Random access electrically programmable e-fuse ROM
US7817455B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 30, 2006 |
| Grant date | Oct 19, 2010 |
| Priority date | — |
| Expiry date | Aug 30, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11C29/027
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A one-time-programmable-read-only-memory (OTPROM) is implemented in a two-dimensional array of aggressively scaled suicide migratable e-fuses. Word line selection is performed by decoding logic operating at VDD while the bit line drive is switched between VDD and a higher voltage, Vp, for programming. The OTPROM is thus compatible with and can be integrated with other technologies without a cost adder and supports optimization of the high current path for minimal voltage drop during fuse programming. A differential sense amplifier with a programmable reference is used for improved sense margins and can support an entire bit line rather than sense amplifiers being provided for individual fuses.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.