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AN3427 Datasheet(PDF) 6 Page - STMicroelectronics

Part # AN3427
Description  Migrating a microcontroller application from STM32F1 to STM32F2 series
PDF  52 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

AN3427 Datasheet(HTML) 6 Page - STMicroelectronics

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Hardware migration
AN3427
6/52
Doc ID 019001 Rev 1
2
Hardware migration
All peripherals shares the same pins in the two families, but there are some minor
differences between packages.
In fact, the STM32 F2 series maintains a close compatibility with the whole STM32 F1
series. All functional pins are pin-to-pin compatible. The STM32 F2 series, however, are not
drop-in replacements for the STM32 F1 series: the two families do not have the same power
scheme, and so their power pins are different. Nonetheless, transition from the STM32 F1
series to the STM32 F2 series remains simple as only a few pins are impacted (impacted
pins are in bold in the table below).
The figures below show examples of board designs that are compatible with both the F1 and
the F2 series.
Table 1.
STM32 F1 series and STM32 F2 series pinout differences
STM32 F1 series
STM32 F2 series
QFP64
QFP100
QFP144
Pinout
QFP64
QFP100
QFP144
Pinout
512
23
PD0 - OSC_IN
5
12
23
PH0 - OSC_IN
613
24
PD1 - OSC_OUT
6
13
24
PH1 - OSC_OUT
12
19
30
VSSA
19
30
VDD
20
31
VREF-
12
20
31
VSSA
31
49
71
VSS_1
31
49
71
VCAP1
73
106
NC
47
73
106
VCAP2
47
74
107
VSS_2
74
107
VSS2
63
99
143
VSS_3
63
VSS_3



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