STM32L073X8 Datasheet, PDF (85/139 Pages) STMicroelectronics – Ultra-low-power 32-bit MCU ARM-based Cortex-M0+, up to 192KB Flash, 20KB SRAM, 6KB EEPROM, LCD, USB, ADC, DACs

STM32L073xx
Electrical characteristics
High-speed internal 48 MHz (HSI48) RC oscillator
Table 48. HSI48 oscillator characteristics⁽¹⁾
Symbol
Parameter
Conditions
Min
Typ
f_HSI48
TRIM
Frequency
HSI48 user-trimming step
DuCy_(HSI48) Duty cycle
Accuracy of the HSI48
ACC_HSI48 oscillator (factory calibrated
before CRS calibration)
T_A = 25 °C
t_su(HSI48)
I_DDA(HSI48)
HSI48 oscillator startup time
HSI48 oscillator power
consumption
-
0.09⁽²⁾
45⁽²⁾
48
0.14
-
-4⁽³⁾
-
-
-
-
330
1. V_DDA = 3.3 V, T_A = –40 to 125 °C unless otherwise specified.
2. Guaranteed by design.
3. Guaranteed by characterization results.
Max
-
0.2⁽²⁾
55⁽²⁾
Unit
MHz
%
%
4⁽³⁾
%
6⁽²⁾
µs
380⁽²⁾ µA
Low-speed internal (LSI) RC oscillator
Table 49. LSI oscillator characteristics
Symbol
Parameter
Min
Typ
Max
f_LSI(1)
LSI frequency
26
38
56
D_LSI(2)
t_su(LSI)(3)
I_DD(LSI)(3)
LSI oscillator frequency drift
0°C  T_A  85°C
LSI oscillator startup time
LSI oscillator power consumption
-10
-
4
-
-
200
-
400
510
1. Guaranteed by test in production.
2. This is a deviation for an individual part, once the initial frequency has been measured.
3. Guaranteed by design.
Unit
kHz
%
µs
nA
Multi-speed internal (MSI) RC oscillator
Symbol
f_MSI
Table 50. MSI oscillator characteristics
Parameter
Condition
Frequency after factory calibration, done at
V_DD= 3.3 V and T_A = 25 °C
MSI range 0
MSI range 1
MSI range 2
MSI range 3
MSI range 4
MSI range 5
MSI range 6
Typ Max Unit
65.5
-
131
-
kHz
262
-
524
-
1.05
-
2.1
- MHz
4.2
-
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