mt18lsdt3272dy-133 Micron Semiconductor Products, mt18lsdt3272dy-133 Datasheet - Page 7

• Manufacturer Part Number: mt18lsdt3272dy-133
• Description: 256mb, 512mb, 1gb X72, Ecc, Dr 168-pin Sdram Rdimm
• Manufacturer: Micron Semiconductor Products

Serial Presence-Detect Operation
PDF: 09005aef809b1694/Source: 09005aef809b166a
SD18C32_64_128x72D.fm - Rev. G 12/07 EN
SDRAM modules incorporate serial presence-detect. The SPD function is implemented
using a 2,048-bit EEPROM. This nonvolatile storage device contains 256 bytes. The first
128 bytes are programmed by Micron to identify the module type and various SDRAM
organizations and timing parameters. The remaining 128 bytes of storage are available
for use by the customer. System READ/WRITE operations between the master (system
logic) and the slave EEPROM device (DIMM) occur via a standard I
DIMM’s SCL (clock) and SDA (data) signals, together with SA (2:0), which provide eight
unique DIMM/EEPROM addresses. Write protect (WP) is tied to V
permanently disabling hardware write protect.
256MB, 512MB, 1GB (x72, ECC, DR) 168-Pin SDRAM RDIMM
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Micron Technology, Inc., reserves the right to change products or specifications without notice.
General Description
©2001 Micron Technology, Inc. All rights reserved
SS
2
C bus using the
on the module,