9 Firmware Updates
Whenever the on-board software must be upgraded or modified, the new firmware can be downloaded to the
internal flash memory via the clock’s serial port COM0. There is no need to open the computer case and insert
a new EPROM.
A loader program shipped together with the file containing the image of the new firmware sends the new
firmware from one of the computer’s serial ports to the clock’s serial port COM0. The bootstrap loader does not
depend on the contents of the flash memory, so if the update procedure is interrupted, it can easily be repeated.
The contents of the program memory will not be modified until the loader program has sent the command
to erase the flash memory. So if the button has been pressed accidentally, the system will be ready to operate
again after the computer has been turned off and then on again.
26
Date: 6th May 2021
TCR180PEX-EL
Содержание TCR180PEX-EL
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