Datasheet
LPC1315_16_17_45_46_47 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2012. All rights reserved.
Product data sheet Rev. 3 — 20 September 2012 65 of 77
NXP Semiconductors
LPC1315/16/17/45/46/47
32-bit ARM Cortex-M3 microcontroller
12.5 Reset pad configuration
12.6 ADC usage notes
The following guidelines show how to increase the performance of the ADC in a noisy
environment beyond the ADC specifications listed in Table 17
:
• The ADC input trace must be short and as close as possible to the
LPC1315/16/17/45/46/47 chip.
• The ADC input traces must be shielded from fast switching digital signals and noisy
power supply lines.
• Because the ADC and the digital core share the same power supply, the power supply
line must be adequately filtered.
• To improve the ADC performance in a very noisy environment, put the device in Sleep
mode during the ADC conversion.
Remark: On the LQFP64 package, the analog power supply and the reference voltage
can be connected on separate pins for better noise immunity.
Fig 33. Reset pad configuration
V
SS
reset
002aaf274
V
DD
V
DD
V
DD
R
pu
ESD
ESD
20 ns RC
GLITCH FILTER
PIN