Scalable, Entry-Level 32-bit Microcontrollers (MCUs) | NXP Semiconductors

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Scalable, Entry-Level 32-bit Microcontrollers (MCUs)

LPC11AXX Active

The LPC11Axx MCU family is an Arm® Cortex®-M0 based low-cost 32-bit MCU family operating at CPU frequencies of up to 50 MHz. The LPC11Cxx MCU family is designed for 8/16-bit microcontroller operations, offering performance, low power, simple instruction set with reduced code size.

Analog/mixed-signal subsystems can be configured by software from interconnected digital and analog peripherals. The digital peripherals of the LPC11Axx MCU family includes up to 32 KB of flash memory, up to 8 KB of SRAM data memory, up to 4 KB of EEPROM data memory, a fast-mode Plus I2C-bus interface, a RS-485/EIA-485 USART, 2 SSP controllers, 4 general purpose counters/timers, and up to 42 general purpose I/O pins. In addition, the analog peripherals include a 1-bit ADC, a 10-bit DAC, an analog comparator, a temperature sensor, an internal voltage reference and under-voltage lockout (UVLO) protection.

Product Details

Features

System

  • Arm Cortex-M0 or Arm Cortex-M0+ processor, running at frequencies of up to 50 MHz
  • Arm Cortex-M0 or Arm Cortex-M0+ built-in nested vectored interrupt controller (NVIC)
  • Serial wire debug (SWD) and JTAG boundary scan modes supported
  • System tick timer

Memory

  • Up to 32 KB on-chip flash programming memory
  • Up to 4 KB on-chip EEPROM data memory; byte erasable and byte programmable
  • Up to 8 KB SRAM data memory
  • 16 KB boot ROM
  • In-System programming (ISP) and In-application programming (IAP) for flash and EEPROM via on-chip bootloader software
  • Includes ROM-based 32-bit integer division and I2C-bus driver routines

Digital peripherals

  • Up to 42 General Purpose I/O (GPIO) pins with configurable pull-up/pull-down resistors, repeater mode, and open-drain mode
  • Up to 16 pins are configurable with a digital input glitch filter for removing glitches with widths of 10ns or less and two pins are configurable for 50ns glitch filters
  • GPIO pins can be used as edge and level sensitive interrupt sources
  • High-current output driver (20 mA) on one pin
  • High-current sink drivers (20 mA) on two open-drain pins
  • Four general purpose counter/timers with a total of 16 capture inputs and 14 match outputs.
  • Programmable windowed watchdog timer (WWDT) with a dedicated, internal low-power watchdog oscillator (WDOsc)

Analog peripherals

  • 10-bit ADC with input multiplexing among 8 pins
  • 10-bit DAC with flexible conversion triggering
  • Highly flexible analog comparator with a programmable voltage reference
  • Integrated temperature sensor
  • Internal voltage reference
  • Undervoltage lockout (UVLO) protection against power-supply droop below 2.4V

Serial interfaces

  • USART with fractional baud rate generation, internal FIFO, and support for RS-485/9-bi mode and synchronous mode
  • Two SSP controllers with FIFO and multi-protocol capabilities. Support data rates of up to 25 Mbit/s
  • I2C-bus interface supporting the full I2C-bus specification and fast-mode plus with a data rate of 1 Mbit/s with multiple address recognition and monitor mode

Clock generation

  • Crystal oscillator with an operating range of 1 MHz to 25 MHz
  • 12 MHz internal RC oscillator (IRC) trimmed to 1 % accuracy that can optionally be used as a system clock
  • Internal low-power, low-frequency oscillator (LFOsc) with programmable frequency output
  • Clock input for external system clock (25 MHz typical)
  • PLL allows CPU operation up to the maximum CPU rate with the IRC, the external clock or the SysOsc as clock sources
  • Clock output function with divider that can reflect the SysOsc, IRC, the main clock, or the LFOsc

Power control

  • Supports on reduced power mode: the Arm Sleep mode
  • Power profiles residing in boot ROM allowing to optimize performance and minimize power consumption for any given application through one simple function call
  • Processor wake-up from reduced power mode using any interrupt
  • Power-on reset (POR).
  • Brownout detect (BOD) with two programmable thresholds for interrupt and one hardware controlled reset trip point
  • POR and BOD are always enabled for rapid UVLO protection against power supply voltage droop below 2.4

Additional features

  • Unique device serial number for identification
  • Single 3.3 V power supply (2.6 V to 3.6 V)
  • Available as LQFP48, HVQFN33, and WLCSP20 packages

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