Data Sheet Rev.1.3 17.09.2012
Swissbit AG
Industriestrasse 4 Fon: +41 71 913 03 03 www.swissbit.com Page 2
CH – 9552 Bronschhofen Fax: +41 71 913 03 15 eMail: info@swissbit.com of 17
Switzerland
This Swissbit module is an industry standard 204-pin 8-byte DDR3 SDRAM Small Outline Dual-In-line Memory
Module (SO-DIMM) which is organized as x64 high speed CMOS memory arrays. The module uses internally
configured octal-bank DDR3 SDRAM devices. The module uses double data rate architecture to achieve high-
speed operation. DDR3 SDRAM modules operate from a differential clock (CK and CK#). READ and WRITE
accesses to a DDR3 SDRAM module is burst-oriented; accesses start at a selected location and continue for a
programmed number of locations in a programmed sequence. The burst length is either four or eight locations. An
auto precharge function can be enabled to provide a self-timed row precharge that is initiated at the end of a burst
access. The DDR3 SDRAM devices have a multibank architecture which allows a concurrent operation that is
providing a high effective bandwidth. A self refresh mode is provided and a power-saving “power-down” mode. All
inputs and all full drive-strength outputs are SSTL_15 compatible.
The DDR3 SDRAM module uses the serial presence detect (SPD) function implemented via serial EEPROM
using the standard I2C protocol. This nonvolatile storage device contains 256 bytes. The first 128 bytes are
utilized by the SO-DIMM manufacturer (Swissbit) to identify the module type, the module’s organization and
several timing parameters. The second 128 bytes are available to the end user.
Module Configuration
8 x 256M x 8bit (2048Mbit)
67.60 (long) x 30(high) x 3.80 [max] (thickness)
Timing Parameters
Clock Cycle/Data bit rate
SGN02G64D2BD1SA-BB[E/W]RT
SGN02G64D2BD1SA-CC[E/W]RT
SGN02G64D2BD1SA-DC[E/W]RT
Pin Name
Address Input / Autoprecharge Bit
Data Strobe, positive line
Data Strobe, negative line (only used when differential data strobe mode is enabled)
Clock Inputs, positive line
Clock Inputs, negative line
Temperature event: The EVENT# pin is asserted by the temperature sensor when critical
Figure 1: Mechanical Dimensions