Datasheet

LPC11E1X All information provided in this document is subject to legal disclaimers. © NXP B.V. 2013. All rights reserved.
Product data sheet Rev. 1.1 — 24 September 2013 12 of 62
NXP Semiconductors
LPC11E1x
32-bit ARM Cortex-M0 microcontroller
[1] Pin state at reset for default function: I = Input; O = Output; PU = internal pull-up enabled; IA = inactive, no pull-up/down enabled;
F = floating; If the pins are not used, tie floating pins to ground or power to minimize power consumption.
[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. See Figure 28
for the
reset pad configuration.
[3] 5 V tolerant pad providing digital I/O functions with configurable pull-up/pull-down resistors and configurable hysteresis (see Figure 27
).
[4] I
2
C-bus pins compliant with the I
2
C-bus specification for I
2
C standard mode, I
2
C Fast-mode, and I
2
C Fast-mode Plus.
[5] 5 V tolerant pad providing digital I/O functions with configurable pull-up/pull-down resistors and configurable hysteresis (see Figure 27
);
includes high-current output driver.
PIO1_23/CT16B1_MAT1/
SSEL1
13 18 24
[3]
I; PU I/O PIO1_23 — General purpose digital input/output pin.
-OCT16B1_MAT1 — Match output 1 for 16-bit timer 1.
-I/OSSEL1 — Slave select for SSP1.
PIO1_24/CT32B0_MAT0 14 21 27
[3]
I; PU I/O PIO1_24 — General purpose digital input/output pin.
-OCT32B0_MAT0 — Match output 0 for 32-bit timer 0.
PIO1_25/CT32B0_MAT1 - 1 2
[3]
I; PU I/O PIO1_25 — General purpose digital input/output pin.
-OCT32B0_MAT1 — Match output 1 for 32-bit timer 0.
PIO1_26/CT32B0_MAT2/
RXD
-1114
[3]
I; PU I/O PIO1_26 — General purpose digital input/output pin.
-OCT32B0_MAT2 — Match output 2 for 32-bit timer 0.
-IRXD — Receiver input for USART.
PIO1_27/CT32B0_MAT3/
TXD
-1215
[3]
I; PU I/O PIO1_27 — General purpose digital input/output pin.
-OCT32B0_MAT3 — Match output 3 for 32-bit timer 0.
-OTXD — Transmitter output for USART.
PIO1_28/CT32B0_CAP0/
SCLK
-2431
[3]
I; PU I/O PIO1_28 — General purpose digital input/output pin.
-ICT32B0_CAP0 — Capture input 0 for 32-bit timer 0.
-I/OSCLK — Serial clock input/output for USART in
synchronous mode.
PIO1_29/SCK0/
CT32B0_CAP1
-3141
[3]
I; PU I/O PIO1_29 — General purpose digital input/output pin.
-I/OSCK0 — Serial clock for SSP0.
-ICT32B0_CAP1 — Capture input 1 for 32-bit timer 0.
PIO1_31 - 25 -
[3]
I; PU I/O PIO1_31 — General purpose digital input/output pin.
n.c. - 19 25 F - Not connected.
n.c. - 20 26 F - Not connected.
XTALIN 4 6 8
[7]
- - Input to the oscillator circuit and internal clock generator
circuits. Input voltage must not exceed 1.8 V.
XTALOUT 5 7 9
[7]
- - 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 3. Pin description
Symbol
HVQFN33 LQFP48 LQFP64
Reset
state
[1]
Type Description