The SPD5 Hub family (SPD5118) device is a DDR5 Serial Presence Detect (SPD) EPPROM with Hub function (SPD5 Hub) and integrated Temperature Sensor (optional) as used for memory module applications. The Hub feature allows isolation of a local bus from a master host bus. The SPD5 Hub family device contains 1024 bytes of non-volatile memory (EEPROM) arranged as 16 blocks of 64 bytes per block. Each block may optionally be write protected via software command. 


  • Two wire programmable I²C or I3C bus serial interface
  • Single device load on the Host bus
  • Up to 12.5MHz transfer rate
  • 1.8V power supply input
  • 1.0V VLDO output at VIO pin; optionally can take 1.0V input power supply on VIO pin
  • Supports 1.0V, 1.1V and 1.2V Push-Pull IO levels
  • Supports 1.0V, 1.1V, 1.2V, 1.8V, 2.5V and 3.3V Open Drain IO levels
  • 16 blocks of non-volatile memory (NVM), 64 bytes per block
  • Hub function with 3 address bit translation
  • Integrated Temperature Sensor; 0.5°C accuracy with 0.25°C resolution
  • Packet Error Check (PEC) function
  • Parity Error Check function
  • Up to 8 unique addressing
  • Programmable I2C, I3C Bus Addressing Scheme
  • In Band Interrupt (IBI)
  • Write protection for each block of NVM
  • 9-pin thermally enhanced DFN package
  • Temperature: Industrial Range of -40°C to 125°C




Type Title Date
Datasheet - Short-form Log in to Download PDF 85 KB
Product Change Notice PDF 437 KB
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Design & Development