STM8L051F3 datasheet(57/96 Pages) STMICROELECTRONICS

57 / 96 page

DS9178 Rev 4

57/96

STM8L051F3

Electrical parameters

In the following table, data is based on characterization results, unless otherwise specified.

Table 21. Total current consumption and timing in Active-halt mode at VDD = 1.8 V to 3.6 V

Symbol

Parameter

Conditions (1)

Typ Max

Unit

IDD(AH)

Supply current in

Active-halt mode

LSI RC (at 38 kHz)

TA = -40 °C to 25 °C

0.9

2.1

μA

TA = 55 °C

1.2

TA = 85 °C

1.5

3.4

LSE external clock (32.768

kHz)(2)

TA = -40 °C to 25 °C

0.5

1.2

TA = 55 °C

0.62

1.4

TA = 85 °C

0.88

2.1

IDD(WUFAH)

Supply current during

wakeup time from

Active-halt mode

(using HSI)

2.4

tWU_HSI(AH)(3)(4)

Wakeup time from

Active-halt mode to

Run mode (using HSI)

4.7

μs

tWU_LSI(AH)(3)

(4)

Wakeup time from

Active-halt mode to

Run mode (using LSI)

150

μs

1. No floating I/O, unless otherwise specified.

2. Oscillator bypassed (LSEBYP = 1 in CLK_ECKCR). When configured for extenal crystal, the LSE consumption

(IDD LSE) must be added. Refer to Table 29.

3. Wakeup time until start of interrupt vector fetch.

The first word of interrupt routine is fetched 4 CPU cycles after tWU.

4. ULP=0 or ULP=1 and FWU=1 in the PWR_CSR2 register.

Table 22. Typical current consumption in Active-halt mode, RTC clocked by LSE

external crystal

Symbol

Parameter

Condition(1)

Typ

Unit

IDD(AH) (2)

Supply current in Active-halt

mode

VDD = 1.8 V

LSE

1.15

µA

LSE/32(3)

1.05

VDD = 3 V

LSE

1.30

LSE/32(3)

1.20

VDD = 3.6 V

LSE

1.45

LSE/32(3)

1.35

1. No floating I/O, unless otherwise specified.

2. Based on measurements on bench with 32.768 kHz external crystal oscillator.

3. RTC clock is LSE divided by 32.

STM8L051F3 Datasheet(PDF) 57 Page - STMicroelectronics

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