OTP control logic with randomization for sensing and writing fuse values
US11295826B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 30, 2021 |
| Grant date | Apr 5, 2022 |
| Priority date | — |
| Expiry date | Mar 30, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11C17/16
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method and apparatus are described for OTP control logic with randomization for sensing and writing fuse values. In an embodiment, OTP control logic has an address counter to determine an address of a fuse to be read from an OTP fuse box and a corresponding address of a shadow register, a fuse box addressing circuit to read a fuse value from a fuse of the fuse box, a clock circuit coupled to the address counter to provide a clock signal to the address counter, and a randomization circuit to interrupt the clock signal at random times to prevent the address counter from determining a next address in response to the clock signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.