MT8JSF12864HY-1G4 Micron Semiconductor Products, MT8JSF12864HY-1G4 Datasheet - Page 8

• Manufacturer Part Number: MT8JSF12864HY-1G4
• Description: 1gb, 2gb X64, Sr 204-pin Ddr3 Sdram Sodimm
• Manufacturer: Micron Semiconductor Products

Serial Presence-Detect EEPROM Operation
PDF: 09005aef82b36df5/Source: 09005aef82b36dc2
JSF8C128_256x6HY.fm - Rev. B 3/08 EN
DDR3 SDRAM modules incorporate serial presence-detect. The SPD data is stored in a
256-byte EEPROM. The first 128 bytes are programmed by Micron to comply with JEDEC
specification JC-45 “Appendix X: Serial Presence Detect (SPD) for DDR3 SDRAM
Modules” (pending approval). These bytes identify module-specific timing parameters,
configuration information, and physical attributes. User-specific information can be
written into the remaining 128 bytes of storage. System READ/WRITE operations
between the master (system logic) and the slave EEPROM device occur via a standard
I
which provide four unique DIMM/EEPROM addresses. Write protect (WP) is connected
to V
2
C bus using the DIMM’s SCL (clock) and SDA (data) signals, together with SA[1:0],
SS
, permanently disabling hardware write protect.
1GB, 2GB (x64, SR) 204-Pin DDR3 SDRAM SODIMM
8
Micron Technology, Inc., reserves the right to change products or specifications without notice.
General Description
©2007 Micron Technology, Inc. All rights reserved