Datasheet

LPC11U6x All information provided in this document is subject to legal disclaimers. © NXP Semiconductors N.V. 2014. All rights reserved.
Product data sheet Rev. 1.2 — 26 May 2014 17 of 96
NXP Semiconductors
LPC11U6x
32-bit ARM Cortex-M0+ microcontroller
PIO2_13 --26
[6]
I; PU IO PIO2_13 — General-purpose digital input/output pin.
I U4_CTS
— Clear To Send input for USART4.
PIO2_14 --27
[6]
I; PU IO PIO2_14 — General-purpose digital input/output pin.
I SCT1_IN2 — SCTimer1/PWM input 2.
PIO2_15 -3249
[6]
I; PU IO PIO2_15 — General-purpose digital input/output pin.
I SCT1_IN3 — SCTimer1/PWM input 3.
PIO2_16 --50
[6]
I; PU IO PIO2_16 — General-purpose digital input/output pin.
O SCT1_OUT0 — SCTimer1/PWM output 0.
PIO2_17 --51
[6]
I; PU IO PIO2_17 — General-purpose digital input/output pin.
O SCT1_OUT1 — SCTimer1/PWM output 1.
PIO2_18 -3352
[6]
I; PU IO PIO2_18 — General-purpose port 2 input/output 18.
O SCT1_OUT2 — SCTimer1/PWM output 2.
PIO2_19 -3657
[6]
I; PU IO PIO2_19 — General-purpose port 2 input/output 19.
O SCT1_OUT3 — SCTimer1/PWM output 3.
PIO2_20 - - 75
[6]
I; PU IO PIO2_20 — General-purpose port 2 input/output 20.
PIO2_21 - - 76
[6]
I; PU IO PIO2_21 — General-purpose port 2 input/output 21.
PIO2_22 - - 77
[6]
I; PU IO PIO2_22 — General-purpose port 2 input/output 22.
PIO2_23 - - 1
[6]
I; PU IO PIO2_23 — General-purpose port 2 input/output 23.
RSTOUT
- - 88
[6]
IA IO Internal reset status output.
USB_DP 20 26 39
[9]
F - USB bidirectional D+ line. Pad includes internal 33  series
termination resistor.
USB_DM 19 25 38
[9]
F - USB bidirectional D line. Pad includes internal 33  series
termination resistor.
RTCXIN 48 1 5
[2]
- - RTC oscillator input. This input should be grounded if the
RTC is not used.
RTCXOUT 1 2 6
[2]
- - RTC oscillator output.
VREFP 34 47 73 - - ADC positive reference voltage. If the ADC is not used, tie
VREFP to V
DD
.
VREFN 35 48 74 - - ADC negative voltage reference. If the ADC is not used, tie
VREFN to V
SS
.
V
DDA
40 53 84 - - Analog voltage supply. V
DDA
should typically be the same
voltages as V
DD
but should be isolated to minimize noise
and error. V
DDA
should be tied to V
DD
if the ADC is not
used.
V
DD
44,
8
58,
10,
34,
59
92,
14,
71,
54,
93
- - Supply voltage to the internal regulator and the external
rail.
Table 3. Pin description
Pin functions are selected through the IOCON registers. See Table 2 for availability of USART3 and USART4 pin functions.
Symbol
LQFP48 LQFP64 LQFP100
Reset
state
[1]
Type Description of pin functions