The LPC1759 is a Cortex-M3 microcontroller for embedded applications featuring a high level of integration and low power consumption at frequencies of 120 MHz

LPC1759FBD80

Manufacturer Part NumberLPC1759FBD80
DescriptionThe LPC1759 is a Cortex-M3 microcontroller for embedded applications featuring a high level of integration and low power consumption at frequencies of 120 MHz
ManufacturerNXP Semiconductors
LPC1759FBD80 datasheet
 


1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
Page 61
62
Page 62
63
Page 63
64
Page 64
65
Page 65
66
Page 66
67
Page 67
68
Page 68
69
Page 69
70
Page 70
71
72
73
74
Page 64/74

Download datasheet (2Mb)Embed
PrevNext
NXP Semiconductors
USB_UP_LED
USB_CONNECT
LPC17xx
USB_D+
USB_D−
V
BUS
Fig 31. LPC1759/58/56/54/52/51 USB device port configuration
14.2 Crystal oscillator XTAL input and component selection
The input voltage to the on-chip oscillators is limited to 1.8 V. If the oscillator is driven by a
clock in slave mode, it is recommended that the input be coupled through a capacitor with
C
= 100 pF. To limit the input voltage to the specified range, choose an additional
i
capacitor to ground C
mode, a minimum of 200 mV(RMS) is needed.
Fig 32. Slave mode operation of the on-chip oscillator
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 21
and the capacitances C
fundamental mode oscillation (the fundamental frequency is represented by L, C
R
). Capacitance C
S
not be larger than 7 pF. Parameters F
manufacturer.
LPC1759_58_56_54_52_51
Product data sheet
V
DD
V
DD
33 Ω
33 Ω
which attenuates the input voltage by a factor C
g
32), with an amplitude between 200 mV(RMS) and 1000 mV(RMS). This
and
Table
22. Since the feedback resistance is integrated on chip, only a crystal
and C
need to be connected externally in case of
X1
X2
in
Figure 33
represents the parallel package capacitance and should
P
All information provided in this document is subject to legal disclaimers.
Rev. 7 — 29 March 2011
LPC1759/58/56/54/52/51
32-bit ARM Cortex-M3 microcontroller
V
SS
D+
D−
V
BUS
LPC1xxx
XTAL1
C i
C g
100 pF
002aae835
, C
, R
and C
are supplied by the crystal
OSC
L
S
P
USB-B
connector
002aad943
/(C
+ C
). In slave
i
i
g
Figure 33
and in
and
L
© NXP B.V. 2011. All rights reserved.
64 of 74