Table 39. Hsi14 Oscillator Characteristics; Figure 20. Hsi14 Oscillator Accuracy Characterization Results - STMicroelectronics STM32F042G4 Manual

Electrical characteristics
High-speed internal 14 MHz (HSI14) RC oscillator (dedicated to ADC)
Symbol
f
HSI14
TRIM
DuCy
(HSI14)
ACC
HSI14
t
su(HSI14)
I
DDA(HSI14)
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.
70/117

Table 39. HSI14 oscillator characteristics

Parameter
Frequency
HSI14 user-trimming step
Duty cycle
Accuracy of the HSI14
oscillator (factory calibrated)
HSI14 oscillator startup time
HSI14 oscillator power
consumption
= –40 to 105 °C unless otherwise specified.
A

Figure 20. HSI14 oscillator accuracy characterization results

DocID025832 Rev 2
Conditions Min
45
T = –40 to 105 °C –4.2
A
T = –10 to 85 °C –3.2
A
T = 0 to 70 °C –2.5
A
T = 25 °C –1
A
1
STM32F042xx
(1)
Typ Max Unit
- 14 - MHz
(2)
- - 1
(2) (2)
- 55
(3) (3)
- 5.1
(3) (3)
- 3.1
(3) (3)
- 2.3
- 1
(2) (2)
- 2
(2)
- 100 150
%
%
%
%
%
%
μs
μA