| 摘要 |
<p>An electronically programmable read-only memory module (12) has an embedded micro-controller (18) for program/data updating. Upon power up, the module (12) acts as a prior art ROM. The embedded micro-controller (18) in a standby mode is responsive to data arriving from a download communication interface (16) that is accessible by an external port (26) on the module (12). The external port (26) and download communication interface (16) is independent of the system of which the module (12) is an operating component. When a command is received from the download communication interface (16), the micro-controller (18) switches the memory device (12) to respond to micro-controller inputs that starts an update session. The micro-controller (18) receives download data from the download communication interface (16) and writes it into the memory device (12). When the download process terminates, the micro-controller (18) switches the memory device (12) back to its system interface.</p> |
