STM32L4S5ZIT6 - 120MHz, 2MB Flash MCU | STMicroelectronics
Référence : STM32L4S5ZIT6 ✓ ActifSTM32L4S5ZIT6 Présentation
An ultra-low-power microcontroller is an embedded processing device optimized to minimize energy consumption while retaining real-time processing, memory, communication, and peripheral capabilities. The STM32L4+ architecture sits within the STM32 portfolio as a 32-bit Arm Cortex-M4 platform. Its combination of 120 MHz processing performance and 2 MB of embedded Flash supports control tasks, human-machine interfaces, communications, data acquisition, and firmware of moderate complexity without requiring an external memory device.
The STM32L4S5ZIT6 integrates 2 MB of Flash organized as 2M x 8 and 640 KB of SRAM. Manufacturer and distributor listings identify the device as a single-core, ultra-low-power microcontroller with a floating-point unit. Its documented feature set includes USB OTG, DFSDM, Chrom-ART acceleration, AES-256 encryption, and HASH hardware, reducing the processing burden for USB connectivity, audio or signal conversion, graphics-oriented operations, and cryptographic workflows.
The 120 MHz Arm Cortex-M4 core provides substantially more compute headroom than lower-frequency microcontroller families while retaining an efficient embedded architecture. Dedicated hardware for AES-256 and HASH supports security-sensitive data handling, while DFSDM provides a dedicated path for digital signal conversion. Chrom-ART hardware accelerates suitable graphics and display operations, helping preserve application-processing and power-management performance.
Typical applications include USB-connected industrial peripherals, low-power sensor nodes, compact medical monitoring equipment, building-control terminals, secure access devices, and connected consumer products. The 144-LQFP package provides 144 external connection points, making it suitable for designs that require broader peripheral access than small-outline packages while remaining straightforward to assemble using conventional leaded-package production methods.
Designers should preserve the power-budget and decoupling requirements stated in the manufacturer documentation, especially when the USB, DFSDM, cryptography, or high-speed peripherals are active. Firmware support, peripheral configuration, clock selection, and low-power transitions must be validated for the intended application. A 144-LQFP footprint should be checked against the exact pin assignments and exposed thermal requirements before layout release.
This page combines manufacturer-family positioning, verified distributor specifications, package details, application guidance, and engineering-focused selection criteria. It also distinguishes confirmed device attributes from parameters that require confirmation in the complete STM32L4S5 datasheet, helping engineers assess suitability without confusing similar STM32L4+ members.
Alternatives de remplacement direct pour STM32L4S5ZIT6 — 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 STM32L4S5ZIT6 (même facteur de forme et même empreinte) — différant par Package, Operating Temperature Range, ADC, DAC, Flash Memory.
STM32L4S5ZI
✅ Remplacement direct ⚠️ Spécifications non vérifiées📋 Alternative de référence (hors catalogue)
STM32L4S7ZI
✅ Remplacement direct ⚠️ Spécifications non vérifiées📋 Alternative de référence (hors catalogue)
STM32L4S9ZIT6
✅ Remplacement direct ⚠️ Spécifications non vérifiéesContactez-nous pour le prix
Voir la fiche technique →STM32L4S5ZIT6 Valeurs maximales et caractéristiques électriques
| Product Type | 32-bit ultra-low-power microcontroller |
| Manufacturer | STMicroelectronics |
| Series | STM32L4+ Series |
| Processor Core | Arm Cortex-M4, 32-bit RISC |
| Fréquence d'horloge maximale | 120 MHz |
| Flash Memory | 2 MB (2M x 8) |
| SRAM | 640 KB |
| Core Count | 1 core |
| FPU | Yes |
| USB Interface | USB OTG |
| Digital Filter | DFSDM |
| Graphics Accelerator | CHROM-ART |
| Encryption Accelerator | AES-256 |
| Hash Accelerator | HASH |
| Boîtier | 144-LQFP, 20 x 20 mm |
| Type de montage | Surface mount |
Guide de configuration des broches du STM32L4S5ZIT6 144-lqfp, 20 x 20 mm
Configuration des broches du STM32L4S5ZIT6 (boîtier 144-lqfp, 20 x 20 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 STM32L4S5ZIT6.
Consultez la fiche technique pour la configuration complète des broches.
Applications typiques
STM32L4S5ZIT6 convient pour 6 applications: USB-connected industrial control terminal, Low-power environmental sensor node, Portable medical monitoring device, Digital audio and signal acquisition, Secure access and credential controller, Building automation and HVAC controller.
USB-connected industrial control terminal
STM32L4S5ZIT6 fits a USB-connected industrial terminal because its Arm Cortex-M4 core operates up to 120 MHz while dedicated USB OTG handles device connectivity. The 2 MB Flash provides room for control firmware, parameter storage, and diagnostics, and 640 KB of SRAM supports protocol buffers and user-interface state. AES-256 and HASH hardware can accelerate authenticated data handling. Keep USB routing, impedance, power, and grounding consistent with the manufacturer reference design, and validate suspend-current behavior when the equipment operates from an external supply.
Recommandé
Low-power environmental sensor node
The STM32L4S5ZIT6 is suitable for an environmental sensor node that must combine periodic sensing with local processing and communication. Its 2 MB of Flash can store firmware, calibration coefficients, and configuration, while 640 KB of SRAM can accommodate acquisition buffers without an external memory device. The 120 MHz Cortex-M4 core provides margin for filtering and protocol processing between sensor transactions. DFSDM is valuable for suitable digital sensor front ends, and low-power performance should be evaluated using the device-specific sleep-mode currents and the node's actual duty cycle.
Recommandé
Portable medical monitoring device
STM32L4S5ZIT6 can serve as the central controller in a portable medical monitoring device where processing, memory, and energy efficiency must coexist in a 144-LQFP package. The 120 MHz Arm Cortex-M4 core can execute control, filtering, and communication tasks, while 2 MB Flash and 640 KB SRAM avoid external memory in many compact designs. AES-256 and HASH hardware support security-sensitive workflows, but medical use requires application-specific validation, including electrical safety, firmware risk controls, and confirmation of the relevant operating grade.
Recommandé
Digital audio and signal acquisition
STM32L4S5ZIT6 is well suited to digital audio and signal-acquisition equipment because DFSDM provides a dedicated conversion-data path and the 120 MHz Cortex-M4 core can manage buffering and control logic. The 2 MB Flash capacity supports firmware and configuration, while 640 KB of SRAM accommodates sample and processing buffers. CHROM-ART can accelerate suitable display or graphics operations in a monitoring product. Actual signal-chain performance depends on the selected converter, analog front end, sampling rate, clocking, and timing margin, all of which must be evaluated together.
Recommandé
Secure access and credential controller
STM32L4S5ZIT6 fits a secure access controller because AES-256 and HASH hardware offload cryptographic operations from the 120 MHz Arm Cortex-M4 core. The 2 MB Flash can hold firmware and access-policy data, and the 144-LQFP package exposes a broad set of external pins for readers, communication interfaces, indicators, and supporting circuitry. Hardware acceleration alone does not establish system security: key provisioning, protected boot, certificate validation, update procedures, and physical attack resistance must be implemented and reviewed as part of the complete design.
Recommandé
Building automation and HVAC controller
STM32L4S5ZIT6 can manage a building-automation or HVAC controller that combines sensor acquisition, local logic, communications, and user feedback. Its 2 MB Flash and 640 KB SRAM are sufficient for embedded control firmware and multiple communication tasks without requiring external memory, while the 120 MHz core provides timing margin for protocol handling and control loops. DFSDM is useful for suitable sensor interfaces, and USB OTG can simplify commissioning or service access. Production validation should cover operating-temperature behavior, watchdog strategy, bus timing, and low-power requirements.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour STM32L4S5ZIT6 — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | STM32L4S5ZI | STM32L4S7ZI | STM32L4S9ZI |
|---|---|---|---|---|
| Package | LQFP-144, 20 x 20 mm | LQFP-144 | LQFP-144 | LQFP-144 |
| Brand | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics |
| Core | Arm Cortex-M4, 32-bit | Arm Cortex-M4, 32-bit | Arm Cortex-M4, 32-bit | Arm Cortex-M4, 32-bit |
| Maximum Frequency | 120 MHz | 120 MHz | 120 MHz | 120 MHz |
| USB | USB OTG | USB OTG | USB OTG | USB OTG |
| Digital Filter | DFSDM | DFSDM | DFSDM | DFSDM |
| Cryptographic Acceleration | AES-256 and HASH | AES-256 and HASH | AES-256 and HASH | AES-256 and HASH |
Principaux différenciateurs
- Confirmed 120 MHz processing with dedicated acceleration resources (vs STM32L4S7ZI)
- Confirmed embedded-memory allocation for standalone designs (vs STM32L4S9ZI)
- Single-vendor family continuity for firmware and peripheral support (vs STM32L4S5ZI)
Notes de conception
Use the manufacturer power-supply and decoupling recommendations for every supply rail. The 120 MHz Cortex-M4 core, USB OTG, DFSDM, cryptography, and graphics accelerator can change dynamic current depending on workload and clock configuration. Place required bulk and local decoupling capacitors close to their associated pins, provide clean power for USB data lines, and avoid deriving sensitive analog or digital loads through shared narrow copper paths.
Route USB, DFSDM, and other speed-sensitive interfaces using continuous reference planes and manufacturer-recommended topology. The 144-LQFP footprint offers ample pins, but the dense lead pitch still requires careful fan-out and escape routing. Keep clock lines short, isolate noisy switching nodes from sensitive inputs, and maintain appropriate return paths beneath high-speed signals. Validate the final layout with signal-integrity and EMC testing appropriate to the product environment.
Do not treat related STM32L4+ part numbers as automatically interchangeable. Even when the package and processor family match, embedded memory, peripheral assignments, alternate functions, interrupts, clock limits, and temperature ordering codes may differ. Before replacing STM32L4S5ZIT6, compare the manufacturer ordering-information table, pin table, electrical characteristics, memory map, bootloader behavior, and device support package with the currently approved component.
Informations de conformité
No product-specific RoHS, REACH, halogen-free, lead-free, or conflict-minerals status is stated in the accessible product information. Confirm current declarations and the exact ordering-code qualification status with STMicroelectronics before procurement.