MPC5645S datasheet(86/146 Pages) FREESCALE

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Qorivva MPC5645S Microcontroller Data Sheet, Rev. 8

Freescale Semiconductor

4.12

FMPLL electrical characteristics

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

external oscillator driver.

Table 39. Slow external crystal oscillator electrical characteristics

Symbol

Parameter

Conditions1

1 V

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

Value2

2 All values need to be confirmed during device validation.

Unit

SpecID

Min

Typ

Max

fXOSCLP

C Oscillator frequency

—

kHz

O10.1

VXOSCLP CC

3 Granted by device validation.

C Oscillation amplitude

VDDA=3.3V10%,

VDDE_A=3.3V10%

1.12

1.33

1.74

O10.2

VDDA=5.0V10%,

VDDE_A=5.0V10%

1.12

1.37

1.74

IXOSCLP CC

D Oscillator consumption

—

µA

O10.3

TXOSCLPS

CC3 D Oscillator start-up time

—

O10.4

VIH

C Input high level CMOS

Schmitt Trigger

Oscillator bypass mode

0.65VDDA

0.65VDDE_A

—VDDA+0.4

VDDE_A+0.4

O10.5

VIL

C Input low level CMOS

Schmitt Trigger

Oscillator bypass mode

VSS–0.4

—

0.35VDDA

0.35VDDE_A

O10.6

Table 40. FMPLL electrical characteristics

Symbol

Parameter

Conditions1

1 V

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

Value2

2 All values need to be confirmed during device validation.

Unit SpecID

Min

Typ

Max

fPLLIN

T PLL reference clock3

3 PLLIN clock retrieved directly from XOSCHS 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.

—

120

MHz O11.1



PLLIN

T PLL reference clock duty cycle3

—

47.5

—

52.5

O11.2

fPLLOUT CC

T PLL output clock frequency

—

2505

MHz O11.3

fCPU

CC4

T System clock frequency

—

1256

MHz O11.4

TLOCK

CC4

T PLL lock time

Stable oscillator (fPLLIN = 10 MHz)

—

100

µs

O11.5

T

PKJIT

CC4

T PLL jitter

fPLLOUT (PHI i.e. FMPLL O/P) =

15.625 MHz @ 10 MHz resonator

–509

—

509

O11.6

T

LTJIT

CC4

T PLL long term jitter

fPLLIN = 10 MHz (resonator)

–2.4

—

2.4

O11.7

IPLL

CC7

D Current Consumption (Normal

Mode for Analog Supply)

TA = 25°C

—

500

µA

O11.8

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