Lattice Sentry I2C Monitor IP Core for MachXO3D

Resilient I2C Security IP for Platform Firmware Resiliency

Related Products

Actively Prevent Attacks Against I2C Peripherals – The Sentry I2C Monitor IP for MachXO3D monitors traffic on I2C bus to identify and block potentially illegal traffic.

Nanosecond Response Time – This FPGA IP continually monitors traffic and responds to threats instantly.

Tested and Fully Validated – This resilient IP is a pre-built security component which is part of the Lattice Sentry Platform Root of Trust solutions stack. No FPGA experience or RTL programming is necessary to implement this into your Platform Root of Trust design.


  • Monitors traffice on I2C bus for illegal activity based on programmable filter conditions
  • Support for AMBA 3 APB Protocol v1.0 for RISC-V CPU access
  • Configurable using Lattice Propel. No FPGA design or modification necessary
  • Controllable by modifying included reference C source code, which runs on interal RISC-V CPU
  • Pin location and pin-out can be selected visually using Lattice Propel to optimize board design; no RTL programming necessary
Lattice Sentry

Block Diagram

I2C Monitor Block Diagram

Ordering Information

License for this IP core is included with the following:

Family Part Number Description
MachXO3D SENTRY-PFR-XO3D-U Lattice Sentry PFR IP Package for MachXO3D - Single design License
MachXO3D SENTRY-PFR-XO3D-UT Lattice Sentry PFR IP Package for MachXO3D - Multi-Site License

You will also need the MachXO3D Encryption Security Block License to use key features of this IP in the Lattice Diamond software.

Family Part Number Description
MachXO3D SECURITY-XO3D-SW MachXO3D Encryption Security Block License


Quick Reference
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Lattice Sentry I2C Monitor - User's Guide
FPGA-IPUG-02108 1.0 8/12/2020 PDF 1.2 MB

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