Datasheet

Electrical characteristics STM32F37xxx
78/131 DocID022691 Rev 4
Figure 16. HSI oscillator accuracy characterization results
Low-speed internal (LSI) RC oscillator
6.3.9 PLL characteristics
The parameters given in Table 44 are derived from tests performed under ambient
temperature and supply voltage conditions summarized in Table 22.
Table 43. LSI oscillator characteristics
(1)
1.
V
DDA
= 3.3 V, T
A
= –40 to 105 °C unless otherwise specified.
Symbol Parameter Min Typ Max Unit
f
LSI
Frequency 30 40 60 kHz
t
su(LSI)
(2)
2. Guaranteed by design, not tested in production.
LSI oscillator startup time - - 85 µs
I
DD(LSI)
(2)
LSI oscillator power consumption - 0.75 1.2 µA
MS30986V2
-5%
-4%
-
3%
-
2%
-
1%
0%
1%
2%
3%
4%
5%
-40 -20 0 20 40 60 80 100 120
MAX
MIN
TA [°C]
ACC
HSI
Table 44. PLL characteristics
Symbol Parameter
Value
Unit
Min Typ Max
f
PLL_IN
PLL input clock
(1)
1. Take care of using the appropriate multiplier factors so as to have PLL input clock values compatible with
the range defined by f
PLL_OUT
.
1
(2)
-24
(2)
MHz
PLL input clock duty cycle 40
(2)
-60
(2)
%
f
PLL_OUT
PLL multiplier output clock 16
(2)
-72MHz
t
LOCK
PLL lock time - - 200
(2)
2. Guaranteed by design, not tested in production.
µs
Jitter Cycle-to-cycle jitter - - 300
(2)
ps