NXP Semiconductors LPC11A04UK,118

Overview

LPC11A04UK,118 from NXP Semiconductors is a 32-bit ARM Cortex-M0 microcontroller in WLCSP20 package, operating up to 50 MHz with 32 kB flash, 8 kB SRAM, and 4 kB EEPROM. It integrates a 10-bit ADC (8 channels), 10-bit DAC, analog comparator, temperature sensor, and mixed-signal peripherals for embedded control in space-constrained industrial sensors and medical instrumentation.

For engineers reviewing the LPC11A04UK,118 datasheet, LPC11A04UK,118 pinout, LPC11A04UK,118 application, or LPC11A04UK,118 equivalent, key selection criteria include its wafer-level chip-scale packaging (2.5 × 2.5 × 0.6 mm), 18 GPIO pins, single 3.3 V supply (2.6–3.6 V), −40 °C to +85 °C operation, and support for SWD debug and ISP/IAP programming.

Technical Context

The LPC11A04UK,118 implements an ARM Cortex-M0 core with NVIC and system tick timer, paired with a configurable analog/mixed-signal subsystem including dedicated ADC/DAC clocking and programmable voltage reference for the analog comparator. Its memory architecture includes 16 kB boot ROM with integer division and I²C driver routines, enabling rapid firmware initialization and peripheral offload.

Digital connectivity comprises one Fast-mode Plus I²C-bus (1 Mbit/s), one RS-485/EIA-485 USART with fractional baud rate generation and FIFO, two SSP controllers (up to 25 Mbit/s), and four counter/timers (two 16-bit, two 32-bit) with capture/match capability. Clock generation supports crystal (1–25 MHz), 12 MHz ±1% IRC, low-frequency oscillator, and PLL for full-speed CPU operation.

Key Specifications

Pinout & Package

Package: WLCSP20 wafer-level chip-size package (2.5 × 2.5 × 0.6 mm), 20-bump array with ball pitch of 0.4 mm. Designed for high-density PCB layouts and minimal board footprint in portable and implantable systems.

Key Features

Applications

Equivalent & Alternatives

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

Compared with LPC11A14FHN33/301 and LPC11U14FHN33/201, the LPC11A04UK,118 uniquely combines wafer-level packaging, integrated DAC/analog comparator/temperature sensor, and 18-GPIO density - making it optimal for miniaturized, analog-intensive embedded systems where PCB area and component count are constrained.

Availability

LPC11A04UK,118 is available at Aetrix Electronics and suitable for industrial sensor nodes, portable medical monitors, fire alarm control panels, and smart building actuators requiring stable component supply and long-term manufacturability.

Supply support for LPC11A04UK,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 company headquartered in Eindhoven, Netherlands, specializing in secure connectivity solutions for automotive, industrial, and IoT applications.

The LPC11Axx product line is designed for cost-sensitive, space-constrained embedded control applications requiring integrated analog functionality, low-power operation, and ARM Cortex-M0 software compatibility - targeting industrial automation, medical instrumentation, and building management systems.

FAQ

What is the maximum operating frequency of the LPC11A04UK,118?

The LPC11A04UK,118 operates at a maximum CPU frequency of 50 MHz, achievable via its integrated PLL using the internal 12 MHz IRC oscillator, external crystal (1–25 MHz), or external clock source. This frequency is fully supported across its specified temperature range (−40 °C to +85 °C) and supply voltage (2.6–3.6 V).

Does the LPC11A04UK,118 support in-application programming (IAP) for EEPROM?

Yes, the LPC11A04UK,118 supports In-Application Programming (IAP) for both flash and EEPROM memory through its on-chip bootloader. This allows firmware to update non-volatile configuration data stored in the 4 kB EEPROM without halting program execution or requiring external tools.

How many analog-to-digital converter (ADC) input channels does the LPC11A04UK,118 have?

The LPC11A04UK,118 includes a 10-bit ADC with multiplexing across 8 input pins (AD0–AD7), mapped to GPIO pins PIO0_6 through PIO0_15. All channels share a common reference and support programmable sample rates and trigger sources including timers and external events.

What debug interface is supported by the LPC11A04UK,118?

The LPC11A04UK,118 supports Serial Wire Debug (SWD) as the primary debug interface, with SWDIO and SWCLK signals routed to PIO0_3 and PIO0_2 respectively in the WLCSP20 package. JTAG boundary scan is also supported, though SWD is recommended for its reduced pin count and higher bandwidth.

Is the LPC11A04UK,118 compatible with standard I²C-bus Fast-mode Plus specifications?

Yes, the LPC11A04UK,118 implements a Fast-mode Plus I²C-bus interface compliant with the I²C-bus specification, supporting data rates up to 1 Mbit/s with multiple address recognition and monitor mode. Its SCL and SDA pins (PIO0_2 and PIO0_3) are true open-drain with 50 ns glitch filtering for robust operation in electrically noisy environments.