STM32F042X4 Datasheet, PDF (67/117 Pages) STMicroelectronics – Reset and power management

STM32F042x4 STM32F042x6
Electrical characteristics
High-speed internal 48 MHz (HSI48) RC oscillator
Table 40. HSI48 oscillator characteristics⁽¹⁾
Symbol
Parameter
Conditions
Min Typ
f_HSI48 Frequency
-
TRIM HSI48 user-trimming step
-
DuCy_(HSI48) Duty cycle
ACC_HSI48
Accuracy of the HSI48
oscillator (factory calibrated)
t_su(HSI48)
I_DDA(HSI48)
HSI48 oscillator startup time
HSI48 oscillator power
consumption
-
T_A = –40 to 105 °C
T_A = –10 to 85 °C
T_A = 0 to 70 °C
T_A = 25 °C
-
-
-
0.09⁽²⁾
45⁽²⁾
-4.9⁽³⁾
-4.1⁽³⁾
-3.8⁽³⁾
-2.8
-
-
48
0.14
-
-
-
-
-
-
312
1. V_DDA = 3.3 V, T_A = –40 to 105 °C unless otherwise specified.
2. Guaranteed by design, not tested in production.
3. Data based on characterization results, not tested in production.
Max
-
0.2⁽²⁾
55⁽²⁾
4.7⁽³⁾
3.7⁽³⁾
3.4⁽³⁾
2.9
6⁽²⁾
Unit
MHz
%
%
%
%
%
%
µs
350⁽²⁾ µA
Figure 21. HSI48 oscillator accuracy characterization results

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