STM32F437AI datasheet(41/240 Pages) STMICROELECTRONICS

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STM32F437xx and STM32F439xx

Functional overview

3.35

Digital camera interface (DCMI)

The devices embed a camera interface that can connect with camera modules and CMOS

sensors through an 8-bit to 14-bit parallel interface, to receive video data. The camera

interface can sustain a data transfer rate up to 54 Mbyte/s at 54 MHz. It features:

•

Programmable polarity for the input pixel clock and synchronization signals

•

Parallel data communication can be 8-, 10-, 12- or 14-bit

•

Supports 8-bit progressive video monochrome or raw bayer format, YCbCr 4:2:2

progressive video, RGB 565 progressive video or compressed data (like JPEG)

•

Supports continuous mode or snapshot (a single frame) mode

•

Capability to automatically crop the image

3.36

Cryptographic acceleration

The devices embed a cryptographic accelerator. This cryptographic accelerator provides a

set of hardware acceleration for the advanced cryptographic algorithms usually needed to

provide confidentiality, authentication, data integrity and non repudiation when exchanging

messages with a peer.

•

These algorithms consists of:

Encryption/Decryption

–

DES/TDES (data encryption standard/triple data encryption standard): ECB

(electronic codebook) and CBC (cipher block chaining) chaining algorithms, 64-,

128- or 192-bit key

–

AES (advanced encryption standard): ECB, CBC, GCM, CCM, and CTR (counter

mode) chaining algorithms, 128, 192 or 256-bit key

Universal hash

–

SHA-1 and SHA-2 (secure hash algorithms)

–MD5

–HMAC

The cryptographic accelerator supports DMA request generation.

3.37

Random number generator (RNG)

All devices embed an RNG that delivers 32-bit random numbers generated by an integrated

analog circuit.

3.38

General-purpose input/outputs (GPIOs)

Each of the GPIO pins can be configured by software as output (push-pull or open-drain,

with or without pull-up or pull-down), as input (floating, with or without pull-up or pull-down)

or as peripheral alternate function. Most of the GPIO pins are shared with digital or analog

alternate functions. All GPIOs are high-current-capable and have speed selection to better

manage internal noise, power consumption and electromagnetic emission.

The I/O configuration can be locked if needed by following a specific sequence in order to

avoid spurious writing to the I/Os registers.

STM32F437AI Datasheet(PDF) 41 Page - STMicroelectronics

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