This document is the specification of 512MB, 1GB, 2GB Registered DIMMs DDR2 SDRAM DDR2 Registered SDRAM MODULE 240pin Registered Module based on 512Mb C-die 72-bit ECC
The Samsung M393T series includes 512 MB, 1 GB and 2 GB DDR2 registered DIMM modules. All modules are 240‑pin, 72‑bit ECC devices built on 512 Mb C‑die technology. The document provides ordering information, electrical specifications, pin assignments and functional block diagrams for each capacity and organization.
Key features include JEDEC‑compliant 1.8 V ±0.1 V power supply, selectable speeds from DDR2‑400 to DDR2‑800, programmable CAS latency (CL3‑CL5), on‑die termination options, and partial array self‑refresh. Lead‑free versions are indicated by a “Z” in the part number and meet RoHS requirements.
| Capacities | 512 MB, 1 GB, 2 GB |
|---|---|
| Pin Count | 240‑pin |
| ECC | 72‑bit |
| Supply Voltage | 1.8 V ±0.1 V |
| Maximum Speed | DDR2‑800 (CL5) |
It designates a lead‑free product.
The modules operate at a JEDEC standard 1.8 V with a ±0.1 V tolerance.
Yes, all lead‑free products are RoHS compliant.
They provide 72‑bit error‑correcting code (ECC).