STM32L462CEU6 datasheet(40/198 Pages) STMICROELECTRONICS

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Functional overview

STM32L462CE STM32L462RE STM32L462VE

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DocID029969 Rev 1

without having any impact on the timing of “injected” conversions

–

“injected” conversions for precise timing and with high conversion priority

3.22

Random number generator (RNG)

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

analog circuit.

3.23

Advanced encryption standard hardware accelerator (AES)

The devices embed an AES hardware accelerator can be used to both encipher and

decipher data using AES algorithm.

The AES peripheral supports:

•

Encryption/Decryption using AES Rijndael Block Cipher algorithm

•

NIST FIPS 197 compliant implementation of AES encryption/decryption algorithm

•

128-bit and 256-bit register for storing the encryption, decryption or derivation key (4x

32-bit registers)

•

Electronic codebook (ECB), Cipher block chaining (CBC), Counter mode (CTR), Galois

Counter Mode (GCM), Galois Message Authentication Code mode (GMAC) and Cipher

Message Authentication Code mode (CMAC) supported.

•

Key scheduler

•

Key derivation for decryption

•

128-bit data block processing

•

128-bit, 256-bit key length

•

1x32-bit INPUT buffer and 1x32-bit OUTPUT buffer.

•

One 128-bit Register for the initialization vector when AES is configured in CBC mode

or for the 32-bit counter initialization when CTR mode is selected, GCM mode or

CMAC mode.

•

Automatic data flow control with support of direct memory access (DMA) using 2

channels, one for incoming data, and one for outcoming data.

•

Suspend a message if another message with a higher priority needs to be processed

3.24

Timers and watchdogs

The STM32L462xx includes one advanced control timers, up to five general-purpose timers,

two basic timers, two low-power timers, two watchdog timers and a SysTick timer. The table

below compares the features of the advanced control, general purpose and basic timers.

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