LQFP144 datasheet(94/133 Pages) STMICROELECTRONICS

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Electrical characteristics

SPC560B54x/6x

94/133

DocID15131 Rev 9

4.15

Fast internal RC oscillator (16 MHz) electrical characteristics

The device provides a 16 MHz main internal RC oscillator. This is used as the default clock

at the power-up of the device.

Table 41. FMPLL electrical characteristics

Symbol

Parameter

Conditions(1)

Value

Unit

Min

Typ

Max

fPLLIN

SR — FMPLL reference clock(2)

—4

—

MHz



PLLIN

SR —

FMPLL reference clock duty

cycle(2)

—40

—

fPLLOUT CC P FMPLL output clock frequency

—

MHz

fVCO

(3)

VCO frequency without

frequency modulation

—256

—

512

MHz

VCO frequency with frequency

modulation

—

245.76

—

532.48

fCPU

SR — System clock frequency

—

MHz

fFREE

CC P Free-running frequency

—

150

MHz

tLOCK

CC P FMPLL lock time

Stable oscillator (fPLLIN = 16 MHz)

100

µs

t

STJIT

CC — FMPLL short term jitter(4)

fsys maximum

–4

—

t

LTJIT

CC — FMPLL long term jitter

fPLLCLK at 64 MHz, 4000 cycles

—

IPLL

CC C FMPLL consumption

TA = 25 °C

—

VDD = 3.3 V ± 10% / 5.0 V ± 10%, TA = 40 to 125 °C, unless otherwise specified

PLLIN clock retrieved directly from FXOSC clock. Input characteristics are granted when oscillator is used in functional

mode. When bypass mode is used, oscillator input clock should verify fPLLIN and PLLIN.

Frequency modulation is considered ± 4%.

Short term jitter is measured on the clock rising edge at cycle n and n+4.

Table 42. Fast internal RC oscillator (16 MHz) electrical characteristics

Symbol

Parameter

Conditions(1)

Value

Unit

Min

Typ

Max

fFIRC

CC P Fast internal RC oscillator high

frequency

TA = 25 °C, trimmed

—

MHz

SR —

—

IFIRCRUN

(2) CC T

Fast internal RC oscillator high

frequency current in running

mode

TA = 25 °C, trimmed

—

200

µA

IFIRCPWD CC D

Fast internal RC oscillator high

frequency current in power

down mode

TA = 25 °C

—

µA

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