STM8AF6126 datasheet(52/89 Pages) STMICROELECTRONICS

52 / 89 page

Electrical characteristics

STM8AF61xx, STM8AF62xx

52/89

Doc ID 14952 Rev 6

Current consumption for on-chip peripherals

Table 26.

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)

Configured by the REGAH bit in the CLK_ICKR register.

Configured by the AHALT bit in the FLASH_CR1 register.

Data based on characterization results. Not tested in production.

Table 27.

Oscillator current consumption

Symbol

Parameter

Conditions

Typ

Max(1)

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

Unit

IDD(OSC)

HSE oscillator current

consumption(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)

Informative data.

fOSC = 16 MHz

0.6

fOSC = 8 MHz

0.57

IDD(OSC)

HSE oscillator current

consumption(2)

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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