LPC5411x
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© NXP Semiconductors N.V. 2018. All rights reserved.
Product data sheet
Rev. 2.1 — 9 May 2018
88 of 105
NXP Semiconductors
LPC5411x
32-bit ARM Cortex-M4/M0+ microcontroller
13.3 Connecting power, clocks, and debug functions
(1) See
for the values of C3 and C4.
(2) Position the decoupling capacitors of 0.1
μ
F and 0.01
μ
F as close as possible to the V
DD
pin. Add one set of decoupling
capacitors to each V
DD
pin.
(3) Position the decoupling capacitors of 0.1
μ
F as close as possible to the VREFN and V
DDA
pins. The 10
μ
F bypass capacitor
filters the power line. Tie V
DDA
and VREFP to V
DD
if the ADC is not used. Tie VREFN to V
SS
if ADC is not used.
(4) Uses the ARM 10-pin interface for SWD.
(5) When measuring signals of low frequency, use a low-pass filter to remove noise and to improve ADC performance. Also see
(6) External pull-up resistors on SWDIO and SWCLK pins are optional because these pins have an internal pull-up enabled by
default.
Fig 32. Power, clock, and debug connections
SWDIO/PIO0_17
SWCLK/PIO0_16
RESETN
V
SS
V
SSA
PIO0_31
ADCx
RTCXIN
RTCXOUT
V
DD
(2 to 4 pins)
V
DDA
VREFP
VREFN
LPC5411x
3.3 V
3.3 V
DGND
DGND
AGND
1
3
5
7
9
2
4
6
8
10
(4)
(5)
DGND
DGND
DGND
C3
C4
(1)
(2)
(3)
(3)
0.01 μF
0.1 μF
3.3 V
DGND
10 μF
0.1 μF
3.3 V
AGND
AGND
AGND
10 μF
0.1 μF
0.1 μF
ISP select pins
n.c.
n.c.
n.c.
SWD connector
aaa-022103
PIO0_4
PIO1_6
3.3 V
~10 kΩ - 100 kΩ
3.3 V
~10 kΩ - 100 kΩ
(6)
(6)