LPC1857_53 NXP Semiconductors, LPC1857_53 Datasheet - Page 118

• Manufacturer Part Number: LPC1857_53
• Description: The LPC1857/53 are ARM Cortex-M3 based microcontrollers for embedded applications
• Manufacturer: NXP Semiconductors

NXP Semiconductors
LPC1857_53
Objective data sheet
13.3 XTAL and RTCX Printed Circuit Board (PCB) layout guidelines
Connect the crystal on the PCB as close as possible to the oscillator input and output pins
of the chip. Take care that the load capacitors C
crystal usage have a common ground plane. Also connect the external components to the
ground plain. To keep the noise coupled in via the PCB as small as possible, make loops
and parasitics as small as possible. Choose values of C
increase in the PCB layout.
All information provided in this document is subject to legal disclaimers.
Rev. 1 — 14 December 2011
X1
32-bit ARM Cortex-M3 microcontroller
, C
X2
, and C
X1
and C
X3
LPC1857/53
X2
in case of third overtone
smaller if parasitics
© NXP B.V. 2011. All rights reserved.
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