Datasheet

Electrical characteristics STM32F051x
64/105 Doc ID 022265 Rev 3
6.3.8 PLL characteristics
The parameters given in Ta ble 4 2 are derived from tests performed under ambient
temperature and supply voltage conditions summarized in Table 2 0 .
6.3.9 Memory characteristics
Flash memory
The characteristics are given at T
A
= –40 to 105 °C unless otherwise specified.
Table 41. Low-power mode wakeup timings
Symbol Parameter Conditions
Typ @VDD
Max Unit
= 2.0 V = 2.4 V = 2.7 V = 3 V = 3.3 V
t
WUSTOP
Wakeup from Stop
mode
Regulator in run
mode
4.24.24.24.24.25
µs
Regulator in low
power mode
8.05 7.05 6.6 6.27 6.05 9
t
WUSTANDBY
Wakeup from
Standby mode
60.35 55.6 53.5 52.02 50.96
t
WUSLEEP
Wakeup from Sleep
mode
1.11.11.11.11.1
Table 42. PLL characteristics
Symbol Parameter
Value
Unit
Min Typ Max
f
PLL_IN
PLL input clock
(1)
1. Take care to use the appropriate multiplier factors to obtain PLL input clock values compatible with the
range defined by f
PLL_OUT
.
1
(2)
8.0 24
(2)
MHz
PLL input clock duty cycle 40
(2)
-60
(2)
%
f
PLL_OUT
PLL multiplier output clock 16
(2)
-48MHz
t
LOCK
PLL lock time - - 200
(2)
2. Guaranteed by design, not tested in production.
µs
Jitter
PLL
Cycle-to-cycle jitter - - 300
(2)
ps