Features
- 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
Description
The SPD5118 hub 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 for the isolation of a local bus from a master host bus. This SPD5 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.
Parameters
| Attributes | Value |
|---|---|
| Product Type | SPD Hub |
| Function | SPD Hub for DDR5 Memory Modules |
| Application System | Server and Client |
| Input Voltage Range (V) | 3 - 3.6 |
Package Options
| Pkg. Type | Pkg. Dimensions (mm) | Lead Count (#) | Pitch (mm) |
|---|---|---|---|
| DFN | 2.0 x 3.0 x 0.75 | 8 | 0.5 |
Application Block Diagrams
 | DDR5 Gaming DIMM DDR5 DIMM implements the latest power and communication technology. |
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Support Communities
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How to enter I3C mode on SPD5118?
I initially send setaasa ccc in spd5118 and read register.I checked the ACK signal.But it does not enter I3C mode.Are there any other conditions for the product to enter I3C mode?
Jan 30, 2026 -
SPD5118: How host-side pull-up resistor works in Open-Drain/Push-Pull compatible mode?
Hi Renesas, As JEDEC shown, the SPD Hub supports both open-drain mode and push-pull mode for I2C and I3C compatibility. Open-drain mode requires a pull-up resistor on board or on die, while push-pull mode doesn't. Is there already a specific function in the SPD5118 ...
Jul 2, 2024 -
How can SPD5118 work in I3C mode with push-pull drivers for both host side and local side?
How can SPD5118 work in I3C mode with push-pull drivers for both host side and local side? Is there any configurable register or method to set SPD5118 as push-pull drivers for both host side and local side in I3C mode?
Oct 17, 2024
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