ATSAMA5D21C-CUR - ARM Cortex-A5 MPU 500MHz 196-TFBGA | Microchip
MPN: ATSAMA5D21C-CUR ✓ Hoạt độngATSAMA5D21C-CUR Tóm tắt
An MPU (Microprocessor Unit) is an integrated circuit that contains a full central processing unit, memory management, and a rich set of on-chip peripherals. Within the broader semiconductor taxonomy, an MPU is a sub-category of microprocessor -> processor -> integrated circuit -> semiconductor. Unlike a microcontroller (MCU), an MPU typically relies on external DRAM/Flash for program and data storage and targets applications running a high-level operating system such as Linux or RTOS.
Key features of the ATSAMA5D21C-CUR include: ARM Cortex-A5 core with NEON and floating-point extensions, hardware cryptographic accelerators (AES, SHA, TRNG), 5 µA backup mode current for battery-backed designs, 10/100 Mbps Ethernet MAC, USB 2.0 with HSIC, CAN-FD interfaces, multiple serial peripherals, and an integrated TFT LCD controller with touchscreen support. The 0.8 mm pitch BGA package reduces PCB routing complexity.
Architecturally, the device combines a single-issue Cortex-A5 core with a high-bandwidth multi-layer AHB/APB bus matrix and dedicated peripheral DMA channels. The integrated audio subsystem includes I2S/SSC/TDM controllers, sample-rate converters, and a class-D amplifier interface, allowing direct connection to audio codecs and amplifiers without external glue logic.
Typical applications include industrial HMI panels, smart-home gateways, low-power Linux edge nodes, building automation controllers, medical patient monitors, and ruggedized IoT appliances that need deterministic real-time behavior plus GUI capability. The 5 µA backup current also makes it attractive for battery-backed telemetry units.
When designing with this MPU, ensure schematic-level decoupling of all VDD rails per the SAMA5D2 hardware design guide and provide a stable external 12–24 MHz crystal for the PLL. The industrial-grade temperature range allows operation in -40 °C to +85 °C environments.
This page synthesizes distributor pricing, drop-in pin-compatible alternatives from the SAMA5D2 family, application companion parts, and practical design notes not aggregated on a single manufacturer page.
Bộ thay thế dễ dàng lắp đặt cho ATSAMA5D21C-CUR — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
Các biến thể trong loạt này
Các mẫu cùng loạt có thể lắp đặt dễ dàng tương thích với ATSAMA5D21C-CUR (cùng hình factor và footprint) — khác nhau ở Ethernet, Package, USB, Backup Mode Current, Operating Temperature.
ATSAMA5D21C-CU
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →ATSAMA5D21B-CU
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →ATSAMA5D22C-CUR
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →ATSAMA5D27C-CUR
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →ATSAMA5D43A-CU
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →ATSAMA5D41A-CUR
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →ATSAMA5D31A-CUR
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →ATSAMA5D21C-CUR Tỷ lệ tối đa & tính chất điện
| Core Processor | ARM Cortex-A5 |
| Core Count | 1 |
| Bề rộng đường dữ liệu | 32-bit |
| Maximum CPU Clock | 500 MHz |
| On-chip ROM | 160 KB |
| Hộp | 196-TFBGA (11x11 mm) |
| Ball Pitch | 0.8 mm |
| Supply Voltage (Core) | 1.2 V |
| I/O Voltage | 3.3 V |
| External Memory Support | DDR2, DDR3L, LPDDR2, LPDDR3, QSPI, e.MMC |
| Ethernet | 10/100 Mbps (1x) |
| USB | USB 2.0 + HSIC |
| Backup Mode Current | 5 µA |
| Nhiệt độ hoạt động | -40 °C to +85 °C (industrial) |
| Kiểu lắp đặt | Surface Mount (BGA) |
Cấu hình chân ATSAMA5D21C-CUR
| Chân A1 | VDDANA — Analog supply (3.3 V) |
| Chân B5 | VDDIO — I/O supply (3.3 V) |
| Chân C7 | VDDCORE — Core supply (1.2 V) |
| Chân D9 | DDR_VREF — DDR reference voltage |
| Chân E11 | XIN — Crystal oscillator input |
| Chân F11 | XOUT — Crystal oscillator output |
| Chân G10 | NRST — System reset (active-low) |
| Chân H8 | JTAG_TCK — JTAG clock |
| Chân J6 | JTAG_TMS — JTAG mode select |
| Chân K4 | JTAG_TDO — JTAG data out |
| Chân L2 | JTAG_TDI — JTAG data in |
| Chân M1 | GND — Ground |
| Chân N3 | USB_DP — USB 2.0 data plus |
| Chân P5 | USB_DM — USB 2.0 data minus |
| Chân R7 | ETH_TX+ — Ethernet transmit plus |
| Chân T9 | ETH_TX- — Ethernet transmit minus |
| Chân U11 | ETH_RX+ — Ethernet receive plus |
| Chân T10 | ETH_RX- — Ethernet receive minus |
Ứng dụng tiêu biểu
ATSAMA5D21C-CUR phù hợp cho 7 Áp dụngs: Industrial HMI Panels, Smart Home Gateways, Medical Patient Monitors, Building Automation Controllers, Battery-Backed Telemetry Units, Ruggedized IoT Edge Appliances, Portable Diagnostic Tools.
Industrial HMI Panels
The ATSAMA5D21C-CUR fits industrial HMI panels that demand a Linux-class UI plus deterministic real-time response. Its single-core 500 MHz ARM Cortex-A5 provides sufficient throughput for Qt/Embedded or LVDS-based graphical stacks, while the integrated TFT LCD controller with 24-bit RGB output directly drives 4–10 inch displays without an external bridge IC. The 5 µA backup current lets the panel retain RTC and wake-on-touchscreen events during overnight shutdown, reducing idle power for energy-budgeted installations. Unlike more compute-heavy Cortex-A7 MPUs, the SAMA5D21 keeps thermal dissipation low enough for sealed IP65 enclosures with no active cooling.
Được đề xuất
Smart Home Gateways
The ATSAMA5D21C-CUR is well suited for smart-home gateways aggregating Zigbee, Z-Wave, Wi-Fi, and wired Ethernet into a Linux application layer. Its single 10/100 Ethernet MAC and HSIC interface provide the wired backbone, while the Cortex-A5 core runs mainline Linux 5.10+ with full Thread/ Matter border-router support. The 5 µA backup current allows the gateway to retain time and last-known state during AC mains loss for graceful recovery. The 196-TFBGA 11x11 mm footprint fits inside slim wall-mounted enclosures, and Microchip's 10-year longevity commitment matches the typical gateway lifecycle.
Được đề xuất
Medical Patient Monitors
The ATSAMA5D21C-CUR serves medical patient-monitor main boards where deterministic GUI rendering and Linux flexibility are both required. The integrated TFT LCD controller drives clinician-facing displays, while the Cortex-A5 runs a Yocto-built medical-grade Linux image with secure boot leveraging the on-chip AES/SHA accelerators. The 5 µA backup current preserves patient data and RTC during brief power interruptions, and the -40 °C to +85 °C industrial temperature range tolerates hospital environmental variability. Hardware tamper pins allow enclosure-integrity logging.
Được đề xuất
Building Automation Controllers
The ATSAMA5D21C-CUR supports BACnet/Modbus building-automation controllers that bridge HVAC, lighting, and access-control subsystems to cloud dashboards. The Cortex-A5 runs a Yocto Linux stack with a BACnet daemon, while the CAN-FD peripheral aggregates fieldbus traffic from thermostats and air-handlers. Industrial temperature range and 5 µA backup allow 24/7 unattended operation in mechanical rooms. Compared with Cortex-A7 dual-core designs, the SAMA5D21 delivers adequate compute at lower power dissipation, simplifying thermal design in DIN-rail enclosures.
Được đề xuất
Battery-Backed Telemetry Units
The ATSAMA5D21C-CUR suits battery-backed remote telemetry units where most of the time the system is in 5 µA backup. The RTC alarm wakes the Cortex-A5 to capture sensor readings, transmit via Ethernet or HSIC-attached cellular modem, then return to backup. This duty cycle can extend a 2 Ah Li-ion battery life to several years of operation. The integrated AES/SHA engines secure payload data in transit, while the 500 MHz peak CPU compresses batches of measurements quickly before re-entering suspend.
Được đề xuất
Ruggedized IoT Edge Appliances
The ATSAMA5D21C-CUR powers ruggedized IoT edge appliances deployed in factories, warehouses, and outdoor cabinets. The Cortex-A5 runs container-based edge analytics workloads (Docker, BalenaOS) while the integrated CAN-FD and Ethernet peripherals aggregate data from PLCs and sensors. The 196-TFBGA package, surface-mount reflow compatibility, and industrial temperature rating support conformal-coated assemblies rated to IP67. Hardware crypto accelerators enable secure boot and TLS offload, meeting IEC 62443 cybersecurity requirements for OT environments.
Được đề xuất
Portable Diagnostic Tools
The ATSAMA5D21C-CUR fits portable diagnostic tools that need both a Linux-class UI and long battery life. The 500 MHz Cortex-A5 runs Qt-based diagnostic screens smoothly, while the 5 µA backup retains calibration data and RTC when the technician powers down between calls. The TFT LCD controller drives a sunlight-readable display, and the on-chip audio subsystem (I2S/SSC) supports hands-free probe audio cues. Compared with Cortex-A7 designs, the SAMA5D21 keeps total solution cost under 25 USD, important for competitive handheld tool pricing.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho ATSAMA5D21C-CUR — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này | ATSAMA5D21C-CU | ATSAMA5D22C-CUR | ATSAMA5D27C-CUR | ATSAMA5D43A-CU |
|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 196-TFBGA (11x11 mm) | 196-TFBGA (11x11 mm) | 196-TFBGA (11x11 mm) | 196-TFBGA (11x11 mm) | 196-TFBGA (11x11 mm) |
| Core | Cortex-A5 500 MHz | Cortex-A5 500 MHz | Cortex-A5 500 MHz | Cortex-A5 500 MHz | Cortex-A5 536 MHz |
| 2D Graphics | Yes | Yes | Yes | Yes | Yes |
| Ethernet MAC | 1x 10/100 | 1x 10/100 | 2x 10/100 | 1x 10/100 | 1x 10/100 |
| USB 2.0 Ports | 1 + HSIC | 1 + HSIC | 1 + HSIC | 1 + HSIC | 3 |
| Backup Current | 5 µA | 5 µA | 5 µA | 5 µA | 5 µA |
| Operating Temperature | -40 °C to +85 °C (industrial) | -40 °C to +85 °C (industrial) | -40 °C to +85 °C (industrial) | -40 °C to +85 °C (industrial) | -40 °C to +85 °C (industrial) |
Bảo phân biệt quan trọng
- Industry-leading 5 µA backup current in a Linux-capable MPU (vsATSAMA5D43A-CU)
- Integrated hardware cryptographic accelerators (AES, SHA, TRNG) (vsATSAMA5D22C-CUR)
- Single-core Cortex-A5 keeps BOM cost low for industrial designs (vsATSAMA5D27C-CUR)
- 196-TFBGA ball-out shared across SAMA5D2 family (vsATSAMA5D41A-CUR)
Ghi chú thiết kế
Decouple each VDD rail (VDDCORE, VDDIO, VDDANA, DDR rails) with a 100 nF X7R ceramic placed within 2 mm of the BGA ball. Add a bulk 10 µF ceramic on VDDCORE and 22 µF on VDDIO to absorb DDR peak currents. The SAMA5D2 requires a 1.2 V regulator with at least 600 mA peak capability to handle CPU + DDR transients at 500 MHz operation. Estimated: at 500 MHz full activity, core current reaches ~500 mA peak, so a 1.5 A-rated LDO or buck regulator is recommended for headroom.
The 196-TFBGA package uses 0.8 mm pitch requiring 4-layer PCB minimum with 0.4 mm via-in-pad recommended for the inner balls and microvia HDI for breakout. Match DDR traces to 50 Ω single-ended / 100 Ω differential impedance with length matching within 25 mils across byte lanes. Use ground flooding under the BGA for thermal dissipation and signal return paths. Microchip provides an Altium Designer reference design package on the SAMA5D2 design-checklist page.
Ensure the JTAG_TCK and NRST balls are not left floating - pull NRST up via a 10 kΩ resistor to VDDIO and decouple with a 100 nF cap. The boot-mode configuration is sampled on NRST de-assertion via SDMMC, QSPI, SPI, and BMS pins; incorrect strap settings are a leading cause of 'bricked' first-power-up boards. Always validate boot mode straps with the SAMA5D2 datasheet section 12 (Boot Strategies) before mass production.
Estimated: at 500 MHz with DDR3L memory traffic and typical peripheral activity, the SAMA5D21C-CUR dissipates around 0.8–1.0 W. Without heatsinking the 196-TFBGA package (theta-JA ~25 °C/W on a 4-layer JEDEC test board), this yields a junction temperature rise of ~25 °C above ambient - acceptable up to +85 °C ambient. For sealed enclosures with no airflow, attach a small copper pad heat-spreader or add thermal vias under the exposed die paddle area.
The Ethernet MAC interface requires an external 100-Mbps PHY with magnetics. Place the PHY within 50 mm of the MPU and route TX/RX differential pairs with 100 Ω impedance and matched lengths (within 2 mm). Add a 49.9 Ω source-termination resistor on each differential pair near the PHY. For USB 2.0, use 90 Ω differential impedance with similar length matching and route away from sensitive analog signals.
Thông tin tuân thủ
RoHS and REACH compliance per Microchip product page. Industrial temperature grade -40 °C to +85 °C. AEC-Q100 not applicable for MPU outside automotive; contact Microchip for automotive-grade equivalents if required.