LPC1857_53 NXP Semiconductors, LPC1857_53 Datasheet - Page 117

• 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
Table 27.
Table 28.
Fundamental oscillation
frequency
12 MHz
16 MHz
20 MHz
Fundamental oscillation
frequency
15 MHz
20 MHz
Fig 33. Slave mode operation of the on-chip oscillator
Fig 34. Oscillator modes with external crystal model used for C
Recommended values for C
components parameters) low frequency mode
Recommended values for C
components parameters) high frequency mode
All information provided in this document is subject to legal disclaimers.
XTAL1
C X1
LPC18xx
Rev. 1 — 14 December 2011
XTAL
Maximum crystal series
resistance R
< 80 
< 80 
< 100 
XTAL2
C X2
Maximum crystal series
resistance R
< 160 
< 160 
< 120 
< 80 
< 100 
< 80 
X1/X2
X1/X2
XTAL1
S
LPC1xxx
C i
100 pF
in oscillation mode (crystal and external
in oscillation mode (crystal and external
S
002aae835
32-bit ARM Cortex-M3 microcontroller
C g
=
External load capacitors C
C
18 pF, 18 pF
39 pF, 39 pF
47 pF, 47 pF
x2
External load capacitors
C
18 pF, 18 pF
39 pF, 39 pF
18 pF, 18 pF
33 pF, 33 pF
18 pF, 18 pF
33 pF, 33 pF
X1
LPC1857/53
X1
/C
L
C L
R S
, C
X2
002aag031
X2
evaluation
© NXP B.V. 2011. All rights reserved.
C P
117 of 131
X1
,