ATSAMA5D21C-CUR

ATSAMA5D21C-CUR is Microchip/ATMEL’s member of the ATSAMA5D family: a 32‑bit ARM Cortex‑A5 based MCU/MPU designed for embedded systems that may run RTOS or Linux given sufficient memory and I/O.
Key points
- Core: ARM Cortex‑A5 with a memory management unit (MMU) for Linux/RTOS; suitable for applications requiring a capable embedded CPU.
- Integration: On‑chip boot ROM/flash and an external memory interface (DDR2/LPDDR2) for expandable RAM; rich set of peripherals.
- Peripherals: USB 2.0 (OTG), Ethernet MAC, multiple serial interfaces (USART/SPI/I2C), I2S, PWM, timers, ADC, LCD controller, DMA, and a crypto engine with security features (secure boot, cryptography acceleration).
- Package/variant: CUR denotes a specific package/pinout variant of the device.
- Tooling: Supported by Microchip development tools and software frameworks (Atmel Start, Studio, ASF/SDK).
Typical uses: industrial control, networking/storage appliances, HMI, and other embedded systems needing a Cortex‑A5 MCU with rich peripherals. For exact specs (clock, memory, pinout), consult the datasheet.

There isn’t an exact one-to-one equivalent. ATSAMA5D21C-CUR is a CUR module in Microchip’s SAMA5D2 family (Cortex-A5). The closest equivalents are other CUR modules in the SAMA5D2 line with similar CPU and peripherals. For a precise cross-reference, use Microchip’s Product Selector/Cross-Reference tool to find the closest pin-compatible or feature-compatible alternative.

Here are the core features of ATSAMA5D21C-CUR (SAMA5D2 family):
- CPU: ARM Cortex-A5, 32-bit, ARMv7-A, up to ~533–536 MHz
- Memory: on-chip SRAM; external memory interfaces (SDRAM/NAND/NOR); flash options vary by part
- USB: USB OTG with host/device support
- Networking: Ethernet MAC (10/100 Mbps)
- Peripherals: CAN 2.0B, multiple UARTs/USARTs, SPI, I2C, PWM, timers
- Storage interfaces: SD/MMC/SDIO interfaces
- Analog: multi-channel 12-bit ADC (and related analog peripherals)
- Security: crypto engine (AES/DES/3DES, SHA-2) and hardware RNG
- Power: multiple low-power modes and power-management features
- Debug/Trace: JTAG/ETM with trace support
- Software/OS: support for Linux and RTOS environments; development tools (GCC, Microchip Studio)
Note: exact memory sizes, package options, and some peripherals may vary by specific CUR variant.

- Pin count: 208 pins (CUR package)
- Function: 32‑bit ARM Cortex‑A5 based SoC/microcontroller (SAMA5D2 family) with on‑chip memory and integrated peripherals (USB, Ethernet, UART/SPI/I2C, etc.) for embedded applications.

- Manufacturer: Microchip Technology Inc.
- What kind of company: A US-based multinational semiconductor company that designs, manufactures, and sells microcontrollers, microprocessors (including the SAM SAMA5D family), memory, and analog ICs, along with development tools and software.

Applications include:
- Industrial automation and control (HMI, PLCs, motor control)
- Embedded networking/gateway devices (Ethernet, USB, CAN)
- Smart metering, energy management and power equipment
- Point-of-sale terminals, kiosks and digital signage
- Medical devices requiring reliable processing
- Embedded HMI and consumer/enterprise appliances
- Building/home automation and smart devices
- Data acquisition and instrumentation systems

It uses a BGA package, specifically an LFBGA package with 208 balls (LFBGA208).