NXP Semiconductors MPC5777M - Page 48

MPC5777M Microcontroller Data Sheet, Rev. 6
Electrical characteristics
NXP Semiconductors48

PLL0LTJ
CC PLL0 output long term jitter
3,4
f
PLL0IN
= 20 MHz (resonator),
VCO frequency = 800 MHz
10 periods
accumulated jitter
(80 MHz equivalent
frequency), 6-sigma
pk-pk
——±250ps
16 periods
accumulated jitter
(50 MHz equivalent
frequency), 6-sigma
pk-pk
——±300ps
long term jitter
(< 1 MHz equivalent
frequency), 6-sigma
pk-pk)
——±500ps
I
PLL0
CC PLL0 consumption FINE LOCK state — — 5 mA
1
f
PLL0IN
frequency must be scaled down using PLLDIG_PLL0DV[PREDIV] to ensure PFD input signal is in the range 8
MHz–20 MHz.
2
PLL0IN clock retrieved directly from either internal RCOSC or external XOSC clock. Input characteristics are granted when
using internal RCOSC or external oscillator is used in functional mode.
3
PLL jitter is guaranteed when transient currents on the V
DDLV
supply are within the I
SPIKE
parameter value in Table 10 (DC
electrical specifications).
4
Noise on the V
DD_LV
supply with frequency content below 40 KHz and above 50 MHz is filtered by the PLL. Noise on the
V
DD_LV
supply with frequency content in the range of 40 KHz – 50 MHz must be filtered externally to the device.
Table 22. PLL1 electrical characteristics
Symbol Parameter Conditions
Value
Unit
Min Typ Max
f
PLL1IN
SR PLL1 input clock
1
1
PLL1IN clock retrieved directly from either internal PLL0 or external XOSC clock. Input characteristics are granted when
using internal PLL0 or external oscillator is used in functional mode.
—38—78MHz

PLL1IN
SR PLL1 input clock duty cycle
1
—35—65%
f
PLL1VCO
CC PLL1 VCO frequency — 600 — 1250 MHz
f
PLL1VCOFR
CC PLL1 VCO free running
frequency
— 35 — 400 MHz
f
PLL1PHI
CC PLL1 output clock PHI — 4.762 — 600 MHz
t
PLL1LOCK
CC PLL1 lock time — — — 100 µs
f
PLL1MOD
CC PLL1 modulation frequency — — — 250 kHz

PLL1MOD
| CC PLL1 modulation depth (when
enabled)
Center spread 0.25 — 2 %
Down spread 0.5 — 4 %
I
PLL1
CC PLL1 consumption FINE LOCK state — — 6 mA
Table 21. PLL0 electrical characteristics (continued)
Symbol Parameter Conditions
Value
Unit
Min Typ Max