STM32F051X4(2012) View Datasheet(PDF) - STMicroelectronics
Part Name
Description
Manufacturer
STM32F051X4
(Rev.:2012)
(Rev.:2012)
STMicroelectronics
STM32F051X4 Datasheet PDF : 104 Pages
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STM32F051x
Electrical characteristics
High-speed internal 14 MHz (HSI14) RC oscillator (dedicated to ADC)
Table 39. HSI14 oscillator characteristics(1)
Symbol
Parameter
Conditions
Min Typ Max Unit
fHSI14
TRIM
Frequency
HSI14 user-trimming step
DuCy(HSI14) Duty cycle
ACCHSI14
Accuracy of the HSI14
oscillator (factory calibrated)
tsu(HSI14)
IDD(HSI14)
HSI14 oscillator startup time
HSI14 oscillator power
consumption
-
14
-
-
45(2)
-
TA = –40 to 105 °C –4.2(3) -
TA = –10 to 85 °C –3.2(3) -
TA = 0 to 70 °C
–1.3(3) -
TA = 25 °C
–1
-
1(2)
-
1(2)
55(2)
5.1(3)
3.1(3)
2.2(3)
1
2(2)
MHz
%
%
%
%
%
%
µs
-
100 150(2) µA
1. VDDA = 3.3 V, TA = –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.
Low-speed internal (LSI) RC oscillator
Table 40. LSI oscillator characteristics(1)
Symbol
Parameter
Min
fLSI
Frequency
30
tsu(LSI)(2) LSI oscillator startup time
-
IDD(LSI)(2) LSI oscillator power consumption
-
1. VDDA = 3.3 V, TA = –40 to 105 °C unless otherwise specified.
2. Guaranteed by design, not tested in production.
Typ
40
-
0.75
Max
Unit
50
kHz
85
µs
1.2
µA
Wakeup time from low-power mode
The wakeup times given in Table 41 is measured on a wakeup phase with a 8-MHz HSI RC
oscillator. The event used to wake up the device depends from the current operating mode:
● Stop or sleep mode: the wakeup event is WFE
● The wakeup pin used in stop and sleep mode is PA0 and in standby mode is the PA1.
All timings are derived from tests performed under ambient temperature and VDD supply
voltage conditions summarized in Table 20.
Doc ID 022265 Rev 3
63/105
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