TMPM330 - Keil

(Step-5)
Under development
TMPM330 (rev 0.4)17-15
TMPM330
Next, the programming routine (a) downloads new application program code from the host controller
and programs it into the erased flash block. Once programming is complete, protection of that flash
block is turned on. It is not allowed to move program control from the programming routine (a) back to
the boot ROM.
In the example below, new program code comes from the same host controller via the same SIO0
channel as for the programming routine. However, once the programming routine has begun to
execute, it is free to change the transfer path and the source of the transfer. Create board hardware
and a programming routine to suit your particular needs.
(M330)
Boot ROM SIO2
Flash memory
New application
program code
(Step-6)
When programming of the flash memory is complete, power off the board and disconnect the cable
leading from the host to the target board. Turn on the power again so that the TMPM330 re-boots in
Single-Chip (Normal) mode to execute the new program.
(M330)
(Host)
Boot ROM SIO2
Flash memory
New application
program code
(I/O)
(Host)
(a)Programming routine
RAM
RAM
New application
program code
(a) Programming routine
0 → 1 RESET
Set to Single-Chip
Normal) mode
(BOOT=1)
Flash Memory Operation