LPC2103 datasheet(30/37 Pages) NXP

Part #	LPC2103

Description	Single-chip 16-bit/32-bit microcontrollers; 8 kB/16 kB/32 kB flash with ISP/IAP, fast ports and 10-bit ADC

PDF	37 Pages

Scroll/Zoom	100%

Manufacturer	NXP [NXP Semiconductors]

Direct Link	http://www.nxp.com

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30 / 37 page

LPC2101_02_03_4

Product data sheet

Rev. 04 — 2 June 2009

30 of 37

NXP Semiconductors

LPC2101/02/03

Single-chip 16-bit/32-bit microcontrollers

10.2 XTAL and RTC Printed Circuit Board (PCB) layout guidelines

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 Cx1 and Cx2, and Cx3 in

case 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 order to keep the noise coupled in via the PCB as small as possible. Also

parasitics should stay as small as possible. Values of Cx1 and Cx2 should be chosen

smaller accordingly to the increase in parasitics of the PCB layout.

LPC2103 Datasheet(PDF) 30 Page - NXP Semiconductors