UM10462 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2016. All rights reserved.
User manual Rev. 5.5 — 21 December 2016 7 of 523
NXP Semiconductors
UM10462
Chapter 1: LPC11U3x/2x/1x Introductory information
LPC11U3x: up to 12 kB (8 kB main SRAM0, 2 kB SRAM1, 2 kB USB SRAM).
– 16 kB boot ROM.
– LPC11U2x/3x only: Up to 4 kB on-chip EEPROM data memory; byte erasable and
byte programmable; on-chip API support.
• ROM based drivers:
– Power profiles.
– 32-bit integer division routines.
– LPC11U2x/3x only: ROM-based USB drivers. Flash updates via USB supported.
Supports Human-Interface Device (HID) class, Mass Storage Device Class (MSC),
and Communication Device Class (CDC).
– LPC11U2x/3x only: IAP EEPROM drivers.
• Debug options:
– Standard JTAG test interface for BSDL.
– Serial Wire Debug.
• Digital peripherals:
– Up to 54 General Purpose I/O (GPIO) pins with configurable pull-up/pull-down
resistors, repeater mode, and open-drain mode.
– Up to eight GPIO pins can be selected as edge and level sensitive interrupt
sources.
– Two GPIO grouped interrupt modules enables 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 8 capture inputs and 13 match
outputs.
– Programmable windowed WatchDog Timer (WDT) with a dedicated, internal
low-power WatchDog Oscillator (WDO).
• Analog peripherals:
– 10-bit ADC with input multiplexing among eight pins.
• I/O Handler for hardware emulation of serial interfaces, DMA, and other functionality;
supported through software libraries. (LPC11U37HFBD64/401 only.)
• 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 interfaces 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).
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