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STMicro EEPROM meets SPD requirements

Posted: 01 Jun 2004 ?? ?Print Version ?Bookmark and Share

Keywords:stmicroelectronics? eeprom? serial presence detect? spd? ddr2?

STMicroelectronics has introduced a new application specific EEPROM designed to fulfill the Serial Presence Detect (SPD) function used in the next-generation of higher speed memory modules conforming to the JEDEC DDR2 specification.

The M34E02 has a 2Kb total capacity. It follows the company's existing M34C02 SPD, as well as the Permanent Software Protection for the lower 128 bytes. The upper half of the memory remains free for scratchpad use.

The SPD operates within a single supply voltage range of 1.7V to 3.6V, as required by DDR2, and is specified for the 0C to 70C temperature range. It provides both random and sequential READ modes, and allows BYTE WRITE and PAGE WRITE (up to 16 bytes).

Built using a high quality CMOS process, the M34E02 offers minimum data retention of 40 years and has a guaranteed read/write endurance of more than one million cycles.

The JEDEC DDR2 Standard defines minimum requirements for DIMMs from 256MBB to 4GBB of DRAM, and provides for faster, more reliable and more efficient performance, with a lower operating voltage, than the earlier DDR specification used in most PCs today. The use of Serial Presence Detect memories is mandatory for all new 168-pin and 200-pin DDR2 modules.

The M34E02 is available in an 8-lead UFDFPN8, with a body width of 2mm, a length of 3mm and a thickness of 0.6mm. It is also offered in a TSS0P8 package. Both versions use STMicro's ECOPACK Pb-free technology for RoHS-compliance.

The product is priced at 19 cents in quantities of 10,000-unit. More information is available at the company's website.

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