STM32F405xx, STM32F407xx
Description
2.1
Full compatibility throughout the family
The STM32F405xx and STM32F407xx are part of the STM32F4 family. They are fully pin-
to-pin, software and feature compatible with the STM32F2xx devices, allowing the user to
try different memory densities, peripherals, and performances (FPU, higher frequency) for a
greater degree of freedom during the development cycle.
The STM32F405xx and STM32F407xx devices maintain a close compatibility with the
whole STM32F10xxx family. All functional pins are pin-to-pin compatible. The
STM32F405xx and STM32F407xx, 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 STM32F40x
family remains simple as only a few pins are impacted.
Figure 4, Figure 3, Figure 2, and Figure 1 give compatible board designs between the
STM32F40x, STM32F2xxx, and STM32F10xxx families.
Figure 1. Compatible board design between STM32F10xx/STM32F4xx for LQFP64
V
SS
V
SS
48
33
31
32
49
47
V
SS
V
SS
0 Ω resistor or soldering bridge
present for the STM32F10xx
configuration, not present in the
STM32F4xx configuration
64
17
1
16
ai18489
DocID022152 Rev 4
15/185
STMICROELECTRONICS [ ST ]
