Microchip Technology ATSAMA5D27C-D5M-CU

Overview

ATSAMA5D27C-D5M-CU from Microchip Technology is a System-in-Package (SiP) MPU integrating an Arm® Cortex®-A5 core (up to 500 MHz), TrustZone® security, NEON™ engine, and 1 Gbit DDR2-SDRAM in a single TFBGA289 package. It delivers high-performance Linux-capable processing with integrated memory, reduced PCB layer count, and EMI-optimized routing for industrial HMI and edge gateway applications.

For engineers reviewing the ATSAMA5D27C-D5M-CU datasheet, ATSAMA5D27C-D5M-CU pinout, ATSAMA5D27C-D5M-CU application, or ATSAMA5D27C-D5M-CU equivalent, key selection criteria include DDR2-SDRAM integration, 128 I/Os with multiplexed peripherals, LPDDR2/DDR2 memory controller support, secure boot capability, and 32-bit DDR multiport controller with on-the-fly AES encryption.

Technical Context

The ATSAMA5D27C-D5M-CU implements a dual-bus DDR2-SDRAM controller supporting Winbond W971GG6SB25I (1 Gbit, 1.8 V, CL=3, BL=8) with SSTL_18 interface and DLL-aligned DQS timing. Its memory subsystem includes 32-Kbyte L1 instruction/data caches, 128-Kbyte configurable L2 cache, and 128-Kbyte scrambled internal SRAM - all co-packaged with the MPU die to eliminate external trace routing.

It features two independent PLLs (600–1200 MHz system PLL, 480 MHz USB PLL), digital fractional audio PLL, and low-power oscillators (12 MHz RC, 32.768 kHz). Power management supports Ultra-Low-Power mode with fast wake-up, Low-Power Backup mode with 5-Kbyte SRAM, and Extended Backup mode with DDR2 in Self-Refresh - enabling battery-backed operation in remote sensing nodes.

Key Specifications

Pinout & Package

ATSAMA5D27C-D5M-CU uses a 289-ball TFBGA package (14 mm × 14 mm, 0.8 mm pitch) with power rails including VDDSDMMC, VDDIOP0, VDDIOP1, and DDRM_VDD/VDDL/VDDQ. Ballout is identical to other SAMA5D27 DDR2 variants (e.g., ATSAMA5D27C-D1G).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar MPU applications.

Compared with ATSAMA5D27C-D5M-CU, the D28C-D1G offers enhanced physical security at the cost of larger footprint and LPDDR2-only compatibility, while LD2G-CU provides double memory capacity but requires full PCB redesign due to non-pin-compatible TFBGA361 ballout.

Availability

ATSAMA5D27C-D5M-CU is available at Aetrix Electronics and suitable for industrial HMI terminals, edge gateways, medical imaging sensors, and automated retail kiosks requiring stable component supply, long-term lifecycle support, and qualified industrial temperature operation.

Supply support for ATSAMA5D27C-D5M-CU includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Microchip Technology Inc. is a leading provider of microcontrollers, analog, FPGA, and connectivity solutions, with a focus on reliability, security, and long-term product availability for industrial and automotive markets.

The SAMA5D2 SIP product line integrates Arm Cortex-A5 MPUs with DDR/LPDDR2 memory to simplify high-performance embedded Linux designs - targeting applications demanding security, low power, and reduced PCB complexity in space-constrained industrial systems.

FAQ

What is the memory configuration of the ATSAMA5D27C-D5M-CU?

The ATSAMA5D27C-D5M-CU integrates a 1 Gbit DDR2-SDRAM (Winbond W971GG6SB25I) co-packaged with the SAMA5D27 MPU die in a single TFBGA289 package. It does not include LPDDR2 memory. The DDR2 operates at 1.8 V with CAS Latency 3 and Burst Length 8, interfaced via a dedicated 16-bit multiport controller supporting on-the-fly AES encryption.

Is the ATSAMA5D27C-D5M-CU pin-compatible with other SAMA5D2 SIP variants?

No, the ATSAMA5D27C-D5M-CU is not pin-compatible with LPDDR2-based SAMA5D2 SIPs (e.g., ATSAMA5D27C-LD2G-CU) due to differing TFBGA packages (289-ball vs. 361-ball) and incompatible power domains (DDRM_VDD/VDDL/VDDQ vs. DDRM_VDD18/VDD12). DDR2 SIP devices share ballout within the TFBGA289 family but differ from TFBGA196 and TFBGA361 variants.

Does the ATSAMA5D27C-D5M-CU support secure boot and cryptographic acceleration?

Yes, the ATSAMA5D27C-D5M-CU includes a 64-Kbyte scrambled and maskable ROM embedding a secure bootloader, SHA256 Integrity Check Monitor (ICM), AES-256/192/128 hardware accelerator (AESB), and True Random Number Generator compliant with NIST SP 800-22. These features enable verified boot chain and runtime encryption of DDR2 contents without CPU overhead.

What operating temperature range is specified for the ATSAMA5D27C-D5M-CU?

The ATSAMA5D27C-D5M-CU is rated for industrial operation from -40°C to +85°C ambient temperature. It includes zero-power POR cells, main crystal clock failure detection, and thermal monitoring circuitry - ensuring reliable startup and runtime stability across harsh environmental conditions without external supervision.

Which peripherals are supported by the ATSAMA5D27C-D5M-CU for human-machine interface applications?

The ATSAMA5D27C-D5M-CU supports full HMI functionality via its LCD TFT controller (1024×768, 24-bit RGB), 64-channel Peripheral Touch Controller (PTC), 12-bit ADC with resistive touchscreen capability, and dual USB high-speed ports (host/device or dual host). These interfaces enable responsive graphical displays, multi-touch input, stylus interaction, and peripheral connectivity in industrial panel PCs and kiosks.