Datasheet

ManualsBrandsST ManualsEmbedded Processors & ControllersMicrocontroller 32bit 128KB LQFP

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STM32L431xx Electrical characteristics

DocID028800 Rev 1 101/200

Table 38. Current consumption in VBAT mode

Symbol Parameter

Conditions TYP MAX

(1)

Unit

-V

BAT

25 °C 55 °C 85 °C 105 °C 125 °C 25 °C 55 °C 85 °C 105 °C 125 °C

(VBAT)

Backup domain

supply current

RTC disabled

1.8 V 2 12 66 193 540 5 30 165 482 1350

2.4 V 1 12 73 217 600 6 30 182 542 1500

3 V 5 16 92 266 731 12.5 40 230 665 1928

3.6 V 6 30 161 459 1 269 15 75 402 1147 3173

RTC enabled and

clocked by LSE

bypassed at 32768 Hz

1.8 V 154 175 247 430 - - - - - -

2.4 V 228 246 335 542 - - - - - -

3 V 316 340 459 714 - - - - - -

3.6 V 419 462 684 1 140 - - - - - -

RTC enabled and

clocked by LSE

quartz

(2)

1.8 V 256 297 385 558 823 - - - - -

2.4 V 345 381 477 673 906 - - - - -

3 V 455 495 603 836 1 085 - - - - -

3.6 V 591 642 824 1 207 1 733 - - - - -

1. Guaranteed by characterization results, unless otherwise specified.

2. Based on characterization done with a 32.768 kHz crystal (MC306-G-06Q-32.768, manufacturer JFVNY) with two 6.8 pF loading capacitors.

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