LPC2131_32_34_36_38 NXP Semiconductors, LPC2131_32_34_36_38 Datasheet - Page 37

• Manufacturer Part Number: LPC2131_32_34_36_38
• Description: The LPC2131/32/34/36/38 microcontrollers are based on a 16/32-bit ARM7TDMI-S CPUwith real-time emulation and embedded trace support, that combine the microcontrollerwith 32 kB, 64 kB, 128 kB, 256 kB and 512 kB of embedded high-speed flash memory
• Manufacturer: NXP Semiconductors

NXP Semiconductors
LPC2131_32_34_36_38
Product data sheet
Table 10.
Table 11.
Fundamental oscillation
frequency F
1 MHz to 5 MHz
5 MHz to 10 MHz
15 MHz to 20 MHz
Fundamental oscillation
frequency F
15 MHz to 20 MHz
20 MHz to 25 MHz
10 MHz to 15 MHz
Fig 14. Oscillator modes and models: oscillation mode of operation and external crystal
model used for C
Recommended values for C
components parameters): low frequency mode
Recommended values for C
components parameters): high frequency mode
OSC
OSC
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XTAL1
C X1
LPC2xxx
Rev. 5.1 — 29 July 2011
XTAL
X1
Crystal load
capacitance C
10 pF
20 pF
30 pF
10 pF
20 pF
30 pF
10 pF
20 pF
10 pF
Crystal load
capacitance C
10 pF
20 pF
10 pF
20 pF
/C
X2
XTAL2
evaluation
C X2
X1
X1
/C
/C
L
L
X2
X2
in oscillation mode (crystal and external
in oscillation mode (crystal and external
Maximum crystal
series resistance R
< 300 
< 300 
< 300 
< 300 
< 200 
< 100 
< 160 
< 60 
< 80 
Maximum crystal
series resistance R
< 180 
< 100 
< 160 
< 80 
LPC2131/32/34/36/38
Single-chip 16/32-bit microcontrollers
=
S
S
L
C L
R S
002aag469
External load
capacitors C
18 pF, 18 pF
39 pF, 39 pF
57 pF, 57 pF
18 pF, 18 pF
39 pF, 39 pF
57 pF, 57 pF
18 pF, 18 pF
39 pF, 39 pF
18 pF, 18 pF
External load
capacitors C
18 pF, 18 pF
39 pF, 39 pF
18 pF, 18 pF
39 pF, 39 pF
© NXP B.V. 2011. All rights reserved.
C P
X1
X1
/C
,
37 of 45
CX2
X2