Difference between revisions of "STM32L432Kx Flash Size"
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Unfortunately, while I wanted the 256 kB version, only the 128 kB version was available. | Unfortunately, while I wanted the 256 kB version, only the 128 kB version was available. | ||
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| + | The [[STM32]] [[Blue Pill]] boards mostly use Chinese clone [[MCU]]s but there has been a lot of writing about the original ones having 128 kB of flash rather than the 64 kB specified by the datasheet. There is even a [https://mecrisp-stellaris-folkdoc.sourceforge.io/bluepill-diagnostics-v1.6.html test tool] available which can test for the hidden flash. | ||
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| + | Inspired by this, I decided to test the STM32L432KB on my own board. | ||
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| + | == Miscellaneous Links == | ||
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| + | * [https://ipfs-pin.com/ipfs/QmcYpvigogWESmwTEFM5GYZc6st2SJRAoqwKWJ8ZDtgiXb/stm32l432kb.pdf STM32L432 Datasheet] | ||
| + | * [https://mecrisp-stellaris-folkdoc.sourceforge.io/bluepill-diagnostics-v1.6.html Bluepill Diagnostics Tool] | ||
Revision as of 06:02, 20 July 2021
The STM32L432Kx is available with two different flash sizes. The STM32L432KB has got 128 kB while the STM32L432KC has got 256 kB. I recently created a USB "key" using the STM32L432. The reason for using this specific STM32 MCU was twofold:
- It is small
- It's got a built-in 48 MHz oscillator precise enough to use USB without an external crystal
Unfortunately, while I wanted the 256 kB version, only the 128 kB version was available.
The STM32 Blue Pill boards mostly use Chinese clone MCUs but there has been a lot of writing about the original ones having 128 kB of flash rather than the 64 kB specified by the datasheet. There is even a test tool available which can test for the hidden flash.
Inspired by this, I decided to test the STM32L432KB on my own board.