Aes; Timers And Watchdogs; Table 7. Timer Feature Comparison - STMicroelectronics STM32L162RC Manual

STM32L162VC, STM32L162RC
implementation based on a surface charge transfer acquisition principle. It consists of
charging the sensor capacitance and then transferring a part of the accumulated charges
into a sampling capacitor until the voltage across this capacitor has reached a specific
threshold. The capacitive sensing acquisition only requires few external components to
operate. This acquisition is managed directly by the GPIOs, timers and analog I/O groups
(see Section 3.14: System configuration controller and routing
Reliable touch sensing functionality can be quickly and easily implemented using the free
STM32L1xx STMTouch touch sensing firmware library.
3.16

AES

The AES Hardware Accelerator can be used to encrypt and decrypt data using the AES
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 (D
3.17

Timers and watchdogs

The ultra-low-power STM32L162xC devices include seven general-purpose timers, two
basic timers, and two watchdog timers.
Table 7 compares the features of the general-purpose and basic timers.
Counter
Timer Counter type
resolution
TIM2,
TIM3, 16-bit
TIM4
TIM5 32-bit
TIM9 16-bit
TIM10,
16-bit
TIM11
TIM6,
16-bit
TIM7

Table 7. Timer feature comparison

Prescaler factor
Up, down, Any integer between
up/down 1 and 65536
Up, down, Any integer between
up/down 1 and 65536
Up, down, Any integer between
up/down 1 and 65536
Any integer between
Up
1 and 65536
Any integer between
Up
1 and 65536
DocID022881 Rev 10
/D ) of the DMA2 controller
IN OUT
DMA
Capture/compare
request
generation
Yes
Yes
No
No
Yes
interface).
Complementary
channels outputs
4 No
4 No
2 No
1 No
0 No
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