NXP Semiconductors LPC1114FHN33/333,5

Overview

LPC1114FHN33/333 from NXP Semiconductors is an ARM Cortex-M0 32-bit microcontroller in HVQFN33 package, operating up to 50 MHz with 56 kB flash, 8 kB SRAM, and integrated peripherals including UART, I²C-Fast+, dual SPI, 10-bit ADC (8-channel), four timers, and windowed watchdog. It targets cost-sensitive embedded control in lighting, eMetering, and alarm systems.

For engineers reviewing the LPC1114FHN33/333 datasheet, LPC1114FHN33/333 pinout, LPC1114FHN33/333 application, or LPC1114FHN33/333 equivalent, key selection factors include its LPC1100XL-series power profiles, 28 GPIO with configurable open-drain mode, 7×7 mm HVQFN thermal performance, and support for RS-485 UART and Fast-mode Plus I²C at 1 Mbit/s.

Technical Context

The LPC1114FHN33/333 implements the ARM Cortex-M0 core with NVIC and Serial Wire Debug, executing instructions at up to 50 MHz via internal RC oscillator (1 % trimmed), crystal (1–25 MHz), or PLL. Its clock generation supports multiple sources including watchdog oscillator (9.4 kHz–2.3 MHz) and CLKOUT divider options.

It belongs to the LPC1100XL series, enabling power optimization through boot-ROM-resident power profiles, windowed WDT, and three low-power modes (Sleep, Deep-sleep, Deep power-down). GPIOs support edge/level interrupts, high-current sink (20 mA on two I²C pins), and configurable pull-up/pull-down resistors.

Key Specifications

Pinout & Package

HVQFN33 package: 7 mm × 7 mm × 0.85 mm body, no leads, 33-terminal thermal-enhanced quad flat construction. Pin 1 marked by index area; terminal 33 is VSS (ground).

Key Features

Applications

Equivalent & Alternatives

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

Compared with LPC1114FHN33/333, the LQFP48 variant provides 14 more GPIOs and identical functionality at the cost of larger area, while the LPC11U14FHN33/333 adds USB 2.0 at the expense of increased code size and power during USB activity - both require separate evaluation for thermal, routing, and firmware compatibility.

Availability

LPC1114FHN33/333 is available at Aetrix Electronics and suitable for smart lighting control, eMetering systems, and security alarm panels requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant packaging.

Supply support for LPC1114FHN33/333 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 markets.

The LPC1100XL series, including LPC1114FHN33/333, was designed for cost-optimized, low-power embedded control in resource-constrained applications such as lighting, metering, and appliance user interfaces.

FAQ

What is the maximum operating frequency of the LPC1114FHN33/333?

The LPC1114FHN33/333 operates at a maximum CPU frequency of 50 MHz. This is achieved using the internal PLL, which can be driven by either the 12 MHz internal RC oscillator (trimmed to ±1 %) or an external crystal (1–25 MHz). The core maintains full performance across its specified temperature range (−40 °C to +85 °C).

Does the LPC1114FHN33/333 support USB connectivity?

No, the LPC1114FHN33/333 does not include a USB controller. It provides UART, I²C-Fast+, and dual SPI interfaces but lacks native USB hardware. For USB-capable variants in the same family, consider the LPC11U14FHN33/333, which shares the HVQFN33 package and pinout but integrates a USB 2.0 device controller.

How many analog input channels does the LPC1114FHN33/333 ADC support?

The LPC1114FHN33/333 integrates a 10-bit successive approximation ADC with 8 analog input channels (AD0–AD7), all accessible on the HVQFN33 package. Channel mapping is confirmed in Table 11 and Figure 7 of the datasheet, and all eight channels are routed to dedicated pins in this variant.

What low-power modes are available on the LPC1114FHN33/333?

The LPC1114FHN33/333 supports three reduced-power modes: Sleep, Deep-sleep, and Deep power-down. In Deep power-down mode, current consumption drops below 1 μA. Wake-up from Deep-sleep is supported via up to 13 functional GPIO pins configured as interrupt sources, and the windowed watchdog timer remains active in Deep-sleep.

Is the LPC1114FHN33/333 pin-compatible with other LPC111x HVQFN33 variants?

Yes, the LPC1114FHN33/333 is pin-compatible with all other LPC111x devices in the HVQFN33 package (e.g., LPC1111FHN33/103, LPC1112FHN33/203), sharing identical pin functions and electrical characteristics. However, flash size, SRAM, and enabled peripherals (e.g., second SPI, windowed WDT) vary by suffix - verify configuration registers and memory map before firmware reuse.