LPC2367FBD100 NXP Semiconductors, LPC2367FBD100 Datasheet - Page 56

• Manufacturer Part Number: LPC2367FBD100
• Description: The LPC2367FBD100 is a ARM7 microcontroller for embedded applications featuring a high level of integration and low power consumption at frequencies of 72 MHz
• Manufacturer: NXP Semiconductors

NXP Semiconductors
LPC2364_65_66_67_68
Product data sheet
Fig 19. LPC2364/66/68 USB interface on a bus-powered device
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
capacitor to ground C
slave mode, a minimum of 200 mV (RMS) is needed.
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 XTAL2 pin in this configuration can be left unconnected.
External components and models used in oscillation mode are shown in
Table 16
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.
Fig 20. Slave mode operation of the on-chip oscillator
i
S
= 100 pF. To limit the input voltage to the specified range, choose an additional
). Capacitance C
LPC23XX
20), with an amplitude between 200 mV (RMS) and 1000 mV (RMS). This
and
Table
All information provided in this document is subject to legal disclaimers.
P
17. Since the feedback resistance is integrated on chip, only a crystal
in
V
USB_UP_LED
V
USB_D+
USB_D−
V
g
Rev. 7 — 20 October 2011
DD(3V3)
BUS
SS
which attenuates the input voltage by a factor C
Figure 21
X1
and C
R S = 33 Ω
R S = 33 Ω
R2
X2
represents the parallel package capacitance and should
need to be connected externally in case of
R1
1.5 kΩ
OSC
XTAL1
C i
100 pF
LPC2xxx
, C
L
, R
LPC2364/65/66/67/68
Single-chip 16-bit/32-bit microcontrollers
S
002aae718
C g
and C
002aac579
P
are supplied by the crystal
USB-B
connector
i
© NXP B.V. 2011. All rights reserved.
/ (C
Figure 21
i
+ C
g
L
). In
and
and in
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