ATSAMA5D21B-CUR - 500MHz Cortex-A5 MPU | Microchip
Référence : ATSAMA5D21B-CUR ✓ Actif| Qté | Prix unitaire | Total |
|---|---|---|
| 1 | $12.85 | $12,85 |
| 10 | $11.57 | $115,70 |
| 100 | $10.28 | $1 028,00 |
| 500 | $9.42 | $4 710,00 |
| 1 000 | $8.56 | $8 560,00 |
ATSAMA5D21B-CUR Présentation
An embedded microprocessor unit (MPU) is a general-purpose processor core intended to run a full operating system such as Linux, as distinct from a microcontroller (MCU) that typically runs bare-metal or RTOS firmware. Within the product hierarchy, the SAMA5D2 is an application-class MPU built on the ARM Cortex-A5 architecture, which itself belongs to the ARMv7-A family of 32-bit application processors. The Cortex-A5 delivers roughly 1.57 DMIPS/MHz with an optional NEON SIMD unit, positioning it between the low-end Cortex-M class and the higher-performance Cortex-A7/A9 cores.
Key features of the ATSAMA5D21B-CUR include a 500 MHz maximum core clock, 128 KB internal SRAM, a 16-bit DDR2/DDR3L/LPDDR2/LPDDR3 external memory controller, and support for QSPI and e.MMC flash. The device integrates an embedded audio subsystem with a fractional PLL, a 12-bit ADC, and a comprehensive security block including secure boot, TRNG, and tamper detection. Its ultra-low-power architecture reaches 5 uA in backup mode, making it suitable for battery-backed designs.
The SAMA5D2 architecture uses a 32-bit ARMv7-A core with 32 KB instruction and 32 KB data L1 caches, a 128 KB L2 cache, and a multi-layer AHB bus matrix. The 0.8 mm ball pitch TFBGA package reduces PCB design complexity compared with finer-pitch alternatives, allowing lower-cost fabrication and simpler routing for 4- to 6-layer boards.
Typical applications include industrial HMI panels, IoT gateways, point-of-sale terminals, building automation controllers, and portable medical devices. The combination of 500 MHz performance, integrated audio, and 5 uA backup current fits designs that must wake quickly from sleep while maintaining long battery life.
When designing with this MPU, pay close attention to the DDR memory routing and the power sequencing of the 1.2 V core, 1.8 V/3.3 V I/O, and 1.8 V DDR rails. The SAMA5D2 reference design and the SAMA5D2 Xplained Ultra evaluation kit provide validated schematics and layout guidance.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet, giving engineers a single reference for sourcing and integration decisions.
Alternatives de remplacement direct pour ATSAMA5D21B-CUR — 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 ATSAMA5D21B-CUR (même facteur de forme et même empreinte) — différant par Package, External Memory Support, Ethernet, Backup Mode Current, Core Architecture.
Outil de comparaison rapide — sélectionnez des références alternatives pour une comparaison côte à côte :
ATSAMA5D21B-CU
✅ Remplacement direct✓ En stock
$9.8 / unité
Voir la fiche technique →ATSAMA5D21B-CUR
✅ Remplacement direct✓ En stock
$8.56 / unité
Voir la fiche technique →ATSAMA5D22B-CUR
✅ Remplacement direct ⚠️ Spécifications non vérifiées✓ En stock
$9.1 / unité
Voir la fiche technique →ATSAMA5D24B-CUR
✅ Remplacement direct ⚠️ Spécifications non vérifiées✓ En stock
$5.5 / unité
Voir la fiche technique →ATSAMA5D27B-CUR
✅ Remplacement direct ⚠️ Spécifications non vérifiées✓ En stock
$11.85 / unité
Voir la fiche technique →ATSAMA5D21B-CUR Valeurs maximales et caractéristiques électriques
| Core Processor | ARM Cortex-A5 |
| Core Architecture | 32-bit ARMv7-A |
| Number of Cores | 1 |
| Fréquence d'horloge maximale | 500 MHz |
| Internal SRAM | 128 KB |
| L1 Cache | 32 KB instruction + 32 KB data |
| L2 Cache | 128 KB |
| External Memory Support | DDR2, DDR3L, LPDDR2, LPDDR3, QSPI, e.MMC |
| Boîtier | 196-TFBGA (11x11 mm) |
| Ball Pitch | 0.8 mm |
| Température de fonctionnement | -40C to +85C |
| Backup Mode Current | 5 uA |
| ADC Resolution | 12-bit |
| Audio Subsystem | Embedded (fractional PLL) |
| Security Features | Secure boot, TRNG, tamper detection |
| Type de montage | Surface Mount |
| Statut RoHS | Compliant |
Guide de configuration des broches du ATSAMA5D21B-CUR 196-tfbga (11x11 mm)
Configuration des broches du ATSAMA5D21B-CUR (boîtier 196-tfbga (11x11 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 ATSAMA5D21B-CUR.
Consultez la fiche technique pour la configuration complète des broches.
Applications typiques
ATSAMA5D21B-CUR convient pour 6 applications: Industrial HMI Panels, IoT Gateways, Point-of-Sale Terminals, Building Automation Controllers, Portable Medical Devices, Smart Vending and Retail Kiosks.
Industrial HMI Panels
The ATSAMA5D21B-CUR fits industrial human-machine interface panels because its 500 MHz Cortex-A5 core and 128 KB internal SRAM can drive a Linux framebuffer and touch controller without an external GPU. The 196-TFBGA 0.8 mm pitch package simplifies routing on the 4- to 6-layer boards typical of HMI products, and the integrated 12-bit ADC can sample resistive touch panels directly. Placed as the main application processor, it runs the GUI stack while the DDR3L controller feeds the frame buffer; the trade-off is that heavy 3D graphics must be offloaded or avoided, since the Cortex-A5 has no integrated GPU.
Recommandé
IoT Gateways
The ATSAMA5D21B-CUR is suited to IoT gateways because it combines 500 MHz application-class processing with 5 uA backup-mode current, allowing always-on network bridging with long battery-backed operation. The integrated DDR2/DDR3L/LPDDR2/LPDDR3 controller and QSPI/e.MMC flash support let designers build a complete gateway with minimal external memory components. In a typical topology the MPU runs the Linux network stack and protocol translation while a companion Cortex-M4 handles deterministic sensor polling; the trade-off is that the single Cortex-A5 core must share cycles between networking and application logic, so CPU headroom should be validated for high-throughput gateways.
Recommandé
Point-of-Sale Terminals
The ATSAMA5D21B-CUR suits point-of-sale terminals because its security block, including secure boot, TRNG, and tamper detection, supports the cryptographic requirements of payment processing. The 500 MHz Cortex-A5 core runs the payment application and display stack, while the embedded audio subsystem provides the beeper and voice prompts without an external codec. The 196-TFBGA package with 0.8 mm ball pitch keeps the main board manufacturable at low cost. The trade-off is that the device has no dedicated cryptographic accelerator for bulk AES, so designers should benchmark transaction throughput and consider offloading heavy crypto to a secure element.
Recommandé
Building Automation Controllers
The ATSAMA5D21B-CUR fits building automation controllers because its low-power architecture and 5 uA backup mode allow battery-backed real-time clocks and wake-on-event operation in HVAC and lighting nodes. The 500 MHz core runs the BACnet or Modbus stack while the 12-bit ADC samples analog sensors such as temperature and pressure transducers. The integrated DDR3L controller supports the memory footprint of a Linux-based controller. The trade-off is that the Cortex-A5 lacks hardware floating-point acceleration for heavy control loops, so deterministic PID loops are best delegated to a companion Cortex-M4 such as the ATSAM4S8CA-AU.
Recommandé
Portable Medical Devices
The ATSAMA5D21B-CUR is applicable to portable medical devices because its 5 uA backup current extends battery life in patient monitors and diagnostic instruments that sleep between measurements. The 500 MHz Cortex-A5 core processes sensor data and drives the display, while the 12-bit ADC digitizes physiological signals and the embedded audio subsystem provides alarm tones. The 196-TFBGA package supports compact board layouts. The trade-off is that medical designs require rigorous validation of the power sequencing and tamper-detection features, and the device is not AEC-Q100 or medical-grade qualified by default, so additional certification effort is required.
Recommandé
Smart Vending and Retail Kiosks
The ATSAMA5D21B-CUR fits smart vending and retail kiosks because it delivers 500 MHz application-class performance for touch UI, payment, and telemetry in a single low-cost MPU. The integrated DDR3L/LPDDR2 memory controller and QSPI/e.MMC flash support allow a compact Linux design, and the 0.8 mm ball pitch TFBGA keeps the main board affordable. In a typical kiosk the MPU runs the UI and cloud connectivity while a companion MCU manages motors and coin mechanisms. The trade-off is that the single Cortex-A5 core must handle UI rendering and network traffic concurrently, so memory bandwidth should be sized for the display resolution.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour ATSAMA5D21B-CUR — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | ATSAMA5D21B-CU | ATSAMA5D22B-CUR | ATSAMA5D24B-CUR | ATSAMA5D27B-CUR |
|---|---|---|---|---|---|
| Package | 196-TFBGA (11x11) | 196-TFBGA (11x11) - same | 196-TFBGA (11x11) - same | 196-TFBGA (11x11) - same | 196-TFBGA (11x11) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Core Processor | ARM Cortex-A5 | ARM Cortex-A5 | ARM Cortex-A5 | ARM Cortex-A5 | ARM Cortex-A5 |
| Maximum Clock Frequency | 500 MHz | 500 MHz | 500 MHz | 500 MHz | 500 MHz |
| Packaging | Tape & Reel | Tray | Tape & Reel | Tape & Reel | Tape & Reel |
Principaux différenciateurs
- Lowest-cost 500 MHz entry point in the SAMA5D2 family (vs ATSAMA5D28B-CN)
- 5 uA backup mode current (vs ATSAMA5D28B-CN)
- 0.8 mm ball pitch TFBGA (vs ATSAMA5D28B-CN)
Notes de conception
The SAMA5D2 family requires sequenced power rails: the 1.2 V core, 1.8 V/3.3 V I/O, and 1.8 V DDR supply must come up in the order specified by the datasheet to avoid latch-up and excessive inrush. Use a dedicated PMIC or a sequenced LDO arrangement, and verify that the reset signal is held low until all rails are stable. Estimated: at 500 MHz with typical peripheral activity the core rail draws on the order of 100-200 mA, so size the 1.2 V regulator for at least 300 mA of headroom.
The 196-TFBGA uses a 0.8 mm ball pitch, which permits 4- to 6-layer boards with conventional design rules rather than the finer-pitch HDI stackups required by 0.5 mm or 0.65 mm BGAs. Route the DDR2/DDR3L/LPDDR2/LPDDR3 bus as length-matched groups with controlled 50 ohm single-ended impedance, keep the memory devices close to the MPU, and provide a solid ground reference plane under the entire memory interface. Follow the SAMA5D2 layout guidelines and the SAMA5D2 Xplained Ultra reference design for validated stackup and routing.
A frequent mistake is to omit the backup-domain decoupling and the 32.768 kHz crystal load capacitors, which prevents reliable wake from 5 uA backup mode. Another is to assume pin compatibility with other SAMA5D2 family members such as the ATSAMA5D28B-CN; although they share the family name, they are not pin-compatible and require a board redesign. Always confirm the exact ordering code suffix (-CUR vs -CU) because it changes only the packaging, not the silicon, but affects reflow and inventory handling.
Informations de conformité
RoHS compliance is stated in the verified distributor data. REACH, lead-free, halogen-free, and conflict-minerals status were not present in the provided data and are marked unknown rather than assumed.