lpc1114fn28/102 NXP Semiconductors, lpc1114fn28/102 Datasheet - Page 63
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lpc1114fn28/102
Manufacturer Part Number
lpc1114fn28/102
Description
32-bit Arm Cortex-m0 Microcontroller; Up To 32 Kb Flash And 8 Kb Sram
Manufacturer
NXP Semiconductors
Datasheet
1.LPC1114FN28102.pdf
(84 pages)
- Current page: 63 of 84
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NXP Semiconductors
LPC1110_11_12_13_14
Product data sheet
11.3 XTAL Printed Circuit Board (PCB) layout guidelines
Table 22.
Table 23.
The crystal should be connected on the PCB as close as possible to the oscillator input
and output pins of the chip. Take care that the load capacitors C
of third overtone crystal usage have a common ground plane. The external components
must also be connected to the ground plain. Loops must be made as small as possible in
Fundamental oscillation
frequency F
5 MHz - 10 MHz
10 MHz - 15 MHz
15 MHz - 20 MHz
Fundamental oscillation
frequency F
15 MHz - 20 MHz
20 MHz - 25 MHz
1 MHz - 5 MHz
Fig 35. Oscillator modes and models: oscillation mode of operation and external crystal
model used for C
Recommended values for C
components parameters) low frequency mode
Recommended values for C
components parameters) high frequency mode
OSC
OSC
All information provided in this document is subject to legal disclaimers.
XTALIN
C X1
LPC1xxx
Rev. 6 — 2 November 2011
XTAL
X1
Crystal load
capacitance C
10 pF
20 pF
30 pF
10 pF
20 pF
30 pF
10 pF
20 pF
10 pF
Crystal load
capacitance C
10 pF
20 pF
10 pF
20 pF
/C
X2
XTALOUT
evaluation
C X2
X1
X1
/C
/C
L
L
X2
X2
in oscillation mode (crystal and external
in oscillation mode (crystal and external
Maximum crystal
series resistance R
< 300
< 300
< 300
< 300
< 200
< 100
< 160
< 60
< 80
Maximum crystal
series resistance R
< 180
< 100
< 160
< 80
LPC1110/11/12/13/14
32-bit ARM Cortex-M0 microcontroller
=
S
S
X1
L
C L
R S
, C
External load
capacitors C
18 pF, 18 pF
39 pF, 39 pF
57 pF, 57 pF
18 pF, 18 pF
39 pF, 39 pF
57 pF, 57 pF
18 pF, 18 pF
39 pF, 39 pF
18 pF, 18 pF
External load
capacitors C
18 pF, 18 pF
39 pF, 39 pF
18 pF, 18 pF
39 pF, 39 pF
002aaf424
X2
, and C
© NXP B.V. 2011. All rights reserved.
C P
X3
X1
X1
in case
, C
, C
63 of 84
X2
X2
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