STM32L475XX Datasheet, PDF (121/193 Pages) STMicroelectronics – Ultra-low-power ARM Cortex-M4 32-bit MCU+FPU, 100DMIPS, up to 1MB Flash, 128 KB SRAM, USB OTG FS, analog, audio

STM32L475xx
Electrical characteristics
Table 51. PLL, PLLSAI1, PLLSAI2 characteristics⁽¹⁾
Symbol
Parameter
Conditions
Min Typ Max Unit
f_{PLL_IN}
PLL input clock⁽²⁾
PLL input clock duty cycle
-
4
- 16 MHz
-
45
- 55 %
f_{PLL_P_OUT} PLL multiplier output clock P
Voltage scaling Range 1
Voltage scaling Range 2
2.0645 -
2.0645 -
80
MHz
26
f_{PLL_Q_OUT} PLL multiplier output clock Q
Voltage scaling Range 1
Voltage scaling Range 2
8
- 80
MHz
8
- 26
f_{PLL_R_OUT} PLL multiplier output clock R
Voltage scaling Range 1
Voltage scaling Range 2
8
- 80
MHz
8
- 26
f_{VCO_OUT} PLL VCO output
Voltage scaling Range 1
Voltage scaling Range 2
64
- 344
MHz
64
- 128
t_LOCK
Jitter
PLL lock time
RMS cycle-to-cycle jitter
RMS period jitter
-
System clock 80 MHz
-
15 40 μs
-
40 -
±ps
-
30 -
VCO freq = 64 MHz
-
150 200
I_DD(PLL)
PLL power consumption on
V_DD(1)
VCO freq = 96 MHz
VCO freq = 192 MHz
-
200 260
μA
-
300 380
VCO freq = 344 MHz
-
520 650
1. Guaranteed by design.
2. Take care of using the appropriate division factor M to obtain the specified PLL input clock values. The M factor is shared
between the 3 PLLs.
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