How to migrate across STM32 series

AN3364

12/17

Doc ID 018608 Rev 3

GPIO

Yes

Yes++

New peripheral

Identical

Not compatible

CEC

Yes

NA

NA

NA

NA

USB FS

Device

Yes

NA

NA

NA

NA

Crypto/hash

processor

NA

Yes

NA

NA

NA

RNG

NA

Yes

NA

NA

NA

DCMI

NA

Yes

NA

NA

NA

USB OTG HS NA

Yes

NA

NA

NA

SYSCFG

NA

Yes

NA

NA

NA

Table 3.

STM32 peripheral compatibility analysis F1 versus F2 series (continued)

Peripheral

F1 series

F2 series

Compatibility

Comments

Pinout

SW compatibility

Color key:

= New feature or new architecture (Yes++)

= Same feature, but specification change or enhancement (Yes+)

= Feature not available (NA)

Table 4.

STM32 peripheral compatibility analysis F1 versus F4 series

Peripheral

F1 series

F4 series

Compatibility

Comments

Pinout

SW compatibility

FSMC

Yes

Yes+

Enhancement

Identical

Full compatibility

WWDG

Yes

Yes

Same features

NA

Full compatibility

IWDG

Yes

Yes

Same features

NA

Full compatibility

DBGMCU

Yes

Yes

Same features

NA

Full compatibility

CRC

Yes

Yes

Same features

NA

Full compatibility

EXTI

Yes

Yes

Same features

Identical

Full compatibility

CAN

Yes

Yes

Same features

Identical

Full compatibility

PWR

Yes

Yes+

Enhancement

NA

Full compatibility

RCC

Yes

Yes+

Enhancement

NA

Partial

compatibility

SPI

Yes

Yes+

TI mode / Max baudrate / I2S

full duplex

Identical

Full compatibility

USART

Yes

Yes+

Bug fix / Max baudrate / One

Sample Bit / Oversampling by 8

Identical

Full compatibility