NXP Semiconductors LPC1114FHN33/301,5

Overview

LPC1114FHN33/301 from NXP Semiconductors is a 32-bit ARM Cortex-M0 microcontroller in HVQFN33 package, delivering up to 50 MHz CPU operation, 32 kB flash, 8 kB SRAM, and integrated peripherals including UART with RS-485 support, Fast-mode Plus I²C, two SPI interfaces, four timers, and a 10-bit ADC with 8-channel input multiplexing - deployed in lighting control and alarm systems.

For engineers reviewing the LPC1114FHN33/301 datasheet, LPC1114FHN33/301 pinout, LPC1114FHN33/301 application, or LPC1114FHN33/301 equivalent, key selection criteria include flash/SRAM capacity, HVQFN33 thermal performance, UART RS-485 capability, and power profile support for low-power embedded designs.

Technical Context

The LPC1114FHN33/301 belongs to the LPC1100 series (non-L/non-XL variant), confirming absence of power profiles, windowed watchdog timer, and second SPI interface - unlike LPC1100L/XL derivatives. It uses the ARM Cortex-M0 core with NVIC and Serial Wire Debug, and supports clock sources including 12 MHz internal RC oscillator (±1 %), crystal oscillator (1–25 MHz), and programmable PLL for full-speed operation.

Peripheral integration includes one UART with fractional baud rate generation and RS-485 support, one Fast-mode Plus I²C bus (1 Mbit/s), one SPI controller (SSP features), four general-purpose timers (up to 13 match outputs), and a 10-bit ADC with 8 selectable input channels - all mapped to 28 GPIO pins in the HVQFN33 package.

Key Specifications

Pinout & Package

HVQFN33 package: plastic thermal-enhanced very thin quad flat no-lead package, 7 mm × 7 mm body, 0.85 mm height, 33 terminals, exposed thermal pad (pin 33 = VSS).

Key Features

Applications

Equivalent & Alternatives

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

Compared with LPC1114FHN33/301, the LQFP48 alternative offers expanded I/O and SPI capability at the cost of size and thermal performance, while the LPC1100L variant adds runtime power optimization features without altering footprint or memory - enabling drop-in upgrades where power efficiency outweighs feature parity.

Availability

LPC1114FHN33/301 is available at Aetrix Electronics and suitable for lighting control, alarm systems, and eMetering requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant manufacturing.

Supply support for LPC1114FHN33/301 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 LPC1100 series targets cost-sensitive 8/16-bit MCU replacements, emphasizing low power, small footprint, and integrated analog/digital peripherals for embedded control in appliances and infrastructure.

FAQ

What is the maximum operating frequency of the LPC1114FHN33/301?

The LPC1114FHN33/301 operates at a maximum CPU frequency of 50 MHz, achieved via its internal PLL driven by either the 12 MHz internal RC oscillator (±1 % accuracy) or an external crystal (1–25 MHz). This frequency enables real-time processing of sensor data and protocol stacks while maintaining low power consumption in the HVQFN33 package.

Does the LPC1114FHN33/301 support a second SPI interface?

No, the LPC1114FHN33/301 does not support a second SPI interface. As a member of the base LPC1100 series (not LPC1100L or LPC1100XL), it includes only one SPI controller (SPI0) with SSP features. The second SPI (SPI1) is exclusive to LQFP48-packaged variants such as LPC1114FBD48/301 and requires the larger pin count to expose those signals.

What ADC resolution and channel count does the LPC1114FHN33/301 provide?

The LPC1114FHN33/301 integrates a 10-bit successive approximation register (SAR) ADC with input multiplexing across 8 pins (AD0–AD7), all accessible in the HVQFN33 package. This configuration supports simultaneous sampling of multiple analog sources - such as temperature sensors, light detectors, or supply rails - without external multiplexers or additional ICs.

Is the LPC1114FHN33/301 compatible with power profile APIs for dynamic power management?

No, the LPC1114FHN33/301 does not support power profiles. It belongs to the base LPC1100 series, which lacks the boot ROM-resident power profile API found in LPC1100L and LPC1100XL variants. Power management is limited to Sleep, Deep-sleep, and Deep power-down modes controlled directly via PMU registers, without runtime optimization presets.

What debug interface does the LPC1114FHN33/301 use, and how many pins are required?

The LPC1114FHN33/301 uses Serial Wire Debug (SWD), requiring only two pins: SWCLK (pin 6) and SWDIO (pin 32). This two-wire interface replaces JTAG, reducing PCB routing complexity and enabling non-intrusive real-time debugging - essential for validating timing-critical functions like UART RS-485 framing or ADC sampling in the LPC1114FHN33/301.