Datasheet

LPC11E6X 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 — 21 May 2014 8 of 89
NXP Semiconductors
LPC11E6x
32-bit ARM Cortex-M0+ microcontroller
7.2 Pin description
Table 3. Pin description
Pin functions are selected through the IOCON registers. See Table 2 for availability of USART4 pin functions.
Symbol
LQFP48 LQFP64 LQFP100
Reset
state
[1]
Type Description of pin functions
RESET/PIO0_0 348
[8]
I; PU I RESET — External reset input with 20 ns glitch filter. A
LOW-going pulse as short as 50 ns on this pin resets the
device, causing I/O ports and peripherals to take on their
default states, and processor execution to begin at address
0. This pin also serves as the debug select input. LOW
level selects the JTAG boundary scan. HIGH level selects
the ARM SWD debug mode.
In deep power-down mode, this pin must be pulled HIGH
externally. The RESET
pin can be left unconnected or be
used as a GPIO pin if an external RESET function is not
needed and Deep power-down is not used.
IO PIO0_0 — General-purpose digital input/output pin.
PIO0_1 459
[6]
I; PU IO PIO0_1 — General-purpose digital input/output pin. A
LOW level on this pin during reset starts the ISP command
handler.
O CLKOUT — Clockout pin.
O CT32B0_MAT2 — Match output 2 for 32-bit timer 0.
PIO0_2 11 14 19
[6]
I; PU IO PIO0_2 — General-purpose port 0 input/output 2.
IO SSP0_SSEL — Slave select for SSP0.
I CT16B0_CAP0 — Capture input 0 for 16-bit timer 0.
- R_0 — Reserved.
PIO0_3 14 19 30
[6]
I; PU IO PIO0_3 — General-purpose digital input/output pin.
- R — Reserved.
R_1 — Reserved.
PIO0_4 15 20 31
[7]
IA IO PIO0_4 — General-purpose port 0 input/output 4
(open-drain).
IO I2C0_SCL — I
2
C-bus clock input/output (open-drain).
High-current sink only if I
2
C Fast-mode Plus is selected in
the I/O configuration register.
- R_2 — Reserved.
PIO0_5 16 21 32
[7]
IA IO PIO0_5 — General-purpose port 0 input/output 5
(open-drain).
IO I2C0_SDA — I
2
C-bus data input/output (open-drain).
High-current sink only if I
2
C Fast-mode Plus is selected in
the I/O configuration register.
- R_3 — Reserved.
PIO0_6 23 29 44
[6]
I; PU IO PIO0_6 — General-purpose port 0 input/output 6.
- R — Reserved.
IO SSP0_SCK — Serial clock for SSP0.
- R_4 — Reserved.