STM32L021K4T6 - 32MHz 16KB Ultra-Low-Power MCU | STMicroelectronics
Référence : STM32L021K4T6 ✗ Fin de vie| Qté | Prix unitaire | Total |
|---|---|---|
| 1 | $2.9117 | $2,91 |
| 10 | $2.65 | $26,50 |
| 100 | $2.25 | $225,00 |
| 500 | $1.95 | $975,00 |
| 1 000 | $1.7 | $1 700,00 |
| 3 000 | $1.5 | $4 500,00 |
STM32L021K4T6 Présentation
An ultra-low-power microcontroller is designed to minimize energy consumption while maintaining responsive control, measurement, communications, and security functions. The STM32L021K4T6 belongs to the STM32L0 family, combines a RISC-based Cortex-M0+ core with embedded Flash, SRAM, analog and digital peripherals, and is intended for systems where low standby current and active processing efficiency are important.
Key verified attributes include a 32 MHz maximum clock, 16 KB Flash, 2 KB SRAM, a 12-bit ADC, 512 bytes of EEPROM according to the indexed datasheet result, AES support, and a 32-LQFP package. These resources support compact sensor nodes, low-power measurement equipment, simple security-enabled controls, and general embedded products that do not require the memory or processing capacity of a higher-end STM32 device.
The Cortex-M0+ architecture provides a 32-bit instruction set while maintaining a small, energy-conscious design footprint. The STM32L0 family’s reset and supply-management functions help support reliable startup and low-power operation. Designers should verify exact peripheral availability, pin multiplexing, voltage limits, clock settings, and current consumption against the manufacturer datasheet for the selected orderable variant.
Typical applications include battery-powered sensors, compact industrial controllers, low-power measurement instruments, secure embedded gateways, portable accessories, and small consumer devices. The 32-LQFP 7 mm × 7 mm package supports conventional surface-mount assembly and provides a practical option for designs that need more exposed pins than a small leadless package provides.
The main design consideration is selecting firmware and peripherals around the verified 16 KB Flash and 2 KB SRAM limits. Developers should reserve memory for the bootloader, application code, stack, data, and upgrade requirements, and should confirm the exact pin functions needed by the PCB before layout. This page combines verified manufacturer and distributor information with practical selection guidance and explicitly identifies parameters that still require datasheet confirmation.
Alternatives de remplacement direct pour STM32L021K4T6 — 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 STM32L021K4T6 (même facteur de forme et même empreinte) — différant par Package.
Outil de comparaison rapide — sélectionnez des références alternatives pour une comparaison côte à côte :
STM32L021K4T7
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
STM32L011K4T6
✅ Remplacement direct✓ En stock
Contactez-nous pour le prix
Voir la fiche technique →STM32L011K4T7
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
STM32L010K4T6TR
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
STM32L021K4T6 Valeurs maximales et caractéristiques électriques
| Product Type | 32-bit ultra-low-power microcontroller |
| CPU Core | Arm Cortex-M0+ |
| Maximum CPU Frequency | 32 MHz |
| Flash Memory | 16 KB |
| SRAM | 2 KB |
| EEPROM | 512 bytes |
| ADC | 12-bit ADC |
| Security Feature | AES hardware encryption |
| Architecture | 32-bit RISC |
| Boîtier | 32-LQFP (7 mm × 7 mm) |
| Type de montage | Surface Mount |
| Product Series | STM32L0 access line |
| Supply Management | Reset and supply management |
| Statut RoHS | unknown |
| REACH Status | unknown |
Guide de configuration des broches du STM32L021K4T6 32-lqfp (7 mm × 7 mm)
Configuration des broches du STM32L021K4T6 (boîtier 32-lqfp (7 mm × 7 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 STM32L021K4T6.
Consultez la fiche technique pour la configuration complète des broches.
Applications typiques
STM32L021K4T6 convient pour 6 applications: Battery-Powered Sensor Nodes, Compact Industrial Control, Low-Power Measurement Instrument, Secure Embedded Gateway, Portable Accessory Controller, Small Consumer Device.
Battery-Powered Sensor Nodes
The STM32L021K4T6 fits compact battery-powered sensor nodes because it combines a 32 MHz Arm Cortex-M0+ core with the STM32L0 ultra-low-power family positioning. A 16 KB Flash and 2 KB SRAM budget is sufficient for carefully sized embedded applications that collect sensor data, run lightweight control logic, and wake periodically. Its 12-bit ADC is useful for analog sensing, while the verified 32-LQFP 7 mm × 7 mm package keeps the design compact and accessible for assembly. The main trade-off is memory: developers must budget stack, buffers, application code, and any wireless or logging features without exceeding the available resources.
Recommandé
Compact Industrial Control
The STM32L021K4T6 can serve as the control core for compact industrial modules where a small microcontroller, analog measurement, and basic security are needed without a high-pin-count processor. The 32 MHz Cortex-M0+ core provides responsive control execution, the 12-bit ADC supports sensor and process-voltage acquisition, and AES hardware encryption helps protect communications or stored data when implemented correctly. The 32-LQFP package provides accessible leads for inspection and hand soldering during prototyping. Designers should verify the exact GPIO, timer, serial-interface, and supply assignments in the datasheet before finalizing a multi-rail controller.
Recommandé
Low-Power Measurement Instrument
The STM32L021K4T6 is appropriate for a low-power measurement instrument that prioritizes a small controller and direct analog acquisition. Its 12-bit ADC can evaluate the suitability of the instrument for sensor signals, while the 32 MHz core supports responsive sampling, calibration, and user-interface updates. The ultra-low-power family positioning is useful for portable instruments that spend significant time idle, although actual battery life depends on the selected low-power modes and clock configuration. The limited 16 KB Flash and 2 KB SRAM require a compact firmware architecture and careful use of buffers.
Recommandé
Secure Embedded Gateway
The STM32L021K4T6 can be evaluated for a small secure embedded gateway when the design needs local control, analog inputs, and hardware-assisted encryption without a larger microcontroller. AES hardware capability can reduce processor workload for supported cryptographic operations, while the Cortex-M0+ core handles protocol and control tasks. The device’s constrained memory means gateway functionality must be scoped tightly: routing tables, buffering, firmware updates, and security material can quickly exceed 16 KB Flash or 2 KB SRAM. Verify the exact AES implementation, key-management assumptions, peripheral mapping, and boot requirements with STMicroelectronics documentation.
Recommandé
Portable Accessory Controller
The STM32L021K4T6 is suitable for a compact portable accessory controller where low-power operation, local input handling, and secure control are more important than maximum compute throughput. Its 32 MHz Cortex-M0+ core can manage button logic, status indicators, sensor monitoring, and low-rate communications, while AES support can assist selected encrypted operations. The 32-LQFP package is practical for a small PCB and conventional surface-mount production. Before release, confirm low-power current, wake sources, supply range, and peripheral pin multiplexing because these details are not present in the supplied search snippets.
Recommandé
Small Consumer Device
The STM32L021K4T6 can support small consumer devices that need embedded control, analog measurement, and basic security in a compact package. Its 32 MHz core is suitable for event handling and short control tasks, and its 12-bit ADC can be used for simple user or environmental sensing. The device’s 16 KB Flash and 2 KB SRAM make firmware planning especially important when adding display, wireless, storage, or user-interface functions. The STM32L0 low-power positioning may improve battery life, but the final result depends on the selected sleep mode, peripheral activity, and duty cycle.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour STM32L021K4T6 — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | STM32L021K4T7 | STM32L011K4T6 | STM32L011K4T7 | STM32L010K4T6TR |
|---|---|---|---|---|---|
| Package | 32-LQFP (7 mm × 7 mm) | 32-LQFP (7 mm × 7 mm) | 32-LQFP (7 mm × 7 mm) | 32-LQFP (7 mm × 7 mm) | 32-LQFP (7 mm × 7 mm) |
| Brand | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics |
| CPU Core | Arm Cortex-M0+ | Related STM32L0 Cortex-M0+ family; exact verification needed | Arm Cortex-M0+ family; exact verification needed | Arm Cortex-M0+ family; exact verification needed | Arm Cortex-M0+ value line; exact verification needed |
| Maximum CPU Frequency | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz |
| Flash Memory | 16 KB | 16 KB | 16 KB | 16 KB | 16 KB |
| SRAM | 2 KB | Exact SRAM comparison requires datasheet | Exact SRAM comparison requires datasheet | Exact SRAM comparison requires datasheet | Exact SRAM comparison requires datasheet |
| ADC | 12-bit ADC | Exact ADC configuration requires datasheet | Exact ADC configuration requires datasheet | Exact ADC configuration requires datasheet | Exact ADC configuration requires datasheet |
| AES Hardware Encryption | AES hardware encryption | Verify exact cryptographic peripheral support | Verify exact cryptographic peripheral support | Verify exact cryptographic peripheral support | Verify exact cryptographic peripheral support |
| Special Features | Ultra-low-power STM32L0 access line | Related STM32L0 variant; exact feature differences require datasheet | Related STM32L0 variant; exact feature differences require datasheet | Related STM32L0 variant; exact feature differences require datasheet | STM32L0 value line; exact feature differences require datasheet |
Principaux différenciateurs
- Verified low-power STM32L0 positioning with AES capability (vs STM32L010K4T6TR)
- 32 MHz Cortex-M0+ processing with 16 KB Flash (vs STM32L011K4T6)
- Compact 32-LQFP footprint with direct analog and security functions (vs STM32L021K4T7)
Notes de conception
The verified data establishes the STM32L0 ultra-low-power family positioning but does not provide the STM32L021K4T6 supply range or active, sleep, and standby currents. Before battery sizing, obtain the official datasheet and measure the intended clock, GPIO, ADC, and communications configuration. Keep unused peripherals disabled, avoid floating inputs, and use the lowest safe system clock when the application permits. Estimated power calculations cannot be made from the supplied data because the required voltage and current values are not available.
The device is specified in a 32-LQFP 7 mm × 7 mm package, so route the exposed leads and provide adequate solderable land geometry for the chosen assembly process. Confirm the official pinout, power pins, ground pins, reset behavior, and debug/programming connections before routing. Place decoupling and support components close to their associated pins, and check whether the selected package has an exposed pad requirement in the exact orderable variant. The complete pin map is marked as unavailable because it was not present in the verified data.
Do not assume that a related STM32L0 suffix is automatically interchangeable. STM32L021K4T7, STM32L011K4T6, STM32L011K4T7, and STM32L010K4T6TR are listed as cross-reference candidates, but the supplied data does not prove identical pin mapping, voltage limits, peripheral availability, memory, or temperature grade. For a replacement, compare the official pin tables, clock tree, memory map, boot options, ADC characteristics, security block, package drawings, and absolute maximum ratings before approving substitution.
Informations de conformité
The supplied verified sources confirm product identity, core, memory, ADC, AES, package, and distributor listings but do not state RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals status.
