STM8AF6268ITCU datasheet(55/99 Pages) STMICROELECTRONICS

55 / 99 page

DocID14952 Rev 11

55/99

STM8AF6246/48/66/68

Electrical characteristics

Current consumption for on-chip peripherals

Table 24. Total current consumption in Halt and Active-halt modes.

General conditions for VDD apply, TA = −40 to 55 °C

Symbol

Parameter

Conditions

Typ

Max

Unit

Main

voltage

regulator

(MVR)(1)

Flash

mode(2)

Clock source and

specific

temperature

condition

IDD(H)

Supply current in Halt mode

Off

Power-

down

Clocks stopped

35(3)

µA

Clocks stopped,

TA = 25 °C

525

IDD(AH)

Supply current in Active-halt

mode with regulator on

Power-

down

Ext. clock 16 MHz

fMASTER = 125 kHz

770

900(3)

LSI clock 128 kHz

150

230(3)

Supply current in Active-halt

mode with regulator off

Off

Power-

down

LSI clock 128 kHz

42(3)

LSI clock 128 kHz,

TA = 25 °C

tWU(AH)

Wakeup time from Active-

halt mode with regulator on

Operating

mode

TA = -40 to 150 °C

30(3)

µs

Wakeup time from Active-

halt mode with regulator off

Off

80(3)

1. Configured by the REGAH bit in the CLK_ICKR register.

2. Configured by the AHALT bit in the FLASH_CR1 register.

3. Data based on characterization results. Not tested in production.

Table 25. Oscillator current consumption

Symbol

Parameter

Conditions

Typ

Max(1)

1. During startup, the oscillator current consumption may reach 6 mA.

Unit

IDD(OSC)

HSE oscillator current

consumption(2)

2. The supply current of the oscillator can be further optimized by selecting a high quality resonator with small

Rm value. Refer to crystal manufacturer for more details

Quartz or

ceramic

resonator,

CL = 33 pF

VDD = 5 V

fOSC = 24 MHz

2.0(3)

3. Informative data.

fOSC = 16 MHz

0.6

fOSC = 8 MHz

0.57

Quartz or

ceramic

resonator,

CL = 33 pF

VDD = 3.3 V

fOSC = 24 MHz

0.5

1.0(3)

fOSC = 16 MHz

0.25

fOSC = 8 MHz

0.18

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