M34E02-FMC6TGM 2 Kbit serial presence detect (SPD) EEPROM for double data rate DRAM modules DFN spot stock

Product Descriptions

The M34E02 and M34E02-F are 2 Kbit serial EEPROM memories able to lock permanently  the data in its first half (from location 00h to 7Fh). This facility has been designed specifically  for use in DRAM DIMMs (dual interline memory modules) with serial presence detect (SPD).  All the information concerning the DDR1 or DDR2 configuration of the DRAM module (such  as its access speed, size and organization) can be kept write-protected in the first half of the  memory.

The first half of the memory area can be write-protected using two different software write  protection mechanisms. By sending the device a specific sequence, the first 128 bytes of  the memory become write protected: permanently or resettable. In addition, the devices  allow the entire memory area to be write protected, using the WC input (for example by  tieing this input to VCC).

These I2C-compatible electrically erasable programmable memory (EEPROM) devices are  organized as 256 × 8 bits.

Product Features

■ 2 Kbit EEPROM for DDR1 and DDR2 serial presence detect

■ Backward compatible with the M34C02

■ Permanent and reversible software data protection for lower 128 bytes

■ 100 kHz and 400 kHz I2C bus serial interface

■ Single supply voltage:

– 1.7 V to 5.5 V

■ Byte and Page Write (up to 16 bytes)

■ Self-timed write cycle

■ Noise filtering

– Schmitt trigger on bus inputs

– Noise filter on bus inputs

■ Enhanced ESD/latch-up protection

■ More than 1 Million erase/write cycles

■ More than 40 years’ data retention

■ ECOPACK® (RoHS compliant) packages

■ Packages:

– ECOPACK2® (RoHS-compliant and Halogen-free)

Product Photos

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