LPC5411x
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© NXP Semiconductors N.V. 2018. All rights reserved.
Product data sheet
Rev. 2.1 — 9 May 2018
66 of 105
NXP Semiconductors
LPC5411x
32-bit ARM Cortex-M4/M0+ microcontroller
[1]
Data based on characterization results, not tested in production.
[2]
Excluding under- and overshoot which may occur when the PLL is not in lock.
[3]
A phase difference between the inputs of the PFD (clkref and clkfb) smaller than the PFD lock criterion
means lock output is HIGH.
[4]
Actual jitter dependent on amplitude and spectrum of substrate noise.
[5]
Input clock coming from a crystal oscillator with less than 250 ps peak-to-peak period jitter.
11.5 FRO
The FRO is trimmed to
1 % accuracy over the entire voltage and temperature range.
[1]
Tested in production.The values listed are at room temperature (25
C).
[2]
Data based on characterization results, not tested in production.
11.6 RTC oscillator
See
Section 13.5
for connecting the RTC oscillator to an external clock source.
[1]
Parameters are valid over operating temperature range unless otherwise specified.
Table 25.
Dynamic characteristics of the PLL
T
amb
=
40
C to +105
C. V
DD
= 1.62 V to 3.6 V.
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
Reference clock input
F
in
input frequency
-
32.768 kHz
-
25 MHz
-
Clock output
f
o
output frequency
for PLL clkout output
1.2
-
150
MHz
d
o
output duty cycle
for PLL clkout output
46
-
54
%
f
CCO
CCO
frequency
-
-
-
150
MHz
Lock detector output
lock(PFD)
PFD lock criterion
-
1
2
4
ns
Dynamic parameters at f
out
= f
CCO
= 100 MHz; standard bandwidth settings
J
rms-interval
RMS interval jitter
f
ref
= 10 MHz
-
15
30
ps
J
pp-period
peak-to-peak, period jitter
f
ref
= 10 MHz
-
40 80
ps
Table 26.
Dynamic characteristic: FRO
T
amb
=
40
C to +105
C; 1.62 V
V
DD
3.6 V
Symbol
Parameter
Typ
Unit
f
osc(FRO)
FRO clock frequency
11.88
12
12.12
MHz
f
osc(FRO)
FRO clock frequency
47.52
48
48.48
MHz
f
osc(FRO)
FRO clock frequency
95.04
96
96.96
MHz
Table 27.
Dynamic characteristic: RTC oscillator
T
amb
=
40
C to +105
C; 1.62 V
V
DD
3.6 V
Symbol
Parameter
Min
Typ
Max
Unit
f
i
input frequency
-
32.768
-
kHz