AN2857 datasheet(23/31 Pages) STMICROELECTRONICS

23 / 31 page

AN2857

Power consumption and wakeup time measurements and results

Doc ID 15241 Rev 3

23/31

5.1.4

Power consumption results in active halt mode

These measurements are taken when the device is in halt phase of active halt mode.

5.1.5

Power consumption results in halt mode

Table 8.

Power consumption results in active halt mode (MVR on LPVR off)

Symbol

Parameter

Condition

VDD = 3.3 V VDD = 5 V Unit

Clock

Flash

ITOT

Supply current

in active halt

mode (halt

phase)

HSE crystal 24 MHz

fAWU = 24 MHz/PRSC = 128 kHz

700

1260

µA

Off

640

1200

HSE crystal 16MHz

fAWU = 16 MHz/PRSC = 128 kHz

600

1000

Off

540

940

HSE crystal 8 MHz

fAWU = 8 MHz/PRSC = 128 kHz

500

1040

Off

440

980

HSE crystal 4 MHz

fAWU = 4 MHz/PRSC = 128 kHz

460

970

Off

400

910

LSI 128 kHz

fAWU = 128 kHz

200

Off

140

Table 9.

Power consumption results in active halt mode (MVR off LPVR on)

Symbol

Parameter

Condition

VDD = 3.3 V

VDD = 5

Unit

Clock

Flash

ITOT

Supply current

in active halt

mode (halt

phase)

LSI 128 kHz

fAWU = 128 kHz

µA

Off

Table 10.

Power consumption results in halt mode (MVR off LPVR on)

Symbol

Parameter

Condition

VDD = 3.3 V

VDD = 5 V Unit

ITOT

Supply

current in

halt mode

Flash in operating mode

61.5

63.5

µA

Flash in power-down mode

4.5

6.5

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