NXP Semiconductors LPC1114FBD48/303,1

Overview

LPC1114FBD48/303 from NXP Semiconductors is a 32-bit ARM Cortex-M0 microcontroller in LQFP48 package, operating at up to 50 MHz with 32 kB flash, 8 kB SRAM, 10-bit ADC (8-channel), UART with RS-485 support, and Fast-mode Plus I²C interface - deployed in smart lighting control systems requiring low-power, deterministic real-time response.

For engineers reviewing the LPC1114FBD48/303 datasheet, LPC1114FBD48/303 pinout, LPC1114FBD48/303 application, or LPC1114FBD48/303 equivalent, this page delivers verified electrical specifications, validated LQFP48 pin mapping, confirmed LPC1100XL series features (power profiles, windowed WDT, open-drain GPIO), and direct alternative part comparisons for industrial firmware migration and BOM optimization.

Technical Context

The LPC1114FBD48/303 implements the ARM Cortex-M0 core with NVIC and Serial Wire Debug, executing from on-chip flash with 1-cycle instruction fetch at 50 MHz. Its clock system integrates a 12 MHz ±1 % internal RC oscillator, crystal oscillator (1–25 MHz), programmable watchdog oscillator (9.4 kHz–2.3 MHz), and PLL for CPU frequency scaling.

Peripheral architecture includes two SPI controllers (SSP-capable, FIFO-enabled), one UART with fractional baud rate generation and RS-485 support, one Fast-mode Plus I²C bus (1 Mbit/s), four general-purpose timers (two 32-bit, two 16-bit), and a 10-bit ADC with multiplexed inputs across eight pins - all accessible via 42 GPIOs with configurable pull-up/pull-down and open-drain mode.

Key Specifications

Pinout & Package

LQFP48 package: plastic low-profile quad flat package, 48 leads, body size 7 × 7 × 1.4 mm, surface-mount compatible with standard reflow profiles.

Key Features

Applications

Equivalent & Alternatives

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

Compared with LPC1114FBD48/303, the /333 variant offers 75 % more flash for enhanced firmware resilience, while the LPC1115FBD48/303 doubles flash capacity - both retain identical GPIO count, ADC channels, and low-power profile, making them drop-in upgrades for memory-constrained designs.

Availability

LPC1114FBD48/303 is available at Aetrix Electronics and suitable for smart lighting control, energy metering interfaces, home alarm panels, and white goods sensor hubs requiring stable component supply across production lifecycles.

Supply support for LPC1114FBD48/303 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 specializing in secure connectivity solutions for automotive, industrial, and IoT applications.

The LPC111x family targets cost-sensitive 8/16-bit MCU replacements, delivering ARM Cortex-M0 performance with ultra-low power consumption and simplified toolchain adoption for industrial control and consumer electronics.

FAQ

What is the maximum operating frequency of the LPC1114FBD48/303?

The LPC1114FBD48/303 operates at a maximum CPU frequency of 50 MHz. This speed is achievable using the on-chip PLL driven by either the internal 12 MHz RC oscillator or an external crystal (1–25 MHz). The core maintains deterministic interrupt latency and single-cycle instruction execution at this rate, enabling real-time control tasks in lighting and metering applications where the LPC1114FBD48/303 is commonly deployed.

Does the LPC1114FBD48/303 support RS-485 communication?

Yes, the LPC1114FBD48/303 UART supports RS-485 operation through hardware-assisted half-duplex mode. It provides RTS control signals (on PIO1_5) and automatic direction control logic, eliminating external transceiver handshaking circuitry. This capability is confirmed in the LPC1110/11/12/13/14/15 datasheet Rev. 9.2 and is fully functional in the LPC1100XL series variant denoted by the "/303" suffix of the LPC1114FBD48/303.

What ADC resolution and channel count does the LPC1114FBD48/303 provide?

The LPC1114FBD48/303 integrates a 10-bit successive approximation ADC with up to eight input channels (AD[7:0]), accessible on the LQFP48 package. This matches the specification for LPC1100XL-series devices in Table 2 of the datasheet. The ADC supports single-ended conversions with programmable sampling rates, making it suitable for sensing ambient light, temperature, or motor current in applications where the LPC1114FBD48/303 serves as the primary sensor interface.

Is the LPC1114FBD48/303 pin-compatible with other LQFP48 variants in the LPC111x family?

Yes, the LPC1114FBD48/303 shares identical LQFP48 pinout with all other /FBD48 variants including LPC1113FBD48/303 and LPC1115FBD48/303. Pin functions are consistent across the LPC1100XL series in this package, as verified in Figures 3 and 4 of the datasheet. However, some peripheral enablement (e.g., second SPI, extra ADC channels) depends on flash size and series designation - the LPC1114FBD48/303 enables both SPI interfaces and all eight ADC inputs per its LPC1100XL classification.

What power-saving features are enabled in the LPC1114FBD48/303?

The LPC1114FBD48/303 includes Sleep, Deep-sleep, and Deep power-down modes managed by an integrated PMU. As an LPC1100XL-series device, it supports power profiles callable from boot ROM and a windowed watchdog timer. Deep power-down draws less than 1 μA, with wake-up possible via 13 GPIOs - features explicitly documented for /303-suffixed LQFP48 parts in Table 2 and Section 2 of the datasheet, ensuring reliability in battery-operated alarm and metering systems using the LPC1114FBD48/303.