STM32L151VD datasheet(16/140 Pages) STMICROELECTRONICS

16 / 140 page

Functional overview

STM32L151xD STM32L152xD

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Doc ID 022027 Rev 6

Table 3.

Functionalities depending on the operating power supply range

Operating power

supply range

DAC and ADC

operation

USB

Dynamic

voltage scaling

range

I/O operation

VDD = 1.65 to 1.8 V

Not functional

Range 2 or

range 3

Degraded speed

performance

VDD = 1.8 to 2.0 V

Conversion time

up to 500 Ksps

Not functional

Range 2 or

range 3

Degraded speed

performance

VDD = 2.0 to 2.4 V

Conversion time

up to

500 Ksps

Functional(1)

To be USB compliant from the IO voltage standpoint, the minimum VDD is 3.0 V.

Range 1, range 2

or range 3

Full speed operation

VDD = 2.4 to 3.6 V

Conversion time

up to

1 Msps

Functional(1)

Range 1, range 2

or range 3

Full speed operation

Table 4.

CPU frequency range depending on dynamic voltage scaling

CPU frequency range

Dynamic voltage scaling range

16 MHz to 32 MHz (1ws)

32 kHz to 16 MHz (0ws)

Range 1

8 MHz to 16 MHz (1ws)

32 kHz to 8 MHz (0ws)

Range 2

2.1MHz to 4.2 MHz (1ws)

32 kHz to 2.1 MHz (0ws)

Range 3

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