NXP Semiconductors LPC11A02UK,118

Overview

LPC11A02UK,118 from NXP Semiconductors is a 32-bit ARM Cortex-M0 microcontroller in WLCSP20 package, operating up to 50 MHz with 16 kB flash, 4 kB SRAM, 2 kB EEPROM, 10-bit ADC (8 channels), 10-bit DAC, analog comparator, temperature sensor, and integrated I²C, USART, and two SSP interfaces. It targets compact, low-power embedded control in space-constrained industrial and sensor applications.

For engineers reviewing the LPC11A02UK,118 datasheet, LPC11A02UK,118 pinout, LPC11A02UK,118 application, or LPC11A02UK,118 equivalent, key selection criteria include its wafer-level chip-scale packaging (2.5 × 2.5 × 0.6 mm), 18 GPIOs with configurable glitch filtering, single 3.3 V supply (2.6–3.6 V), −40 °C to +85 °C operation, and on-chip boot ROM with ISP/IAP support.

Technical Context

The LPC11A02UK,118 implements an ARM Cortex-M0 core with NVIC and Serial Wire Debug (SWD), paired with a flexible analog/mixed-signal subsystem including dedicated ADC/DAC/ACMP peripherals and internal voltage reference. Its clock system integrates a 12 MHz ±1% IRC, crystal oscillator (1–25 MHz), PLL, and low-power LFOsc for multi-mode timing control.

Digital peripheral integration includes one Fast-mode Plus I²C-bus interface (1 Mbit/s), one RS-485-capable USART with fractional baud rate generation and FIFO, two SSP controllers supporting SPI/SSI modes at up to 25 Mbit/s, four general-purpose timers (two 16-bit, two 32-bit), and programmable Windowed Watchdog Timer with dedicated low-power oscillator.

Key Specifications

Pinout & Package

Package: WLCSP20 (wafer-level chip-scale package), 2.5 × 2.5 × 0.6 mm, 20-bump array, suitable for ultra-compact PCB layouts and high-density interconnects.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar microcontroller applications.

Compared with LPC11A02UK,118, the LPC11A04UK,118 offers scalable memory for future firmware growth, while the LPC11U12FHN33/101 trades package size and analog integration for USB capability - neither is drop-in replaceable due to differing pinouts and feature sets.

Availability

LPC11A02UK,118 is available at Aetrix Electronics and suitable for industrial sensor nodes, compact medical monitors, and smart HVAC actuators requiring stable component supply and long-term manufacturability.

Supply support for LPC11A02UK,118 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

NXP Semiconductors is a global semiconductor leader delivering secure, connected, and intelligent solutions for automotive, industrial, IoT, mobile, and communication infrastructure markets.

The LPC11Axx product line is designed for cost-sensitive, space-constrained embedded applications requiring ARM Cortex-M0 performance, integrated analog peripherals, and ultra-small packaging - targeting sensor fusion, portable instrumentation, and smart edge devices.

FAQ

What is the maximum operating frequency of the LPC11A02UK,118?

The LPC11A02UK,118 operates at a maximum CPU frequency of 50 MHz, achievable via its internal 12 MHz ±1% IRC oscillator with PLL multiplication, external crystal (1–25 MHz), or external clock source. This frequency is fully supported across the specified temperature and voltage range (−40 °C to +85 °C, 2.6–3.6 V).

Does the LPC11A02UK,118 support in-system programming (ISP)?

Yes, the LPC11A02UK,118 supports in-system programming via its built-in boot ROM, enabling firmware updates over UART (using PIO0_0/RESET and PIO0_1/RXD) without external debug hardware. The boot ROM also provides IAP routines for flash and EEPROM, allowing runtime reprogramming from application code.

How many analog-to-digital converter (ADC) channels does the LPC11A02UK,118 have?

The LPC11A02UK,118 features a single 10-bit successive-approximation ADC with eight input channels (AD0–AD7), mapped to GPIO pins PIO0_6 through PIO0_15. Each channel supports programmable sample time, software/hardware triggering, and configurable resolution down to 8 bits.

What debug interface is supported by the LPC11A02UK,118?

The LPC11A02UK,118 supports Serial Wire Debug (SWD) as its primary debug interface, using PIO0_2 (SWCLK) and PIO0_3 (SWDIO) in the WLCSP20 package. JTAG is also available but requires remapping TCK/TMS/TDO/TDI to alternate pins - SWD is recommended for minimal pin count and full debug functionality.

Is the LPC11A02UK,118 RoHS compliant and qualified for industrial temperature range?

Yes, the LPC11A02UK,118 is RoHS compliant and rated for industrial temperature operation from −40 °C to +85 °C. It includes UnderVoltage LockOut (UVLO) protection triggered at 2.4 V and Brown-Out Detect (BOD) with programmable thresholds, ensuring robust behavior under power supply transients common in industrial environments.