Microchip Technology Inc
 
Menu
 
The Arm® Cortex®-A5-based SAMA5D2 SiP integrates DDR2 memory in a single package, simplifying designs by removing high-speed memory interface constraints from a Printed Circuit Board (PCB). The impedance matching is done in the package as opposed to manually during development, so the system will function properly at normal and low-speed operation. Due to its higher level of system integration, it is particularly well-suited for space-constrained applications. As with any of Microchip’s products, the SAMA5D2 SiPs are backed by Microchip’s customer-driven obsolescence policy, which removes DDR2 supply risk by ensuring availability to customers for as long as needed.
ATSAMA5D225C-D1M
ATSAMA5D27C-D5M
Content block Edit More ATSAMA5D27C-D1G
ATSAMA5D28C-D1G

ATSAMA5D225C-D1M

128Mbit DDR2
Bare Metal and RTOS

ATSAMA5D27C-D5M

512Mbit DDR2
Linux

ATSAMA5D27C-D1G

1Gbit DDR2
Linux

ATSAMA5D28C-D1G

1Gbit DDR2
Linux
PCI Pre-certified

Why DDR2 and not DDR3?

DDR2 keeps power management simpler than DDR3(L), which adds a 1.5V or 1.35V power supply requirement to a system. Additionally, DDR2 is lower power than DDR3 at the SAMA5D2 maximum operating frequency, without compromising performance. Microchip manages the DDR supply chain for you, removing concerns of the ups and downs of the DDR market.

Which Memory density to choose?

Three DDR2 memory sizes (128 Mb, 512 Mb and 1 Gb) are available for the SAMA5D2 SIP and optimized for bare metal, Real-time Operating System (RTOS) and Linux implementations. For SAMA5D2 Linux-based applications the memory density sweet spot is 512Mb. The 1Gb option offers headroom for future upgrades and initial software development prior to code optimization. For RTOS or Bare Metal applications, 128Mb is generally more than sufficient.