TMPM330 - Keil

(6) Operation of Boot Program
Under development
TMPM330 (rev 0.4)17-24
TMPM330
When Single Boot mode is selected, the boot program is automatically executed on startup. The
boot program offers these three commands, of which the details are provided on the following
subsections. The addresses described in this section are the virtual unless otherwise noted.
1. RAM Transfer command
The RAM Transfer command stores program code transferred from a host controller to the
on-chip RAM and executes the program once the transfer is successfully completed. The
maximum program size is 31 kbytes. The RAM storage start address must be set within the
range.
The RAM Transfer command can be used to download a flash programming routine of your
own; this provides the ability to control on-board programming of the flash memory in a
unique manner. The programming routine must utilize the flash memory command
sequences described in Section17.3.
Before initiating a transfer, the RAM Transfer command checks a password sequence
coming from the controller against that stored in the flash memory.
2. Show Flash Memory Sum command
The Show Flash Memory Sum command adds the contents of the 512 kbytes of the flash
memory together. The boot program does not provide a command to read out the contents
of the flash memory. Instead, the Flash Memory Sum command can be used for software
revision management.
3. Show Product Information command
The Show Product Information command provides the product name, on-chip memory
configuration and the like. This command also reads out the contents of the flash memory
locations at addresses 0x3F87_FFF0 through 0x3F87_FFF3. In addition to the Show Flash
Memory Sum command, these locations can be used for software revision management.
Flash Memory Operation