ATSAMA5D28A-CU - ARM Cortex-A5 500MHz MPU, 289-LFBGA | Microchip
Référence : ATSAMA5D28A-CU ✓ Actif| Qté | Prix unitaire | Total |
|---|---|---|
| 1 | $22.5 | $22,50 |
| 10 | $20.78 | $207,80 |
| 100 | $18.45 | $1 845,00 |
| 500 | $16.4 | $8 200,00 |
| 1 000 | $14.85 | $14 850,00 |
ATSAMA5D28A-CU Présentation
A microprocessor (MPU) is the central processing unit of an embedded system — a fully integrated SoC-class device that runs an operating system (typically Linux) and orchestrates peripherals, memory, and external interfaces. Compared with microcontrollers (MCUs), MPUs expose DDR memory controllers and high-bandwidth peripherals, sitting at the top of the embedded-compute hierarchy: MPU → application processor → system-on-chip → semiconductor. The SAMA5D2 family targets industrial HMI, IoT gateways, and connected-device designs needing Linux-class software environments at low power.
Key features include support for DDR2/DDR3L/LPDDR2/LPDDR3 external memories with ECC, QSPI and e.MMC flash interfaces, and hardware cryptography with secure boot. Peripheral connectivity spans multiple I2C, SPI, USART/UART, CAN-FD, HSIC, USB 2.0 with PHY, 10/100 Ethernet, and a 12-bit ADC. An LCD controller with touch-screen support and a parallel CMOS sensor interface suit graphical and vision-based applications. The -CU suffix denotes a 289-LFBGA commercial-grade package.
From an architectural perspective, the Cortex-A5 implements the ARMv7-A architecture with NEON SIMD, achieving 1.39 DMIPS/MHz, while the Cryptography Accelerator offloads AES, SHA, and public-key operations. The Advanced Interrupt Controller (AIC) and 16-channel DMA engine reduce CPU overhead for high-throughput peripherals. An on-chip secure RTC, power-management controller, and multiple low-power modes (Idle, Ultra-Low-Power, Backup, and Shutdown) allow deep sleep at sub-microamp standby currents for battery-backed designs.
Typical applications include industrial HMI panels, building-automation controllers, IoT edge gateways, medical point-of-care devices, and Linux-based smart appliances. The combination of high CPU throughput, multimedia extensions, and integrated connectivity makes the part especially attractive for graphics-rich connected devices.
When designing with this MPU, ensure the PCB layout follows Microchip's DDR routing and decoupling guidelines in the application notes; an external switching regulator is typically required for the core 1.2V rail. Developers should also plan for boot media selection between QSPI flash and SD/e.MMC.
This page synthesizes distributor pricing, drop-in same-brand SAMA5D2 alternatives, and practical design notes not consolidated on a single datasheet reference page.
Alternatives de remplacement direct pour ATSAMA5D28A-CU — 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 ATSAMA5D28A-CU (même facteur de forme et même empreinte) — différant par Package, External Memory Support, Backup Mode Current, Ethernet, Operating Temperature.
Outil de comparaison rapide — sélectionnez des références alternatives pour une comparaison côte à côte :
ATSAMA5D28A-CN
✅ Remplacement direct✓ En stock
$11.4 / unité
Voir la fiche technique →ATSAMA5D28A-CNR
✅ Remplacement direct✓ En stock
$15.4 / unité
Voir la fiche technique →ATSAMA5D27C-CUR
✅ Remplacement direct✓ En stock
$12.9 / unité
Voir la fiche technique →ATSAMA5D27B-CU
✅ Remplacement direct✓ En stock
$11.85 / unité
Voir la fiche technique →ATSAMA5D27A-CU
✅ Remplacement direct ⚠️ Spécifications non vérifiées✓ En stock
$7.83 / unité
Voir la fiche technique →ATSAMA5D27A-CNR
✅ Remplacement direct✓ En stock
$10.95 / unité
Voir la fiche technique →ATSAMA5D26C-CU
✅ Remplacement direct✓ En stock
$11.8 / unité
Voir la fiche technique →ATSAMA5D22C-CU
✅ Remplacement direct ⚠️ Spécifications non vérifiées✓ En stock
$7.14 / unité
Voir la fiche technique →ATSAMA5D28A-CU Valeurs maximales et caractéristiques électriques
| Core Architecture | ARM Cortex-A5 (32-bit) |
| Maximum CPU Clock | 500 MHz |
| Number of Cores | 1 |
| SIMD Engine | ARM NEON |
| Floating-Point Unit | Yes (VFPv4) |
| Instruction Set | ARMv7-A |
| On-chip ROM | 160 KB (secure boot) |
| External Memory Support | DDR2 / DDR3L / LPDDR2 / LPDDR3 (16-bit, with ECC) |
| Flash Interface | QSPI, e.MMC, SD |
| Boîtier | 289-LFBGA (14x14 mm) |
| Type de montage | Surface Mount |
| Température de fonctionnement | -40C to +85C (industrial grade per -CU suffix) |
| Supply Voltage (Core) | 1.2 V |
| LCD Controller | Yes (with touch-screen support) |
| Cryptography | AES, SHA, secure boot (TRNG + AES-OTF) |
| Ethernet | 10/100 Mbps MAC with PHY interface |
| USB | USB 2.0 Host + Device with on-chip PHY |
| CAN | CAN-FD |
| ADC | 12-bit, multi-channel |
| Statut RoHS | Compliant |
Guide de configuration des broches du ATSAMA5D28A-CU 289-lfbga (14x14 mm)
Configuration des broches du ATSAMA5D28A-CU (boîtier 289-lfbga (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 ATSAMA5D28A-CU.
Consultez la fiche technique pour la configuration complète des broches.
Applications typiques
ATSAMA5D28A-CU convient pour 7 applications: Industrial HMI and Operator Panels, IoT Edge Gateways and Connected Appliances, Building-Automation Controllers, Medical Point-of-Care Devices, Smart Appliance Control Boards, Connected-Print and Office Imaging, Connected-Display and Digital Signage.
Industrial HMI and Operator Panels
The ATSAMA5D28A-CU is purpose-built for industrial human-machine interface (HMI) panels, where the 500 MHz Cortex-A5 core drives Linux-based Qt/GTK touchscreens while the on-chip LCD controller supports XGA-class TFTs with hardware touch sensing. Its 1.39 DMIPS/MHz sustained throughput and NEON-accelerated 2D blit enable fluid UI rendering, while dual QSPI + 16-bit DDR3L with ECC delivers responsive boot and reliable memory under factory-floor vibration. Industrial CAN-FD connectivity directly interfaces with PLCs and motor drives without an external bridge, and the -40C to +85C operating range handles cabinet temperatures. Compared to a discrete MPU + external LCD bridge design, integrating the controller saves roughly 8-12 USD in BOM while cutting board area by ~20%, making the ATSAMA5D28A-CU a natural choice for compact fanless HMI designs.
Recommandé
IoT Edge Gateways and Connected Appliances
The ATSAMA5D28A-CU serves as the Linux host processor in edge gateways aggregating sensor data from BLE/Zigbee sub-radios, Modbus industrial buses, and Wi-Fi uplinks. Its hardware cryptography (AES, SHA, True RNG) secures TLS 1.3 sessions at the edge without off-loading to a separate secure element, reducing BOM and latency. The 10/100 Ethernet MAC with PHY interface and two USB 2.0 ports provide simultaneous uplink and local-storage paths, while LPDDR3 support keeps active power low for thermally-constrained enclosures. Deep-sleep with sub-microamp RTC retention enables battery-backed wake-on-LAN-style operation between maintenance windows, making the ATSAMA5D28A-CU ideal for telemetry gateways requiring Linux-class protocol stacks without an MPU-class power budget.
Recommandé
Building-Automation Controllers
In KNX, BACnet, or Modbus building-automation hubs, the ATSAMA5D28A-CU integrates the master controller, graphical user interface, and multi-protocol bridge in a single SoC. Multiple I2C/SPI/USART instances permit direct connection to HVAC sensor matrices, lighting controllers, and access-management peripherals without an external bus expander. CAN-FD links to elevator and fire-alarm systems, while Ethernet carries IP-based BMS backhaul. The 12-bit ADC handles analog sensor reads for legacy equipment, reducing the need for a separate signal-conditioning ASIC. Compared with a microcontroller-only architecture, running a real-time Linux stack on the ATSAMA5D28A-CU simplifies OTA updates and lets developers reuse mainstream networking libraries.
Recommandé
Medical Point-of-Care Devices
The ATSAMA5D28A-CU powers portable diagnostic instruments such as blood-analyzers, ultrasound carts, and connected glucose monitors where a 500 MHz Cortex-A5 host runs embedded Linux with medical-grade UI frameworks. Its hardware AES-OTF engine accelerates encrypted sensor data pipelines for HIPAA-compliant cloud sync, while the LCD controller drives multi-touch capacitive displays with hardware gestures. The 16-bit DDR3L interface with ECC ensures memory reliability for clinical record keeping, and the commercial -40C to +85C range handles hospital-room thermal envelopes. Compared with external-display-controller-based designs, integrating the LCD pipeline saves roughly 15% board area, enabling the slim chassis required for handheld point-of-care designs.
Recommandé
Smart Appliance Control Boards
The ATSAMA5D28A-CU is widely adopted in connected refrigerators, induction cooktops, and washing-machine mainboards where its Cortex-A5 core runs Linux/Android-Thing-style UI stacks on capacitive touchscreens and bridges to motor-control BLDC drivers via CAN-FD. The parallel CMOS sensor interface accommodates barcode or machine-vision modules for product identification in connected kitchens, while I2S interfaces drive audio confirmation cues. DDR3L at 16-bit and ECC extend memory reliability over the appliance's 10+ year service life, and the secure-boot chain prevents unauthorized firmware from being flashed during service. Compared with a microcontroller + external NPU architecture, the integrated Cortex-A5 + NEON design cuts system cost by roughly 25% at moderate AI feature load.
Recommandé
Connected-Print and Office Imaging
In networked printers, MFPs, and label-printers, the ATSAMA5D28A-CU runs embedded Linux image-rendering pipelines while exposing 10/100 Ethernet, USB host and device, and SD/QSPI flash for firmware upgrade. Its NEON SIMD accelerates JPEG/PNG decoding for thumbnail rendering on preview LCDs, while CAN-FD interfaces with paper-handling subsystems and stapler modules. Hardware AES secures print-job authentication and TLS for fleet-management protocols, and the LCD controller drives operator panels. Compared with a discrete MPU + FPGA image pipeline, the integrated ATSAMA5D28A-CU design simplifies board layout and reduces component count by roughly 30%, easing the FCC/CE certification path for connected office equipment.
Recommandé
Connected-Display and Digital Signage
The ATSAMA5D28A-CU drives commercial digital-signage displays and interactive kiosks where a 500 MHz Cortex-A5 host streams 1080p content from e.MMC over dual-band Wi-Fi modules, while the on-chip LCD controller drives the panel and the touch-screen interface handles multi-touch input. The AES engine secures digital-rights-management keys at the edge, while CAN-FD interfaces with elevator or vending subsystems. Compared with a TV-class display SoC, the ATSAMA5D28A-CU provides industrial-grade longevity (10+ year supply) and Linux customization, making it ideal for retail/kiosk integrators needing field-updatable signage platforms.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour ATSAMA5D28A-CU — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | ATSAMA5D28A-CN | ATSAMA5D28A-CNR | ATSAMA5D27C-CU | ATSAMA5D27B-CU | ATSAMA5D26C-CU |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology - same | Microchip Technology - same | Microchip Technology - same | Microchip Technology - same | Microchip Technology - same |
| Package | 289-LFBGA (14x14) | 289-LFBGA (14x14) - same | 289-LFBGA (14x14) - same | 289-LFBGA (14x14) - same | 289-LFBGA (14x14) - same | 289-LFBGA (14x14) - same |
| Core | ARM Cortex-A5 500 MHz | Cortex-A5 500 MHz | Cortex-A5 500 MHz | Cortex-A5 500 MHz | Cortex-A5 500 MHz | Cortex-A5 500 MHz |
| On-chip ROM | 160 KB | 160 KB | 160 KB | 160 KB | 160 KB | 160 KB |
| DDR Memory Support | DDR2 / DDR3L / LPDDR2 / LPDDR3 (16-bit + ECC) | Same DDR support | Same DDR support | Same DDR support | Same DDR support | |
| USB Interfaces | USB 2.0 Host + Device + HSIC | Same | Reduced (Host only, no HSIC) | Reduced | Reduced | |
| CAN-FD | Yes | Yes | Yes | No | No | |
| LCD Controller | Yes (touch-screen support) | Yes | Yes | Yes | Yes | |
| Operating Temperature | -40C to +85C (commercial grade) | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | |
| Core Voltage | 1.2 V | 1.2 V | 1.2 V | 1.2 V | 1.2 V |
Principaux différenciateurs
- Highest peripheral integration in SAMA5D2 family (vs ATSAMA5D27C-CU)
- Identical silicon, alternate packaging variants (vs ATSAMA5D28A-CN / ATSAMA5D28A-CNR)
- Rich peripheral set vs SAMA5D2 lower-tier (vs ATSAMA5D26C-CU)
Notes de conception
Estimated: at 500 MHz CPU load with typical 1.2 V core supply and ~0.4 A core current plus peripheral blocks, the ATSAMA5D28A-CU core power dissipation is approximately 0.48 W. Combined with the I/O and DDR3L I/O power (~0.3-0.5 W) and graphics block, total board power is in the 1.0-1.5 W range. Use a low-quiescent LDO for the always-on rail and a switching regulator for the core to maximize battery endurance in portable designs.
Follow Microchip's SAMA5D2 PCB design guide for DDR routing: keep the 16-bit DDR3L traces impedance-controlled to 50 ohm single-ended / 100 ohm differential within a ±0.5 mm length-match tolerance. Place the 289-LFBGA land pattern with micro-via-in-pad recommended for the BGA break-out, and dedicate an uninterrupted ground plane on layer 2 to suppress simultaneous-switching noise from the 500 MHz core transitions.
Do not operate ATSAMA5D28A-CU outside the -40C to +85C range without verifying against the industrial -CN suffix variant; the -CU suffix is commercial-grade. Ensure QSPI boot mode selection resistors are properly strapped because mismatched boot mode prevents the ROM bootloader from locating the application. Lastly, DDR3L training must complete before the secure-boot chain hands off to Linux or the kernel will hang during console initialization.
Estimated: the 289-LFBGA at 14x14 mm package has a typical theta-JA of approximately 18 C/W with 4-layer JEDEC PCB. At 1.5 W total dissipation, the junction rises ~27 C above ambient; inside an enclosed HMI enclosure this rise can exceed 60 C. Provide copper thermal pad stitching on inner layers and ensure airflow paths are not blocked by display standoffs.
Informations de conformité
Per Microchip SAMA5D2 product page the part is RoHS and REACH compliant, lead-free, halogen-free. AEC-Q100 qualification is not applicable for the -CU commercial grade (non-automotive) variant; industrial/extended variants are designated by other suffixes.