stm32f1xx
Differences
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stm32f1xx [2016/12/16 10:11] – [core board] kingkevin | stm32f1xx [2017/03/31 20:22] – [core board] kingkevin | ||
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Line 102: | Line 102: | ||
* boot select | * boot select | ||
* power LED | * power LED | ||
- | * user LED, on PC13 | + | * user LED, on PC13 (warning: switching this LED heavily affects the RTC) |
* reset button (NRST) | * reset button (NRST) | ||
* 32.768 kHz real time clock (RTC) | * 32.768 kHz real time clock (RTC) | ||
Line 118: | Line 118: | ||
Mine for example has a 10 kΩ pull-up (to 3.3 V) resistor on USB D+/PA12 instead if a 4.7kΩ (to 5 V), although USB devices use a 1.5 kΩ resistor to pull up (to 3.3 V) usually. | Mine for example has a 10 kΩ pull-up (to 3.3 V) resistor on USB D+/PA12 instead if a 4.7kΩ (to 5 V), although USB devices use a 1.5 kΩ resistor to pull up (to 3.3 V) usually. | ||
- | ===== code board ===== | + | ===== core board ===== |
{{ : | {{ : | ||
Line 168: | Line 168: | ||
drawbacks: | drawbacks: | ||
* very few power pins | * very few power pins | ||
+ | |||
+ | **warning**: | ||
====== flashing ====== | ====== flashing ====== | ||
stm32f1xx.txt · Last modified: 2024/01/07 17:49 by 127.0.0.1