STM32L151CBT7ADTR datasheet(15/130 Pages) STMICROELECTRONICS

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STM32L151x6/8/B-A STM32L152x6/8/B-A

Functional overview

line source can be one of the 16 external lines. It can be the PVD output, the

Comparator 1 event or Comparator 2 event (if internal reference voltage is on). It can

also be wakened by the USB wakeup.

Stop mode consumption: refer to Table 23.

•

Standby mode with RTC

Standby mode is used to achieve the lowest power consumption and real time clock.

The internal voltage regulator is switched off so that the entire VCORE domain is

powered off. The PLL, MSI RC, HSI RC and HSE crystal oscillators are also switched

off. The LSE or LSI is still running. After entering Standby mode, the RAM and register

contents are lost except for registers in the Standby circuitry (wakeup logic, IWDG,

RTC, LSI, LSE Crystal 32K osc, RCC_CSR).

The device exits Standby mode in 60 µs when an external reset (NRST pin), an IWDG

reset, a rising edge on one of the three WKUP pins, RTC alarm (Alarm A or Alarm B),

RTC tamper event, RTC timestamp event or RTC Wakeup event occurs.

•

Standby mode without RTC

Standby mode is used to achieve the lowest power consumption. The internal voltage

regulator is switched off so that the entire VCORE domain is powered off. The PLL, MSI,

RC, HSI and LSI RC, HSE and LSE crystal oscillators are also switched off. After

entering Standby mode, the RAM and register contents are lost except for registers in

the Standby circuitry (wakeup logic, IWDG, RTC, LSI, LSE Crystal 32K osc,

RCC_CSR).

The device exits Standby mode in 60 µs when an external reset (NRST pin) or a rising

edge on one of the three WKUP pin occurs.

Standby mode consumption: refer to Table 24.

Note:

The RTC, the IWDG, and the corresponding clock sources are not stopped by entering the

Stop or Standby mode.

Table 3. Functionalities depending on the operating power supply range

Operating power

supply range

Functionalities depending on the operating power supply range(1)

1. The GPIO speed also depends from VDD voltage and the user has to refer to Table 45: I/O AC

characteristics for more information about I/O speed.

DAC and ADC

operation

USB

Dynamic voltage scaling range

VDD = 1.65 to 1.71 V

Not functional

Range 2 or Range 3

VDD= 1.71 to 1.8 V (2)

Not functional

Range 1, Range 2 or Range 3

VDD = 1.8 to 2.0 V(2)

Conversion time

up to 500 Ksps

Not functional

Range 1, Range 2 or

Range 3

VDD = 2.0 to 2.4 V

Conversion time

up to 500 Ksps

Functional(3)

Range 1, Range 2 or Range 3

VDD = 2.4 to 3.6 V

Conversion time

up to 1 Msps

Functional(3)

Range 1, Range 2 or Range 3

STM32L151CBT7ADTR Datasheet(PDF) 15 Page - STMicroelectronics

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