ATSAMA5D21C-CUR

ATSAMA5D21C-CUR is Microchip/Atmel’s SAMA5D2 family ARM Cortex-A5-based microprocessor unit (MPU). It’s designed for embedded systems that require an OS (Linux/RTOS) and a rich peripheral set in a compact package.
Key points
- Core: ARM Cortex-A5, single core, operate at a few hundred MHz.
- Memory/Bus: on-chip ROM/Flash and RAM with external memory interfaces (SDRAM/NAND/NOR).
- Peripherals: USB 2.0 (host/device), Ethernet MAC, CAN, multiple UARTs, SPI, I2C, PWM/timers, ADC, and often an LCD controller.
- Connectivity and I/O: broad I/O options and memory interfaces for flexible system integration.
- Security: includes security features typical of SAMA5D2 devices (e.g., secure boot/cryptography options) as supported by the datasheet.
- Package: CUR suffix denotes a specific package/temperature variant; verify exact details in the datasheet.
- Software: supported by Microchip development tools (MPLAB X/Microchip Studio) and standard ARM toolchains; BSPs and middleware exist for Linux/RTOS.
For exact specs (clock, memory sizes, peripherals), consult the official datasheet and package description.

Key features of ATSAMA5D21C-CUR (concise)
- CPU: ARM Cortex-A5 core, high-performance 32-bit MCU core rated for hundreds of MHz.
- Memory: On-chip SRAM/ROM with external memory interfaces for flash, SRAM, and SDRAM/NAND/NOR.
- USB: USB 2.0 full/high speed with device/host/OTG support.
- Networking: 10/100 Mbps Ethernet MAC (IEEE 802.3) interface.
- Serial and peripherals: Multiple USART/UART, SPI, I2C, SSC (I2S), PWM, timers, RTC, watchdog.
- Storage interfaces: SD/MMC/SDIO support; external flash options.
- Graphics/LCD: LCD controller and parallel display interface for graphical apps.
- Security: Cryptography accelerator (AES/DES/3DES, SHA) with TrustZone/MPU support.
- DMA/DMAC: Direct memory access controller for peripherals.
- Debug/trace: JTAG/SWJ, ETM for debugging and performance tracing.
- Power: Multiple power domains with low-power modes and clock gating.
- Package/Grade: CUR-grade industrial temperature range (-40°C to 85°C).
- Software: Supported by Microchip/Atmel toolchains and ASF/MCSDK ecosystems.

It’s a BGA package variant, specifically a 256‑pin BGA (CUR suffix denotes the BGA package).

Pin count: 256 pins (CUR package, BGA).
Function: 32‑bit ARM Cortex‑A5 based microcontroller/MPU (SAMA5D2 family) with on‑chip flash, SRAM and peripherals for embedded applications.

- Manufacturer: Microchip Technology Inc. (the Atmel brand; ATSAMA5D21C-CUR is part of Microchip’s SAM family; Microchip acquired Atmel in 2016).
- What kind of company: A U.S.-based multinational semiconductor company that designs and manufactures microcontrollers, mixed-signal/analog ICs, flash memory, and related software/tools.

- Industrial automation and control systems (PLC-like, process control)
- HMI and graphic LCD display applications
- Embedded networking/gateway devices (Ethernet, CAN, USB)
- Motor, servo, and robotics control
- Building and home automation
- Medical devices and instrumentation
- Point-of-sale terminals and embedded kiosks
- Smart meters and energy management