STM32F372VBT6 Datasheet, PDF (77/131 Pages) STMicroelectronics – ARM Cortex-M4 32b MCU+FPU, up to 256KB Flash+32KB SRAM

STM32F37xxx
Electrical characteristics
Figure 15. Typical application with a 32.768 kHz crystal
Resonator with
integrated capacitors
CL1
OSC32_IN
32.768 kH z
resonator
Drive
programmable
amplifier
fLSE
OSC32_OU T
CL2
Note:
6.3.8
MS30253V1
An external resistor is not required between OSC32_IN and OSC32_OUT and it is forbidden
to add one.
Internal clock source characteristics
The parameters given in Table 42 are derived from tests performed under ambient
temperature and supply voltage conditions summarized in Table 22.
The provided curves are chararacterization results, not tested in production.
High-speed internal (HSI) RC oscillator
Table 42. HSI oscillator characteristics⁽¹⁾
Symbol
Parameter
Conditions
Min Typ
f_HSI
TRIM
DuCy_(HSI)
ACC_HSI
t_su(HSI)
I_DD(HSI)
Frequency
HSI user trimming step
Duty cycle
Accuracy of the HSI
oscillator (factory
calibrated)
HSI oscillator startup
time
T_A = –40 to 105 °C
T_A = –10 to 85 °C
T_A = 0 to 70 °C
T_A = 25 °C
HSI oscillator power
consumption
-
8
-
-
45⁽²⁾
-
–3.8⁽³⁾
-
–2.9⁽³⁾
-
–2.3⁽³⁾
-
–1
-
1⁽³⁾
-
-
80
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
-
1⁽²⁾
55⁽²⁾
4.6⁽³⁾
2.9⁽³⁾
–2.2⁽³⁾
1
2⁽³⁾
100⁽³⁾
Unit
MHz
%
%
%
%
%
%
µs
µA
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