STM32L162VC-A datasheet(27/128 Pages) STMICROELECTRONICS

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STM32L162xC/C-A

Functional overview

algorithm (compatible with FIPS PUB 197, 2001 Nov 26).

•

Key scheduler

•

Key derivation for decryption

•

128-bit data block processed

•

128-bit key length

•

213 clock cycles to encrypt/decrypt one 128-bit block

•

Electronic codebook (ECB), cypher block chaining (CBC), and counter mode (CTR)

supported by hardware.

AES data flow can be served by 2ch (DIN/DOUT) of the DMA2 controller

3.17

Timers and watchdogs

The ultra-low-power STM32L162xC/C-A devices include seven general-purpose timers, two

basic timers, and two watchdog timers.

Table 6 compares the features of the general-purpose and basic timers.

3.17.1

General-purpose timers (TIM2, TIM3, TIM4, TIM5, TIM9, TIM10 and

TIM11)

There are seven synchronizable general-purpose timers embedded in the

STM32L162xC/C-A devices (see Table 6 for differences).

TIM2, TIM3, TIM4, TIM5

TIM2, TIM3, TIM4 are based on 16-bit auto-reload up/down counter. TIM5 is based on a 32-

bit auto-reload up/down counter. They include a 16-bit prescaler. They feature four

independent channels each for input capture/output compare, PWM or one-pulse mode

output. This gives up to 16 input captures/output compares/PWMs on the largest packages.

TIM2, TIM3, TIM4, TIM5 general-purpose timers can work together or with the TIM10,

TIM11 and TIM9 general-purpose timers via the Timer Link feature for synchronization or

Table 6. Timer feature comparison

Timer

Counter

resolution

Counter type

Prescaler factor

DMA

request

generation

Capture/compare

channels

Complementary

outputs

TIM2,

TIM3,

TIM4

16-bit

Up, down,

up/down

Any integer between

1 and 65536

Yes

TIM5

32-bit

Up, down,

up/down

Any integer between

1 and 65536

Yes

TIM9

16-bit

Up, down,

up/down

Any integer between

1 and 65536

TIM10,

TIM11

16-bit

Any integer between

1 and 65536

TIM6,

TIM7

16-bit

Any integer between

1 and 65536

Yes

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