mt18jsf25672pz-1g4f1 Micron Semiconductor Products, mt18jsf25672pz-1g4f1 Datasheet - Page 10

• Manufacturer Part Number: mt18jsf25672pz-1g4f1
• Description: Ddr3 Sdram Rdimm
• Manufacturer: Micron Semiconductor Products

Temperature Sensor with Serial Presence-Detect EEPROM
Thermal Sensor Operations
Serial Presence-Detect EEPROM Operation
PDF: 09005aef8394fb39
js-z-f18c256_512x72pz - Rev. C 10/09 EN
The temperature from the integrated thermal sensor is monitored and converts into a
digital word via the I
to create a custom temperature-sensing solution based on system requirements. Pro-
gramming and configuration details comply with JEDEC standard No. 21-C page 4.7-1,
“Definition of the TSE2002av, Serial Presence Detect with Temperature Sensor.”
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 JE-
DEC standard JC-45, “Appendix X: Serial Presence Detect (SPD) for DDR3 SDRAM
Modules.” These bytes identify module-specific timing parameters, configuration infor-
mation, and physical attributes. User-specific information can be written into the
remaining 128 bytes of storage. READ/WRITE operations between the system (master)
and the EEPROM (slave) device occur via an I
Vss, permanently disabling hardware write protect. For further information please refer
to Micron technical note TN-04-42, "Memory Module Serial Presence-Detect."
2GB, 4GB (x72, ECC, SR) 240-Pin DDR3 SDRAM RDIMM
2
C bus. System designers can use the user-programmable registers
10
Micron Technology, Inc. reserves the right to change products or specifications without notice.
2
C bus. Write protect (WP) is connected to
General Description
©2009 Micron Technology, Inc. All rights reserved.