STM32L072CB datasheet(87/160 Pages) STMICROELECTRONICS

87 / 160 page

DS10689 Rev 5

87/160

STM32L072xx

Electrical characteristics

122

6.3.7

Internal clock source characteristics

The parameters given in Table 47 are derived from tests performed under ambient

temperature and VDD supply voltage conditions summarized in Table 26.

High-speed internal 16 MHz (HSI16) RC oscillator

Figure 25. HSI16 minimum and maximum value versus temperature

Table 47. 16 MHz HSI16 oscillator characteristics

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

fHSI16

Frequency

VDD = 3.0 V

MHz

TRIM

(1)(2)

1. 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).

HSI16 user-

trimmed resolution

Trimming code is not a multiple of 16

± 0.4

0.7

Trimming code is a multiple of 16

± 1.5

ACCHSI16

(2)

2. Guaranteed by characterization results.

Accuracy of the

factory-calibrated

HSI16 oscillator

VDDA = 3.0 V, TA = 25 °C

-1(3)

3. Guaranteed by test in production.

-1(3)

VDDA = 3.0 V, TA = 0 to 55 °C

-1.5

1.5

VDDA = 3.0 V, TA = -10 to 70 °C

-2

VDDA = 3.0 V, TA = -10 to 85 °C

-2.5

VDDA = 3.0 V, TA = -10 to 105 °C

-4

VDDA = 1.65 V to 3.6 V

TA = − 40 to 125 °C

-5.45

3.25

tSU(HSI16)(2)

HSI16 oscillator

startup time

3.7

µs

IDD(HSI16)(2)

HSI16 oscillator

power consumption

100

140

µA

MSv34791V1

-6.00%

-5.00%

-4.00%

-3.00%

-2.00%

-1.00%

0.00%

1.00%

2.00%

3.00%

4.00%

-60

-40

-20

100

120

140

1.65V min

3V typ

3.6V max

1.65V max

3.6V min

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