Datasheet
UM10398 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2014. All rights reserved.
User manual Rev. 12.3 — 10 June 2014 185 of 547
NXP Semiconductors
UM10398
Chapter 11: LPC111x Pin configuration (LPC1100XL series,
[1] Pin state at reset for default function: I = Input; O = Output; PU = internal pull-up enabled (pins pulled up to full V
DD
level (V
DD
= 3.3 V));
IA = inactive, no pull-up/down enabled.
[2] 5 V tolerant pad. RESET
functionality is not available in Deep power-down mode. Use the WAKEUP pin to reset the chip and wake up
from Deep power-down mode. An external pull-up resistor is required on this pin for the Deep power-down mode.
[3] 5 V tolerant pad providing digital I/O functions with configurable pull-up/pull-down resistors and configurable hysteresis.
[4] I
2
C-bus pads compliant with the I
2
C-bus specification for I
2
C standard mode and I
2
C Fast-mode Plus. The pin requires an external
pull-up to provide output functionality. When power is switched off, this pin is floating and does not disturb the I2C lines. Open-drain
configuration applies to all functions on this pin.
[5] 5 V tolerant pad providing digital I/O functions with configurable pull-up/pull-down resistors, configurable hysteresis, and analog input.
When configured as a ADC input, digital section of the pad is disabled and the pin is not 5 V tolerant.
[6] When the system oscillator is not used, connect XTALIN and XTALOUT as follows: XTALIN can be left floating or can be grounded
(grounding is preferred to reduce susceptibility to noise). XTALOUT should be left floating.
PIO3_2/DCD/
CT16B0_MAT2/
SCK1
43
[3]
A4
[3]
no I/O I; PU PIO3_2 — General purpose digital input/output pin.
I-DCD
— Data Carrier Detect input for UART.
O-CT16B0_MAT2 — Match output 2 for 16-bit timer 0.
I/O - SCK1 — Serial clock for SPI1.
PIO3_3/RI
/
CT16B0_CAP0
48
[3]
A2
[3]
no I/O I; PU PIO3_3 — General purpose digital input/output pin.
I-RI
— Ring Indicator input for UART.
I-CT16B0_CAP0 — Capture input 0 for 16-bit timer 0.
PIO3_4/
CT16B0_CAP1/RXD
18
[3]
H4
[3]
no I/O I; PU PIO3_4 — General purpose digital input/output pin.
I-CT16B0_CAP1 — Capture input 1 for 16-bit timer 0.
I-RXD — Receiver input for UART
PIO3_5/
CT16B1_CAP1/TXD
21
[3]
G6
[3]
no I/O I; PU PIO3_5 — General purpose digital input/output pin.
I-CT16B1_CAP1 — Capture input 1 for 16-bit timer 1.
O-TXD — Transmitter output for UART
V
DD
8; 44 E2;
B4
- I - 3.3 V supply voltage to the internal regulator, the
external rail, and the ADC. Also used as the ADC
reference voltage.
XTALIN 6
[6]
D1
[6]
- I - Input to the oscillator circuit and internal clock
generator circuits. Input voltage must not exceed 1.8 V.
XTALOUT 7
[6]
E1
[6]
- O - Output from the oscillator amplifier.
V
SS
5; 41 D2;
B5
- I - Ground.
Table 170. LPC1100XL series: LPC1113/14/15 pin description table (LQFP48 and TFBGA48 package) …continued
Symbol
LQFP48
TFBGA48
Start
logic
input
Type Reset
state
[1]
Description