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AN4073 датащи(PDF) 23 Page - STMicroelectronics

номер детали AN4073
подробное описание детали  How to improve ADC accuracy when using STM32F2xx and STM32F4xx microcontrollers
PDF  32 Pages
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производитель  STMICROELECTRONICS [STMicroelectronics]
домашняя страница  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

AN4073 датащи(HTML) 23 Page - STMicroelectronics

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AN4073
STM32F4 ADC accuracy options
31
In the same conditions, when (Data+Instruction) cache ON and Prefetch OFF, using the
Default STM32 configuration with STM32F2xx or STM32F405/F415/F407/F417 gives a
maximum dispersion of 18 LSB (refer to Table 4) while, in this case, the maximum
dispersion is 8 LSB.
This confirms that the default STM32 configuration embedded on these products allows to
achieve about 50 % of dispersion code versus STM32F2xx/F405/F415/F407/F417, and
about 75 % when one of the options is active.
Figure 12. Distribution of ADC codes when (D+I) cache ON + Prefetch OFF VIN=0.3 V
0
5000
10000
15000
20000
25000
30000
371
372
373
374
375
376
377
code (dec)
Default
Option 1
Option 2
MS30760V1



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