STM8L151F3 datasheet(69/122 Pages) STMICROELECTRONICS

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DocID018780 Rev 9

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STM8L151x2, STM8L151x3

Electrical parameters

102

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

Table 23. Total current consumption and timing in Active-halt mode at VDD = 1.65 V to 3.6 V

Symbol

Parameter

Conditions (1)(2)

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

TA = 105 °C

2.6

6.6

TA = 125 °C

5.1

LSE external clock (32.768

kHz) (3)

TA = -40 °C to 25 °C

0.5

1.2

TA = 55 °C

0.62

1.4

TA = 85 °C

0.88

2.1

TA = 105 °C

2.1

4.85

TA = 125 °C

4.8

IDD(WUFAH)

Supply current during

wakeup time from

Active-halt mode

(using HSI)

2.4

tWU_HSI(AH)(4)(5)

Wakeup time from

Active-halt mode to

Run mode (using HSI)

4.7

μs

tWU_LSI(AH)(4)

(5)

Wakeup time from

Active-halt mode to

Run mode (using LSI)

150

μs

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

2. TA > 85 °C is valid only for devices with suffix 3 temperature range.

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

(IDD LSE) must be added. Refer to Table 31

4. Wakeup time until start of interrupt vector fetch.

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

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

Table 24. 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.

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