STM32F091XB Datasheet, PDF (73/127 Pages) STMicroelectronics – ARM-based 32-bit MCU, up to 256 KB Flash, CAN, 12 timers, ADC, DAC & comm. interfaces, 2.0 - 3.6V

STM32F091xB STM32F091xC
Electrical characteristics
High-speed internal 14 MHz (HSI14) RC oscillator (dedicated to ADC)
Table 42. HSI14 oscillator characteristics⁽¹⁾
Symbol
Parameter
Conditions
Min Typ
f_HSI14
TRIM
Frequency
HSI14 user-trimming step
DuCy_(HSI14) Duty cycle
ACC_HSI14
Accuracy of the HSI14
oscillator (factory calibrated)
t_su(HSI14)
I_DDA(HSI14)
HSI14 oscillator startup time
HSI14 oscillator power
consumption
-
-
14
-
-
-
-
45⁽²⁾
-
T_A = –40 to 105 °C –4.2⁽³⁾
-
T_A = –10 to 85 °C –3.2⁽³⁾
-
T_A = 0 to 70 °C
–2.5⁽³⁾
-
T_A = 25 °C
-
–1
-
1⁽²⁾
-
-
-
100
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 Unit
-
1⁽²⁾
55⁽²⁾
5.1⁽³⁾
3.1⁽³⁾
2.3⁽³⁾
1
2⁽²⁾
MHz
%
%
%
%
%
%
µs
150⁽²⁾ µA
Figure 20. HSI14 oscillator accuracy characterization results

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