Datasheet

LPC11U1X All information provided in this document is subject to legal disclaimers. © NXP Semiconductors N.V. 2014. All rights reserved.
Product data sheet Rev. 2.2 — 11 March 2014 2 of 72
NXP Semiconductors
LPC11U1x
32-bit ARM Cortex-M0 microcontroller
 Up to 40 General Purpose I/O (GPIO) pins with configurable pull-up/pull-down
resistors, repeater mode, input inverter, and open-drain mode. Eight pins support a
programmable glitch filter.
 Up to 8 GPIO pins can be selected as edge and level sensitive interrupt sources.
 Two GPIO grouped interrupt modules enable an interrupt based on a
programmable pattern of input states of a group of GPIO pins.
 High-current source output driver (20 mA) on one pin (P0_7).
 High-current sink driver (20 mA) on true open-drain pins (P0_4 and P0_5).
 Four general purpose counter/timers with a total of up to 5 capture inputs and 13
match outputs.
 Programmable Windowed WatchDog Timer (WWDT) with a dedicated, internal
low-power WatchDog Oscillator (WDO).
 Analog peripherals:
 10-bit ADC with input multiplexing among eight pins.
 Serial interfaces:
 USB 2.0 full-speed device controller.
 USART with fractional baud rate generation, internal FIFO, a full modem control
handshake interface, and support for RS-485/9-bit mode and synchronous mode.
USART supports an asynchronous smart card interface (ISO 7816-3).
 Two SSP controllers with FIFO and multi-protocol capabilities.
 I
2
C-bus interface supporting the full I
2
C-bus specification and Fast-mode Plus with
a data rate of up to 1 Mbit/s with multiple address recognition and monitor mode.
 Clock generation:
 Crystal Oscillator with an operating range of 1 MHz to 25 MHz (system oscillator).
 12 MHz high-frequency Internal RC oscillator (IRC) that can optionally be used as
a system clock.
 Internal low-power, low-frequency WatchDog Oscillator (WDO) with programmable
frequency output.
 PLL allows CPU operation up to the maximum CPU rate with the system oscillator
or the IRC as clock sources.
 A second, dedicated PLL is provided for USB.
 Clock output function with divider that can reflect the crystal oscillator, the main
clock, the IRC, or the watchdog oscillator.
 Power control:
 Four reduced power modes: Sleep, Deep-sleep, Power-down, and Deep
power-down.
 Power profiles residing in boot ROM allow optimized performance and minimized
power consumption for any given application through one simple function call.
 Processor wake-up from Deep-sleep and Power-down modes via reset, selectable
GPIO pins, watchdog interrupt, or USB port activity.
 Processor wake-up from Deep power-down mode using one special function pin.
 Integrated PMU (Power Management Unit) to minimize power consumption during
Sleep, Deep-sleep, Power-down, and Deep power-down modes.
 Power-On Reset (POR).
 Brownout detect with four separate thresholds for interrupt and forced reset.
 Unique device serial number for identification.
 Single 3.3 V power supply (1.8 V to 3.6 V).