UM10462
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© NXP B.V. 2016. All rights reserved.
User manual
Rev. 5.5 — 21 December 2016
144 of 523
NXP Semiconductors
UM10462
Chapter 8: LPC11U3x/2x/1x Pin configuration
PIO1_21/DCD/MISO1
-
26
35
I; PU
I/O
PIO1_21 —
General purpose digital input/output pin.
-
I
DCD —
Data Carrier Detect input for USART.
-
I/O
MISO1 —
Master In Slave Out for SSP1.
PIO1_22/RI/MOSI1
-
38
51
I; PU
I/O
PIO1_22 —
General purpose digital input/output pin.
-
I
RI —
Ring Indicator input for USART.
-
I/O
MOSI1 —
Master Out Slave In for SSP1.
PIO1_23/CT16B1_MAT1/
SSEL1
-
18
24
I; PU
I/O
PIO1_23 —
General purpose digital input/output pin.
-
O
CT16B1_MAT1 —
Match output 1 for 16-bit timer 1.
-
I/O
SSEL1 —
Slave select for SSP1.
PIO1_24/CT32B0_MAT0
-
21
27
I; PU
I/O
PIO1_24 —
General purpose digital input/output pin.
-
O
CT32B0_MAT0 —
Match output 0 for 32-bit timer 0.
PIO1_25/CT32B0_MAT1
-
1
2
I; PU
I/O
PIO1_25 —
General purpose digital input/output pin.
-
O
CT32B0_MAT1 —
Match output 1 for 32-bit timer 0.
PIO1_26/CT32B0_MAT2/
RXD
-
11
14
I; PU
I/O
PIO1_26 —
General purpose digital input/output pin.
-
O
CT32B0_MAT2 —
Match output 2 for 32-bit timer 0.
-
I
RXD —
Receiver input for USART.
PIO1_27/CT32B0_MAT3/
TXD
-
12
15
I; PU
I/O
PIO1_27 —
General purpose digital input/output pin.
-
O
CT32B0_MAT3 —
Match output 3 for 32-bit timer 0.
-
O
TXD —
Transmitter output for USART.
PIO1_28/CT32B0_CAP0/
SCLK
-
24
31
I; PU
I/O
PIO1_28 —
General purpose digital input/output pin.
-
I
CT32B0_CAP0 —
Capture input 0 for 32-bit timer 0.
-
I/O
SCLK —
Serial clock input/output for USART in
synchronous mode.
PIO1_29/SCK0/
CT32B0_CAP1
-
31
41
I; PU
I/O
PIO1_29 —
General purpose digital input/output pin.
-
I/O
SCK0 —
Serial clock for SSP0.
-
I
CT32B0_CAP1 —
Capture input 1 for 32-bit timer 0.
PIO1_31
-
25
-
I; PU
I/O
PIO1_31 —
General purpose digital input/output pin.
USB_DM
13
19
25
F
-
USB_DM —
USB bidirectional D
line.
USB_DP
14
20
26
F
-
USB_DP —
USB bidirectional D+ line.
XTALIN
4
6
8
-
-
Input to the oscillator circuit and internal clock generator
circuits. Input voltage must not exceed 1.8 V.
XTALOUT
5
7
9
-
-
Output from the oscillator amplifier.
V
DD
6;
29
8;
44
10;
33;
48;
58
-
-
Supply voltage to the internal regulator, the external rail,
and the ADC. Also used as the ADC reference voltage.
V
SS
33
5;
41
7;
54
-
-
Ground.
Table 134. LPC11U2x pin description
…continued
Symbol
Pin HVQFN33
Pin LQ
FP4
8
Pin LQ
FP6
4
Reset
state
[1]
Type
Description