Electronic device having one-time-programmable (OTP) memory and method for writing and reading OTP memory
US11494262B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 19, 2021 |
| Grant date | Nov 8, 2022 |
| Priority date | — |
| Expiry date | May 19, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F11/3037
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An electronic device having a one-time-programmable (OTP) memory and a method for writing and reading an OTP memory are provided. The electronic device is adapted to perform the method for writing and reading an OTP memory. The electronic device includes an OTP memory, an internal memory, and a processor. The processor is configured to write an original value into the OTP memory as a burnt code and read the burnt code from the OTP memory. When the burnt code is not identical to the original value, the processor obtains a checksum according to the original value, the burnt code, and a check operation process, and stores the checksum into the internal memory. Upon receipt of a reading request, the processor executes a recovery operation process according to the burnt code and the checksum to generate the original value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.