NXP Semiconductors LPC1114JHN33/333E

Overview

LPC1114JHN33/333E from NXP Semiconductors is an ARM Cortex-M0 32-bit microcontroller in a 33-terminal HVQFN package, featuring 56 kB flash, 8 kB SRAM, one UART with RS-485 support, one Fast-mode Plus I²C interface, two SPI controllers, four timers, and a 10-bit ADC-designed for low-power industrial control and smart sensor nodes.

For engineers reviewing the LPC1114JHN33/333E datasheet, LPC1114JHN33/333E pinout, LPC1114JHN33/333E application, or LPC1114JHN33/333E equivalent, this page delivers verified specifications, validated pin functions, confirmed temperature range (−40 °C to +105 °C), exact memory mapping, and real-world substitution guidance for embedded firmware development and BOM optimization.

Technical Context

The LPC1114JHN33/333E implements the ARM Cortex-M0 core with NVIC and system tick timer, operating at up to 50 MHz using internal 12 MHz RC oscillator (±1 %) or external crystal (1–25 MHz). It integrates a programmable windowed watchdog timer and power management unit supporting Sleep, Deep-sleep, and Deep power-down modes.

Its peripheral set includes UART with fractional baud rate generation and RS-485 support, Fast-mode Plus I²C (1 Mbit/s), two SPI controllers with FIFO and multi-protocol capability, four general-purpose timers (two 32-bit, two 16-bit), and a 10-bit ADC with up to 8 input channels-all accessible via 28 GPIO pins in the HVQFN33 package.

Key Specifications

Pinout & Package

HVQFN33 (plastic thermal enhanced very thin quad flat package; no leads; 33 terminals; body 7 × 7 × 0.85 mm).

Key Features

Applications

Equivalent & Alternatives

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

Compared with LPC1114FHN33/333, the LPC1114JHN33/333E adds extended temperature operation without sacrificing performance or features; versus LPC1114JBD48/333, it trades I/O count and package size for compactness and thermal efficiency in space-constrained industrial modules.

Availability

LPC1114JHN33/333E is available at Aetrix Electronics and suitable for smart lighting control, industrial sensor nodes, energy metering interfaces, and alarm panel controllers requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for LPC1114JHN33/333E 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 focused on secure connectivity solutions for automotive, industrial, and IoT applications.

The LPC111x series targets cost-sensitive, low-power embedded systems-delivering ARM Cortex-M0 performance with integrated analog, communication, and power management features for resource-constrained edge devices.

FAQ

What is the maximum operating frequency of the LPC1114JHN33/333E?

The LPC1114JHN33/333E operates at a maximum CPU frequency of 50 MHz. This is achieved using either the internal 12 MHz ±1 % RC oscillator (with PLL multiplication) or an external crystal oscillator ranging from 1 MHz to 25 MHz. The PLL allows full-speed operation without requiring a high-frequency crystal, simplifying board design and reducing BOM cost while maintaining deterministic timing for real-time tasks.

Does the LPC1114JHN33/333E support In-System Programming (ISP)?

Yes, the LPC1114JHN33/333E supports In-System Programming via its on-chip bootloader. Firmware updates can be performed through UART0 using standard ISP commands, enabling field upgrades without requiring JTAG/SWD debug hardware. This capability is fully functional across the entire temperature range and requires only a simple serial interface and minimal external circuitry-making it ideal for deployed industrial devices requiring maintenance and feature enhancements.

How many ADC channels does the LPC1114JHN33/333E provide, and what is the resolution?

The LPC1114JHN33/333E includes a 10-bit successive approximation ADC with up to 8 input channels (AD[7:0]), accessible on dedicated pins in the HVQFN33 package. The ADC supports single-ended conversion with programmable sample rates and trigger sources including timers and software commands. Its 10-bit resolution delivers 1024 discrete levels across the 0–VDD range, sufficient for precision sensor interfacing in applications such as temperature monitoring and battery voltage sensing.

What debug interface does the LPC1114JHN33/333E use, and is SWD supported?

The LPC1114JHN33/333E uses ARM Serial Wire Debug (SWD) as its primary debug interface, implemented on dedicated SWDIO and SWCLK pins (shared with GPIO and timer functions). SWD provides full JTAG-equivalent debugging-including breakpoints, watchpoints, memory inspection, and flash programming-with only two pins required. This reduces PCB routing complexity and enables compact debug probe integration, and is fully supported by Keil MDK, LPCXpresso, and open-source tools like OpenOCD.

Is the LPC1114JHN33/333E pin-compatible with other LPC111x variants in HVQFN33?

Yes, the LPC1114JHN33/333E shares identical pinout and package dimensions with all other LPC111x HVQFN33 variants-including LPC1111, LPC1112, LPC1113, and LPC1114 derivatives-regardless of flash size, SRAM, or temperature grade. This enables drop-in replacement within the same family for design reuse, firmware porting, or qualification flexibility. However, functional differences (e.g., presence of second SPI or windowed WDT) must be verified in software, as they are enabled by configuration bits rather than pin assignment.