Data processing apparatus having a flash memory built-in which is rewritable by use of external device
US7057937B1 · kind B1 · utility
Assignees
Inventors
Key dates
| Filing date | Aug 10, 1998 |
| Grant date | Jun 6, 2006 |
| Priority date | — |
| Expiry date | Aug 10, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11C16/3436
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A data processing apparatus having a built-in flash memory and being capable of rewriting the built-in flash memory by use of versatilely used PROM writer has a CPU, an electrically rewritable nonvolatile flash memory both formed in a single semiconductor substrate, and is operable in a mode in which the built-in flash memory is rewritable in accordance with commands supplied from a PROM writer. The data processing apparatus has a command latch made externally writable when the above-mentioned operation mode is established, a command analyzer and a sequence controller for controlling a sequence of rewriting the flash memory in accordance with the analysis result. The command analyzer and sequence controller may be realized by the CPU.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.