp and voltage reference enable accurate metrology-class analog front ends (Class 0.5 metering accuracy typical). Operating down to 1.71 V also suits multi-cell battery-powered flow meters.
Recommandé
Industrial HMI with TFT-LCD Display
The STM32L4R5VIT6 integrates an LCD-TFT controller capable of driving displays up to XGA resolution, which makes it a cost-effective main MCU for industrial HMI panels and appliance control screens below 7-inch in size. The 640 KB SRAM provides framebuffer space for compact GUIs (typically 16-bit 800x480), and the 2 MB Flash leaves room for the LVGL/Embedded Wizard graphical stack. The integrated SMPS keeps the panel backlight driver and main MCU on the same 3.3 V rail, lowering BOM cost. The dual-bank Flash also enables safe panel firmware OTA, a requirement in Industry 4.0 deployments.
Recommandé
Portable Medical Devices
For portable medical devices such as pulse oximeters, glucose meters, and ambulatory ECG patches, the STM32L4R5VIT6 offers the right balance of low-power DSP compute (via the Cortex-M4 with FPU) and analog integration (dual 12-bit ADCs, dual op-amps). The Cortex-M4 SIMD instructions accelerate heart-rate-variability digital filter loops, while the hardware DFSDM directly interfaces with Σ-Δ sensors - a common architecture in medical electronics. The integrated SMPS and sub-µA STOP modes stretch battery life beyond one year on a single Li-coin cell. The 100-pin LQFP offers 83 GPIO to drive displays, audio alerts, and BLE antennas without extending to a larger package.
Recommandé
USB Type-C Human Interface Devices
The STM32L4R5VIT6 includes a USB OTG full-speed peripheral with internal PHY and USB-Power Delivery support, making it a strong fit for USB Type-C keyboards, mice, gaming peripherals, and audio interfaces. The 120 MHz Cortex-M4 handles HID class drivers with margin, while the 640 KB SRAM accommodates USB audio buffering. Hardware encryption on the L4S5 sibling and dual-bank Flash enable signed-firmware updates required for USB-IF certified devices. The 100-pin LQFP is a strong match for through-hole USB-C connector designs and ergonomic plastics.
Recommandé
Smart Home Sensor Hubs
The STM32L4R5VIT6 sits well as the central controller of smart-home sensor hubs (Zigbee/Z-Wave/Matter bridges) because it can drive multiple serial peripherals (6x USART, 3x SPI, 3x I2C, two CAN) to bridge radio co-processors without an external bus mux. Its Cortex-M4 at 120 MHz runs Bluetooth/Matter application stacks concurrently with real-time sensor polling, and the SMPS keeps total board power under 100 mW - useful for always-on hubs. The 2 MB Flash supports the large persistent Matter-attestation credential store; the 640 KB SRAM handles multi-protocol message queues.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour STM32L4R5VIT6 — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | STM32L4R5VGT6 | STM32L4S5VIT6 | STM32L4R9VIT6 | STM32L496VGY6TR | STM32L471ZGT6 |
|---|---|---|---|---|---|---|
| Brand | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics |
| Package | 100-pin LQFP (14x14 mm) | 100-pin LQFP (14x14 mm) - same | 100-pin LQFP (14x14 mm) - same | 100-pin LQFP (14x14 mm) - same | 100-pin WLCSP - smaller footprint | 144-pin LQFP - larger footprint |
| Core Architecture | ARM Cortex-M4F (FPU) @ 120 MHz | Cortex-M4F @ 120 MHz | Cortex-M4F @ 120 MHz | Cortex-M4F @ 120 MHz | Cortex-M4F @ 80 MHz | Cortex-M4F @ 80 MHz |
| Flash Memory | 2 MB dual-bank | 2 MB dual-bank | 2 MB dual-bank | 2 MB dual-bank | 1 MB | 1 MB (up to 2 MB family variants) |
| SRAM | 640 KB | 640 KB | 640 KB | 640 KB | 320 KB | 128 KB |
| Integrated SMPS | Yes | Yes | Yes | Yes | No (LDO only) | No (LDO only) |
| Hardware Crypto | No | No | AES-256/SHA-256/OTFDEC | No | AES-256 (L4S class only) | No |
| Display Interface | LCD-TFT controller | LCD-TFT controller | LCD-TFT controller | LCD-TFT + MIPI-DSI | LCD parallel only | LCD-TFT controller |
| USB OTG | USB OTG FS | USB OTG FS | USB OTG FS | USB OTG FS | USB OTG FS | USB OTG FS |
Principaux différenciateurs
- Highest memory and clock in the L4+ family (vs STM32L496VGY6TR (1 MB Flash, 80 MHz))
- Integrated SMPS step-down converter reduces active current (vs STM32L471ZGT6 (LDO only))
- Dual-bank 2 MB Flash with read-while-write OTA (vs STM32L4R9VIT6 family variant)
Notes de conception
The STM32L4R5VIT6 supports two power-rail modes selectable via the RCC->APB1ENR PWREN and the PWR->CR LPDS/SMPSEN bits: integrated SMPS step-down (lower active current, ~50% saving on the core rail) or legacy LDO (lowest analog noise on AVDD). For wearable designs route the LQFP-100 VCORE and VDD pins to dedicated planes and follow ST's AN4621 'STM32L4+ SMPS layout' guide for placement. Decouple VCORE with 4.7 µF X7R 0402/0603 ceramic + 100 nF X7R 0201 at the IC pins, and place them within 2 mm of the exposed-pad vias to suppress switching ripple during 32 MHz PLL operation.
The 100-pin LQFP (14x14 mm body, no exposed thermal pad on this package variant) has a theta_JA around 65 °C/W on a 2s2p JEDEC board. At full active MIPS (120 MHz/150 DMIPS) the 3.3 V core draws ~10 mA, so self-heating typically adds 4-7 °C. Ensure the PCB has at least 1 oz copper on all four inner planes connected to GND; for industrial designs operating to +85 °C ambient we recommend keeping junction rise under 60 °C, which is achievable because the 10 mA core current is far below the 100 mA thermal ceiling of this package.
Avoid three common pitfalls. (1) Don't leave the L4+ internal SMPS inductor unpopulated - the datasheet pin map shows LQFP-100 pins 13-14 are VLCD/VREFBUF-adjacent, but the SMPS coil goes on pins 99-100 (PWR_L1/PWR_L2); absence will leave the core unpowered. (2) The 100-pin LQFP and the 100-pin TFBGA are not pin-compatible despite identical pin counts - footprint pads are different. (3) When migrating from STM32L4 (non-Plus) to STM32L4R5, the PWR->CR register offsets and the new SMPS calibration NVM bits (SMPS_FORCED) require re-running your firmware's SystemClock_Config() against the L4+ CubeMX initialization template, or the device may hard-fault during PLL startup.
Informations de conformité
RoHS/REACH compliance per ST product page; industrial-grade operating temperature -40 °C to +85 °C (the 'I' suffix). Not AEC-Q100 qualified - for automotive designs use the STM32L4R5VxTx7A or other AEC-Q100 parts in the same family. Halogen-free per ST's package datasheet.
