Microchip Technology ATSAMA5D27C-D1G-CU

Overview

ATSAMA5D27C-D1G-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-D1G-CU datasheet, ATSAMA5D27C-D1G-CU pinout, ATSAMA5D27C-D1G-CU application, or ATSAMA5D27C-D1G-CU equivalent, key selection criteria include DDR2-SDRAM integration, 128 I/Os with peripheral multiplexing, LPDDR2/DDR2 memory controller support, TrustZone-enabled secure boot, and 32-bit DDR multiport controller with on-the-fly AES encryption.

Technical Context

The ATSAMA5D27C-D1G-CU implements a dual-bus DDR2-SDRAM controller supporting Winbond W971GG6SB25I (1 Gbit, SSTL_18, CL=3, BL=8) with write latency = read latency − 1. Its memory subsystem includes 32-Kbyte L1 instruction/data caches, 128-Kbyte configurable L2 cache, and a 128-Kbyte scrambled internal SRAM.

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 kHz RC, 32.768 kHz crystal). Power management supports Ultra-Low-Power mode, Low-Power Backup mode with SleepWalking™, and Extended Backup mode with DDR2-SDRAM self-refresh.

Key Specifications

Pinout & Package

ATSAMA5D27C-D1G-CU is housed in a 289-ball Thin Fine-Pitch Ball Grid Array (TFBGA289) package with 0.8 mm ball pitch and 14 mm × 14 mm body size. The package integrates DDR2-SDRAM and MPU die in a single substrate with dedicated power rails (VDDSDMMC, VDDIOP0/VDDIOP1) and high-speed signal integrity layout.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ATSAMA5D27C-D1G-CU, the D28 variant offers higher memory bandwidth and enhanced physical security monitoring, while the LD1G variant trades DDR2 compatibility for LPDDR2's superior active/idle power efficiency-both require PCB redesign due to non-pin-compatible memory interfaces.

Availability

ATSAMA5D27C-D1G-CU is available at Aetrix Electronics and suitable for industrial HMI, edge gateway, and secure IoT node applications requiring stable component supply, long lifecycle assurance, and traceable sourcing from authorized channels.

Supply support for ATSAMA5D27C-D1G-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 components, FPGAs, and security solutions, headquartered in Chandler, Arizona.

The SAMA5D2 SIP product line targets secure, low-power industrial and IoT edge applications, integrating Arm Cortex-A5 processing with hardened memory and cryptographic acceleration in a single package to simplify design and enhance system-level trust.

FAQ

What memory type and capacity is integrated into the ATSAMA5D27C-D1G-CU?

The ATSAMA5D27C-D1G-CU integrates 1 Gbit DDR2-SDRAM (Winbond W971GG6SB25I) in a monolithic SiP configuration. This matches the "D1G" suffix designation and is confirmed in Microchip's DS60001484D datasheet Table 4-1 and Section 6. The DDR2 operates at 1.8 V with CAS Latency 3 and supports up to 166 MHz system bus frequency.

Is the ATSAMA5D27C-D1G-CU pin-compatible with other SAMA5D2 SIP variants?

No, the ATSAMA5D27C-D1G-CU is not pin-compatible with other SAMA5D2 SIP variants. Microchip explicitly states in DS60001484D Section 6: "SAMA5D2 DDR2 SIP devices are not pin-to-pin compatible with SAMA5D2 devices." Its TFBGA289 ballout differs from TFBGA196 (SAMA5D225) and TFBGA361 (SAMA5D27C-LD1G/2G, SAMA5D28), requiring unique PCB layout.

Does the ATSAMA5D27C-D1G-CU support CAN FD, and what is its compliance status?

The ATSAMA5D27C-D1G-CU includes two MCAN controllers that implement the non-ISO CAN FD frame format. As stated in the datasheet Feature section: "MCAN implements the non-ISO CAN FD frame format and therefore does not pass the CAN FD Conformance Test according to ISO 16845-1:2016." It supports CAN FD data rates up to 5 Mbps but lacks ISO 16845 validation.

What security features are implemented in hardware on the ATSAMA5D27C-D1G-CU?

The ATSAMA5D27C-D1G-CU implements multiple hardware security features: Arm TrustZone, secure boot loader, on-the-fly AES-128/192/256 encryption for DDR2-SDRAM (AESB), SHA256-based Integrity Check Monitor (ICM), 5 Kbyte scrambled SRAM with tamper erasure, and six dedicated tamper detection pins. These are documented in DS60001484D Sections 1 and 5.

What is the maximum display resolution supported by the LCD controller in the ATSAMA5D27C-D1G-CU?

The LCD TFT controller in the ATSAMA5D27C-D1G-CU supports resolutions up to 1024×768 pixels with 24-bit RGB parallel interface. It includes four overlays, rotation, post-processing, and alpha blending capabilities. This capability is specified in the "Features" section of DS60001484D and confirmed in Table 4-1 under the "LCD" row for SAMA5D27.