PXD10 datasheet(91/130 Pages) FREESCALE

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Electrical characteristics

PXD10 Microcontroller Data Sheet, Rev. 1

Freescale Semiconductor

3.13

FMPLL electrical characteristics

The device provides a frequency-modulated phase-locked loop (FMPLL) module to generate a fast system

clock from the main oscillator driver.

Table 41. Slow external crystal oscillator (32 KHz) electrical characteristics

Symbol

Parameter

Conditions1

NOTES:

1 V

DD = 3.3 V ± 10% / 5.0 V ± 10%, TA = 40 to 105 °C, unless otherwise specified

Value

Unit

Min

Typ

Max

fSXOSC

SR T Slow external crystal oscillator

frequency

—

kHz

VSXOSC

CC T Oscillation amplitude

VDD = 3.3 V ± 10%

1.12

1.33

1.74

TVDD = 5.0 V ± 10%

1.12

1.37

1.74

ISXOSC

CC D Slow external crystal oscillator

consumption

——

—

µA

TSXOSCSU CC T Slow external crystal oscillator

start-up time

——

—

2 The quoted figure is based on a board that is properly laid out and has no stray capacitances.

VIH

SR D Input high level CMOS Schmitt

Trigger

Oscillator bypass mode

0.65VDD

—VDD + 0.4

VIL

SR D Input low level CMOS Schmitt

Trigger

Oscillator bypass mode

0.4

—

0.35VDD

Table 42. FMPLL electrical characteristics

Symbol

Parameter

Conditions1

NOTES:

1 V

DDPLL = 1.2 V ± 10%, TA = 40 to 105 °C, unless otherwise specified.

Value

Unit

Min

Typ

Max

fPLLIN

SR T FMPLL reference clock2

2 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.

—4

—

MHz



PLLIN

SR T FMPLL reference clock duty cycle2 —40

—

fPLLOUT CC T FMPLL output clock frequency

—

MHz

fCPU

CC T System clock frequency

—

643

3 f

CPU 64 MHz can be achieved only at temperatures up to TA = 105 °C with a maximum FM depth of 2%.

MHz

tLOCK

CC T FMPLL lock time

Stable oscillator (fPLLIN = 16 MHz)

—

200

µs

t

PKJIT

CC T FMPLL jitter (peak to peak)

fPLLIN = 16 MHz (resonator)

—

220

t

LTJIT

CC T FMPLL long term jitter

fPLLIN = 16 MHz (resonator)

—

1.5

IPLL

CC D FMPLL consumption

TA = 25 °C

—

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