STM8AL3136 datasheet(77/124 Pages) STMICROELECTRONICS

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DocID18474 Rev 7

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STM8AL313x/4x/6x STM8AL3L4x/6x

Electrical parameters

108

Figure 16. LSE oscillator circuit diagram

Internal clock sources

Subject to general operating conditions for VDD, and TA.

High speed internal RC oscillator (HSI)

In the following table, data are based on characterization results and are not tested in

production, unless otherwise specified.

Table 34. HSI oscillator characteristics

Symbol

Parameter

Conditions(1)

1. VDD = 3.0 V, TA = -40 to 125 °C unless otherwise specified.

Min

Typ

Max

Unit

fHSI

Frequency

VDD = 3.0 V

MHz

ACCHSI

HSI oscillator

user trimming

accuracy

Trimmed by the application for any VDD

and TA conditions

-1

HSI oscillator

accuracy (factory

calibrated)

VDD ≤ 1.8 V ≤ VDD ≤ 3.6 V,

-40 °C

≤ TA ≤ 125 °C

-5

TRIM

HSI user

trimming step(2)

2. The trimming step differs depending on the trimming code. It is usually negative on the codes which are

multiples of 16 (0x00, 0x10, 0x20, 0x30...0xE0). Refer to the AN3101 “STM8L05xxx/15xxx, STM8L162xx

and STM8AL31xx/3Lxx internal RC oscillator calibration” application note for more details.

Trimming code

≠ multiple of 16

0.4

0.7(2)

Trimming code = multiple of 16

1.5(2)

tsu(HSI)

HSI oscillator

setup time

(wakeup time)

3.7

6(3)

3. Data guaranteed by design, not tested in production.

µs

IDD(HSI)

HSI oscillator

power

consumption

100 140(3)

µA

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