EA-XPR-007 Embedded Artists, EA-XPR-007 Datasheet - Page 53

• Manufacturer Part Number: EA-XPR-007
• Description: BOARD LPCXPRESSO LPC11U14
• Manufacturer: Embedded Artists

Specifications of EA-XPR-007

• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

NXP Semiconductors
LPC11U1X
Objective data sheet
In slave mode the input clock signal should be coupled by means of a capacitor of 100 pF
(Figure
corresponds to a square wave signal with a signal swing of between 280 mV and 1.4 V.
The XTALOUT pin in this configuration can be left unconnected.
External components and models used in oscillation mode are shown in
Table 18
and the capacitances C
fundamental mode oscillation (the fundamental frequency is represented by L, C
R
not be larger than 7 pF. Parameters F
manufacturer.
Table 18.
Fundamental oscillation
frequency F
1 MHz - 5 MHz
Fig 28. Slave mode operation of the on-chip oscillator
Fig 29. Oscillator modes and models: oscillation mode of operation and external crystal
S
). Capacitance C
28), with an amplitude between 200 mV(RMS) and 1000 mV(RMS). This
and
model used for C
Recommended values for C
components parameters) low frequency mode
OSC
Table
All information provided in this document is subject to legal disclaimers.
XTALIN
P
C X1
19. Since the feedback resistance is integrated on chip, only a crystal
LPC1xxx
in
Figure 29
X1
Rev. 1 — 11 April 2011
XTAL
X1
and C
Crystal load
capacitance C
10 pF
20 pF
30 pF
/C
X2
XTALOUT
X2
evaluation
C X2
represents the parallel package capacitance and should
need to be connected externally in case of
OSC
X1
XTALIN
LPC1xxx
C i
100 pF
/C
L
, C
X2
in oscillation mode (crystal and external
L
Maximum crystal
series resistance R
< 300 
< 300 
< 300 
, R
S
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32-bit ARM Cortex-M0 microcontroller
C g
and C
=
P
are supplied by the crystal
S
L
C L
R S
LPC11U1x
External load
capacitors C
18 pF, 18 pF
39 pF, 39 pF
57 pF, 57 pF
002aaf424
© NXP B.V. 2011. All rights reserved.
C P
Figure 29
L
X1
and
, C
and in
53 of 64
X2