Description
STM32F21xxx
2.1
Full compatibility throughout the family
The STM32F215xx and STM32F217xx constitute the STM32F21x family whose members
are fully pin-to-pin, software and feature compatible, allowing the user to try different
memory densities and peripherals for a greater degree of freedom during the development
cycle.
The STM32F215xx and STM32F217xx devices maintain a close compatibility with the
whole STM32F10xxx family. All functional pins are pin-to-pin compatible. The
STM32F215xx and STM32F217xx, however, are not drop-in replacements for the
STM32F10xxx devices: the two families do not have the same power scheme, and so their
power pins are different. Nonetheless, transition from the STM32F10xxx to the STM32F21x
family remains simple as only a few pins are impacted.
Figure 3 and Figure 1 provide compatible board designs between the STM32F21x and the
STM32F10xxx family.
Figure 1. Compatible board design between STM32F10xx and STM32F2xx
for LQFP64 package
48
49 47
64
1
VSS
VSS
33
32
31
17
16
VSS
VSS 0 Ω resistor or soldering bridge
present for the STM32F10xx
configuration, not present in the
STM32F2xx configuration
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Doc ID 17050 Rev 8