N34C04

N34C04 EEPROM Serial 4-Kb SPD for DDR4 DIMM Description The N34C04 is a EEPROM Serial 4−Kb, which implements the JEDEC JC42.4 (EE1004−v) Serial Presence Detect (SPD) specification for DDR4 DIMMs and supports the Standard (100 kHz), Fast (400 kHz) and Fast Plus (1 MHz) I2C protocols. One of the two available 2−Kb EEPROM banks (referred to as SPD pages in the EE1004−v specification) is activated for access at power−up. After power−up, banks can be switched via software command. Each of the four 1−Kb EEPROM blocks can be Write Protected by software command. Features JEDEC JC42.4 (EE1004−v) Serial Presence Detect (SPD) Compliant Temperature Range: −40°C to +125°C Supply Range: 1.7 V − 3.6 V 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 2 x 3 x 0.5 mm UDFN8 Package These Devices are Pb−Free and are RoHS Compliant VCC SCL A2, A1, A0 WP N34C04 SDA VSS Figure 1. Functional Symbol www.onsemi.com 1 UDFN8 MU3 SUFFIX CASE 517AZ PIN CONFIGURATION A0 1 A1 A2 (Top View) VSS VCC WP SCL SDA UDFN (HU4) For the location of Pin 1, please consult the corresponding package drawing. MARKING DIAGRAM XXX AZZ YM G UDFN8 XXX A ZZ Y M G = Specific Device Code = Assembly Location Code = Assembly Lot Number (Last Two Digits) = Production Year (Last Digit) = Production Month (1 − 9, O, N, D) = Pb−Free Package PIN FUNCTIONS Pin Nam...