Z.
Not perhaps as true as it was - the software fashion for being very last minute with the final bug fixes means that devices that can be re-flashed - i.e. reprogrammed after manufacture, maybe even in the field, are popular with designers even in cases where it is not strictly necessary, as the pain of actually changing a chip for a late firmware upgrade is too great to risk.
Also for a some years now reprogrammable devices with EEPROM or even FLASH ROM internally have been actually cost competitive and in some cases cheaper than the OTP equivalent. And mask programming at the foundry is so last century as to not even be offered on may process lines any more. The military like it of course for security reasons.
Mike.
Not perhaps as true as it was - the software fashion for being very last minute with the final bug fixes means that devices that can be re-flashed - i.e. reprogrammed after manufacture, maybe even in the field, are popular with designers even in cases where it is not strictly necessary, as the pain of actually changing a chip for a late firmware upgrade is too great to risk.
Also for a some years now reprogrammable devices with EEPROM or even FLASH ROM internally have been actually cost competitive and in some cases cheaper than the OTP equivalent. And mask programming at the foundry is so last century as to not even be offered on may process lines any more. The military like it of course for security reasons.
Mike.
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