Internal Clock Source Characteristics; Table 35. Hsi Oscillator Characteristics; Figure 18. Hsi Oscillator Accuracy Characterization Results For Soldered Parts - STMicroelectronics STM32F031F4 Manual

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Electrical characteristics
6.3.8

Internal clock source characteristics

The parameters given in
temperature and supply voltage conditions summarized in
conditions. The provided curves are characterization results, not tested in production.
High-speed internal (HSI) RC oscillator
Symbol
f
HSI
TRIM
DuCy
(HSI)
ACC
HSI
t
su(HSI)
I
DDA(HSI)
1. V = 3.3 V, T
DDA
2. Guaranteed by design, not tested in production.
3. Data based on characterization results, not tested in production.
4. Factory calibrated, parts not soldered.

Figure 18. HSI oscillator accuracy characterization results for soldered parts

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Table 35 are derived from tests performed under ambient

Table 35. HSI oscillator characteristics

Parameter
Frequency
HSI user trimming step
Duty cycle
Accuracy of the HSI
oscillator
HSI oscillator startup time
HSI oscillator power
consumption
= -40 to 105°C unless otherwise specified.
A
DocID025743 Rev 3
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Table 18: General operating
Conditions
-
-
-
T = -40 to 105°C
A
T = -10 to 85°C
A
T = 0 to 85°C
A
T = 0 to 70°C
A
T = 0 to 55°C
A
T = 25°C
A
-
-
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021-31660491
STM32F031x4 STM32F031x6
(1)
Min Typ Max
- 8 -
(2)
- - 1
(2) (2)
45 - 55
(3) (3)
-2.8 - 3.8
(3) (3)
-1.9 - 2.3
(3) (3)
-1.9 - 2
(3) (3)
-1.3 - 2
(3) (3)
-1 - 2
(4) (4)
-1 - 1
(2) (2)
1 - 2
(2)
- 80 100
021-31660491
Unit
MHz
%
%
%
µs
µA