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onsemi N34C04 4Kb Serial EEPROM

onsemi N34C04 4Kb Serial EEPROM is designed for DDR4 DIMM, which implements the JEDEC JC42.4 (EE1004-v) Serial Presence Detect (SPD) specification for DDR4 DIMMs. These support the Standard (100kHz), Fast (400kHz), and Fast-Plus (1MHz) I2C protocols. One of the two available 2Kb EEPROM banks (referred to as SPD pages in the EE1004-v specification) is activated for access at power-up. The banks can be switched via software command after power-up. Each of the four 1Kb EEPROM blocks can be written and protected by software commands. The onsemi N34C04MU3ETG will respond with NoACK following the dummy Data Byte, while the N34C04MU3EKTG will respond with ACK by "SPD Page Select Command". The typical application for these devices is computing.

Features

  • JEDEC JC42.4 (EE1004-v) Serial Presence Detect (SPD) compliant
  • Temperature range of -40°C to +125°C
  • 1.7V to 3.6V supply range
  • I2C/SMBus interface
  • Schmitt triggers and noise suppression filters on SCL and SDA inputs
  • 16-byte page write buffer
  • Hardware write protection for entire memory
  • Low-power CMOS technology
  • 2mm x 3mm x 0.5mm UDFN-8 package
  • These devices are Pb-free and are RoHS-compliant

Pin Configuration/Pin Functions

Chart - onsemi N34C04 4Kb Serial EEPROM
Published: 2024-05-21 | Updated: 2024-06-10