jtag
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jtag [2017/04/06 08:08] – [Black Magic Probe] add patch kingkevin | jtag [2017/04/25 14:03] – [Baite] kingkevin | ||
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One trick to get this ridiculously low price is to use STM32F101 micro-controllers. | One trick to get this ridiculously low price is to use STM32F101 micro-controllers. | ||
Compared to the STM32F103 micro-controllers they offer less functionalities, | Compared to the STM32F103 micro-controllers they offer less functionalities, | ||
- | Well this is because these micro-controllers use the same die, but if not all STM32F103 feature tests pass after production they get packages as STM32F101, | + | Well this is because these micro-controllers use the same die, but if not all STM32F103 feature tests pass after production they get packages as STM32F101, |
+ | At least this is my guess. | ||
+ | It would be interesting to check if the other STM32F103 peripherals normally not present on the STM32F101 work as well, but I wouldn' | ||
+ | After all, they are probably marked as STM32F101 for a good reason.\\ | ||
Similarly the STM32F103C8 is only rated having 64 kB of flash because it didn't pass the flash test, compared to the 128 kB for the STM32F103CB, | Similarly the STM32F103C8 is only rated having 64 kB of flash because it didn't pass the flash test, compared to the 128 kB for the STM32F103CB, | ||
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I've also reversed the board layout to get the {{: | I've also reversed the board layout to get the {{: | ||
The connector pins are all protected with 220 ohms resistors. | The connector pins are all protected with 220 ohms resistors. | ||
+ | |||
+ | {{: | ||
+ | {{: | ||
+ | |||
+ | There is a newer version marked as " | ||
+ | * all pads for the micro-controller are present (there is even solder mask between them) | ||
+ | * they added a SWD port | ||
+ | * the STM32F103C8 has been replaced with a STM32F101CB, | ||
+ | * the passives are smaller | ||
+ | * the routing is horrible | ||
===== Black Magic Probe ===== | ===== Black Magic Probe ===== |
jtag.txt · Last modified: 2024/01/07 17:49 by 127.0.0.1