ATSAMA5D28B-CU - ARM Cortex-A5 MPU, 500MHz, 289-LFBGA | Microchip
Артикул: ATSAMA5D28B-CU ✓ Активен| Кол-во | Цена за ед. | Итого |
|---|---|---|
| 1 | $24.5 | $24,50 |
| 10 | $22.05 | $220,50 |
| 100 | $19.6 | $1.960,00 |
| 500 | $17.5 | $8.750,00 |
| 1.000 | $15.8 | $15.800,00 |
ATSAMA5D28B-CU Обзор
An ARM Cortex-A5 MPU is a microprocessor unit based on the ARMv7-A architecture that executes application-class operating systems such as Linux while consuming significantly less power than application processors. MPUs integrate the CPU core, memory controller, and peripheral IP into a single die, simplifying board design for embedded products. The Cortex-A5 belongs to the ARM Cortex-A series of application processors and supersedes older ARM9/ARM11 cores in performance-per-watt and feature set, including Neon media processing, TrustZone security, and an 8-Kbyte ETM/ETB trace macrocell.
Key features include a 32-Kbyte L1 instruction cache, a 32-Kbyte L1 data cache, a memory management unit (MMU), Neon media processing engine, ARM TrustZone, and support for up to 500 MHz operation. Peripherals include dual Ethernet GMAC with IEEE 1588, USB Host and Device, CAN-FD, multiple I2C/SPI/UART, and a 12-bit ADC. Hardware-accelerated cryptography (AES, SHA, TRNG) and secure boot are also integrated.
The device is fabricated in a low-power CMOS process and includes multiple low-power modes such as ULP0, ULP1, and Backup mode with RTC, achieving system-level standby currents below 100 uA. The 289-LFBGA package supports a 14x14 mm footprint and integrates an exposed die paddle for thermal dissipation, allowing operation across the industrial -40C to +85C temperature range.
Typical applications include industrial IoT gateways, HMI panels, smart energy meters, building automation controllers, point-of-sale terminals, medical instrumentation, and connected edge devices running Linux. The flexible external memory interface and rich connectivity make it ideal for products that require display output, networking, and security features.
When designing with this device, ensure proper DDR memory PCB routing with impedance-matched traces and adequate decoupling. The boot mode configuration (NAND, SD, QSPI, e.MMC) is selected via BMS pins and must be set before reset. Reference the SAMA5D2 Xplained board schematics for a validated Linux bring-up reference design.
This page synthesizes distributor pricing, drop-in same-brand and cross-brand alternatives, and practical design notes not consolidated on the manufacturer product page.
Аналоги без доработки для ATSAMA5D28B-CU — тот же корпус, pin-to-pin совместимость. Компоненты в других корпусах, требующие переработки PCB, исключены.
Варианты в этой серии
Модели той же серии, совместимые без доработки с ATSAMA5D28B-CU (тот же форм-фактор и посадочное место) — отличается по Package, Mounting Type, Ethernet, Operating Temperature, Backup Mode Current.
Инструмент быстрого сравнения — выберите альтернативные компоненты для сравнения бок о бок:
ATSAMA5D28B-CNR
✅ Прямая замена✓ В наличии
$17.9 / шт.
Открыть даташит →ATSAMA5D28B-CN
✅ Прямая замена✓ В наличии
$17.95 / шт.
Открыть даташит →ATSAMA5D28A-CUR
✅ Прямая замена✓ В наличии
$10.8 / шт.
Открыть даташит →ATSAMA5D27B-CU
✅ Прямая замена✓ В наличии
$11.85 / шт.
Открыть даташит →ATSAMA5D26C-CU
✅ Прямая замена✓ В наличии
$11.8 / шт.
Открыть даташит →ATSAMA5D28B-CUR
✅ Прямая замена✓ В наличии
$12.6 / шт.
Открыть даташит →ATSAMA5D28A-CUR
✅ Прямая замена✓ В наличии
$10.8 / шт.
Открыть даташит →ATSAMA5D28B-CU Максимальные параметры и электрические характеристики
| Core Architecture | ARM Cortex-A5 (ARMv7-A) |
| Core Count | 1 |
| Maximum CPU Frequency | 500 MHz |
| Разрядность шины данных | 32-bit |
| L1 Instruction Cache | 32 Kbytes |
| L1 Data Cache | 32 Kbytes |
| L2 Cache / SRAM | 128 Kbytes (configurable) |
| External Memory Support | DDR2, DDR3L, LPDDR2, LPDDR3, QSPI, e.MMC, NAND |
| Корпус | 289-LFBGA (14x14 mm) |
| Рабочая температура | -40C to +85C |
| Ethernet | Dual 10/100/1000 GMAC with IEEE 1588 |
| USB | USB Host + Device |
| CAN | CAN-FD |
| Hardware Crypto | AES, SHA, TRNG, secure boot |
| Статус RoHS | Compliant |
| Тип монтажа | Surface Mount |
Руководство по цоколевке ATSAMA5D28B-CU в корпусе 289-lfbga (14x14 mm)
Цоколевка для ATSAMA5D28B-CU (корпус 289-lfbga (14x14 mm)). Эта цифровая ИС включает выводы GPIO, интерфейсы связи (UART, SPI, I2C) и выводы питания. Обратитесь к техническому описанию производителя для альтернативных функций выводов и вариантов конфигурации. Необходимо для проектирования встраиваемых систем и трассировки печатных плат.
Нет подробных данных о распиновке для ATSAMA5D28B-CU.
Обратитесь к даташиту для полной конфигурации выводов.
Типичное применение
ATSAMA5D28B-CU подходит для 7 применениеs: Industrial IoT Gateway, Human-Machine Interface (HMI) Panels, Smart Energy Meter, Building Automation Controllers, Point-of-Sale Terminals, Connected Edge Devices with Linux, Medical Instrumentation Controllers.
Industrial IoT Gateway
The ATSAMA5D28B-CU is well suited for industrial IoT gateway designs because its ARM Cortex-A5 500 MHz core runs Linux with low latency, while the dual Gigabit Ethernet MACs with IEEE 1588 timestamping enable real-time industrial protocols. The hardware crypto engine (AES/SHA/TRNG) and secure boot allow tamper-resistant edge deployments. Place the MPU on a 4-layer PCB with impedance-controlled DDR3L traces and 4-layer stackup; ensure VDD_ANA and VDD_CORE are filtered with 10 uF + 100 nF ceramic decoupling. Reference the SAMA5D2 Xplained board schematics for a validated industrial gateway reference.
Рекомендуется
Human-Machine Interface (HMI) Panels
The ATSAMA5D28B-CU supports a single LCD controller up to WXGA resolution, making it ideal for industrial HMI panels with touchscreen UI. The ARM Cortex-A5 500 MHz core runs Qt or LVDS-based Linux GUIs smoothly, while the LPDDR3 controller delivers low-power graphics memory. Position the part on a 6-layer PCB with matched-length RGB/HDMI traces and keep the LCD data bus within 50 mm of the BGA. The integrated secure boot prevents unauthorized firmware loading in field-deployed HMIs.
Рекомендуется
Smart Energy Meter
The ATSAMA5D28B-CU fits smart energy meter designs because of its dual 12-bit ADC interfaces, hardware crypto for tamper detection, and ultra-low-power backup mode with RTC below 100 uA standby. The 500 MHz Cortex-A5 supports secure DLMS/COSEM protocols over Ethernet or wireless modems. Use LPDDR3 for lowest standby power; the SAMA5D2 ULP0 mode retains RTC and 8 Kbyte SRAM while consuming under 50 uA. Reference Microchip's smart meter reference design for validated DLMS implementation.
Рекомендуется
Building Automation Controllers
The ATSAMA5D28B-CU supports building automation protocols (BACnet, KNX, Modbus) over its dual Ethernet, CAN-FD, and UART peripherals. The Linux-capable ARM Cortex-A5 500 MHz core can run concurrent BACnet/IP stacks, while the secure boot ensures compliance with facility security policies. Mount the device on a 4-layer PCB with isolated RS-485 transceivers; the 289-LFBGA package requires 0.8 mm BGA pitch routing with microvia stackup.
Рекомендуется
Point-of-Sale Terminals
The ATSAMA5D28B-CU is well matched to point-of-sale terminal designs requiring PCI PTS compliance via its hardware AES/SHA crypto and secure boot. The ARM Cortex-A5 500 MHz core processes EMV transactions and contactless NFC over the integrated peripherals. Implement tamper-detection inputs and use LPDDR3 with ECC for transaction data integrity. The 289-LFBGA footprint supports a compact motherboard design with magstripe, EMV, and NFC antennas.
Рекомендуется
Connected Edge Devices with Linux
The ATSAMA5D28B-CU enables connected edge devices running Linux with its Cortex-A5 500 MHz performance, QSPI/e.MMC boot support, and integrated connectivity. Reference the SAMA5D2 Xplained board Linux BSP for a validated Yocto/OpenWrt build. Place a 4-Mbyte QSPI NOR for bootable firmware and route the e.MMC interface with matched-impedance traces. The secure boot verifies signed kernel images from e.MMC, defending against physical tampering.
Рекомендуется
Medical Instrumentation Controllers
The ATSAMA5D28B-CU serves medical instrumentation controllers with its hardware crypto, secure boot, and reliable Cortex-A5 500 MHz Linux platform. The ARMv7-A architecture with TrustZone supports trusted execution environments for PHI data isolation. Use LPDDR3 with ECC for patient data integrity. Implement IEC 60601 isolation with reinforced barriers on USB and Ethernet; reference Microchip medical-grade application notes for EMI/EMC compliance.
Рекомендуется
Сводка рекомендуемых товаров
Справочные инженерные данные для ATSAMA5D28B-CU — сравнение, рекомендации по проектированию и информация о соответствии.
Руководство по выбору
Сравнение с аналогами
| Параметр | Этот товар | ATSAMA5D28B-CNR | ATSAMA5D28B-CN | ATSAMA5D28A-CUR | ATSAMA5D27B-CU | ATSAMA5D26C-CU | ATSAMA5D28B-CUR | ATSAMA5D28A-CU |
|---|---|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 289-LFBGA (14x14) | 289-LFBGA (14x14) - same | 289-LFBGA (14x14) - same | 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 | ARM Cortex-A5 500 MHz | ARM Cortex-A5 500 MHz | ARM Cortex-A5 500 MHz (A-silicon) | ARM Cortex-A5 500 MHz | ARM Cortex-A5 500 MHz | ARM Cortex-A5 500 MHz | ARM Cortex-A5 500 MHz (A-silicon) |
| L2 Cache / SRAM | 128 Kbytes | 128 Kbytes | 128 Kbytes | 128 Kbytes | 128 Kbytes | 128 Kbytes | ||
| Hardware Crypto (AES/SHA/TRNG) | Yes | Yes | No | No | Yes | Yes | ||
| Gigabit Ethernet | Dual GMAC + IEEE 1588 | Dual GMAC + IEEE 1588 | Single GMAC + IEEE 1588 | Single GMAC | Dual GMAC + IEEE 1588 | Dual GMAC + IEEE 1588 | ||
| USB Host + Device | Yes | Yes | Yes | Yes | Yes | Yes | ||
| Operating Temperature | -40C to +85C (industrial) | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | ||
| Silicon Revision | B | A (legacy) | A (legacy) | B (different die variant) | C (different die variant) | B |
Ключевые отличия
- Hardware-accelerated cryptography integrated on-die (против ATSAMA5D27B-CU)
- Dual Gigabit Ethernet MACs with IEEE 1588 hardware timestamping (против ATSAMA5D26C-CU)
- Latest B-silicon revision with all errata fixed (против ATSAMA5D28A-CUR)
- 128 Kbytes configurable L2 cache/SRAM (против ATSAMA5D26C-CU)
Заметки по проектированию
The ATSAMA5D28B-CU uses a 289-LFBGA package with 0.8 mm ball pitch. Design the PCB with at least 4 layers and a microvia-in-pad stackup so the BGA pads can be properly fan-routed. Match DDR3L/LPDDR3 trace impedance to 50 ohms single-ended and 100 ohms differential (clock pair). Place 100 nF decoupling capacitors adjacent to every VDD pin group, and 10 uF bulk ceramics near the package periphery. Reference Microchip application note on BGA PCB design for validated stackup guidance.
The ATSAMA5D28B-CU requires separate supply rails for VDD_CORE (typically 1.2 V), VDD_ANA (3.3 V), and VDD_PLL. Estimated core current at 500 MHz under typical Linux load is approximately 200 mA. Use a buck regulator with at least 25% headroom to handle transient loads during cache flushes. The Backup mode with RTC consumes under 100 uA, but the ULP0 mode retains 8 Kbytes SRAM for wake-up handlers at under 50 uA typical.
Configure boot mode via BMS (Boot Mode Select) pins before reset to select between NAND, SD card, QSPI, and e.MMC boot sources. For production, enable secure boot by programming the OTP memory with a public key hash; this verifies signed firmware images from external memory before execution. Reference the SAMA5D2 Xplained board boot configuration for a validated sequence. Setting JTAG boundary scan requires pulling TEST pin high during reset.
The 289-LFBGA package has a typical theta_JA of approximately 15-20 C/W with a properly designed 4-layer PCB (per Microchip thermal characterization). Estimated junction temperature rise at 200 mA core current and 1.2 V VDD_CORE is approximately 5 C above ambient. Add thermal vias under the exposed die paddle to inner copper planes for better heat spreading, especially when the device runs at sustained 500 MHz with full peripheral activity.
Do not apply power to VDD_CORE before VDD_PLL or VDD_ANA - the sequence matters. DDR calibration must be re-run after any temperature change exceeding 20 C. The CAN-FD peripherals require an external transceiver; the on-chip CAN module is protocol-only. For Linux boot, ensure the SD card or QSPI Flash image includes a valid at91bootstrap binary, otherwise the ROM bootloader will halt. Reference the Microchip Linux4SAM BSP documentation for bring-up details.
Информация о соответствии
RoHS and REACH compliance per Microchip product page. Industrial temperature grade only - AEC-Q100 automotive qualification is not applicable to this part number. The SAMA5D2 family is in active production per the Microchip website.