LQFP100 datasheet(78/116 Pages) STMICROELECTRONICS

78 / 116 page

Package pinouts and signal descriptions

SPC560B40x/50x, SPC560C40x/50x

78/116

DocID14619 Rev 13

3.24

Fast internal RC oscillator (16 MHz) electrical characteristics

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

the power-up of the device.

fVCO

(3)

VCO frequency without

frequency modulation

—256

—

512

MHz

VCO frequency with frequency

modulation

—245

—

533

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

fPLLIN = 16 MHz (resonator),

fPLLCLK @ 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 41. FMPLL electrical characteristics (continued)

Symbol

Parameter

Conditions(1)

Value

Unit

Min

Typ

Max

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 = 125 °C

—

µA

IFIRCSTOP CC T

Fast internal RC oscillator high

frequency and system clock current

in stop mode

TA = 25 °C

sysclk = off

—

500

—

µA

sysclk = 2 MHz

—

600

—

sysclk = 4 MHz

—

700

—

sysclk = 8 MHz

—

900

—

sysclk = 16 MHz

—

1250

—

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