STM8L151C2 datasheet(75/123 Pages) STMICROELECTRONICS

75 / 123 page

DS7204 Rev 11

75/123

STM8L151x2, STM8L151x3

Electrical parameters

102

Figure 17. 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 is based on characterization results, not tested in production,

unless otherwise specified.

MSv37776V1

OSCOUT

OSCIN

fLSE

CL1

STM8

Resonator

Consumption

control

Resonator

CL2

Table 32. HSI oscillator characteristics

Symbol

Parameter

Conditions(1)(2)

Min

Typ

Max

Unit

fHSI

Frequency

VDD = 3.0 V

MHz

ACCHSI

Accuracy of HSI

oscillator (factory

calibrated)

VDD = 3.0 V, TA = 25 °C

-1 (3)

-1(3)

VDD = 3.0 V, 0 °C ≤TA ≤ 55 °C

-1.5

1.5

VDD = 3.0 V, -10 °C ≤TA ≤ 70 °C

-2

VDD = 3.0 V, -10 °C ≤TA ≤ 85 °C

-2.5

VDD = 3.0 V, -10 °C ≤TA ≤ 125 °C

-4.5

1.65 V

≤VDD ≤ 3.6 V,

-40 °C

≤TA ≤ 125 °C

-4.5

TRIM

HSI user trimming

step(4)

Trimming code

≠ multiple of 16

0.4

0.7

Trimming code = multiple of 16

± 1.5

tsu(HSI)

HSI oscillator setup

time (wakeup time)

3.7

6(5)

µs

IDD(HSI)

HSI oscillator power

consumption

100

140(5)

µA

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

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

Tested in production.

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 “STM8L15x internal RC oscillator calibration” application note for

more details.

Guaranteed by design.

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