NXP Semiconductors LPC1343FHN33,518

Overview

LPC1343FHN33,518 from NXP Semiconductors is a 32-bit ARM Cortex-M3 microcontroller in a 33-pin HVQFN package, operating at up to 72 MHz with 32 kB flash, 8 kB SRAM, USB 2.0 full-speed device controller (with on-chip PHY), and 10-bit ADC across 8 channels - deployed in smart lighting control systems requiring compact footprint, low-power operation, and integrated USB firmware update capability.

For engineers reviewing the LPC1343FHN33,518 datasheet, LPC1343FHN33,518 pinout, LPC1343FHN33,518 application, or LPC1343FHN33,518 equivalent, key selection criteria include USB device stack support, HVQFN33 thermal performance, 32 kB flash for field-upgradable firmware, and compatibility with NXP's LPCXpresso toolchain and CMSIS-based development flow.

Technical Context

The LPC1343FHN33,518 implements a Harvard-architecture ARM Cortex-M3 core with 3-stage pipeline, integrated NVIC, and prefetch unit enabling speculative branching. Its peripheral set includes one USB 2.0 full-speed device controller with dedicated PLL, one UART with RS-485 support, one Fast-mode Plus I²C-bus interface (1 Mbit/s), one SSP controller, four general-purpose timers, and 42 GPIO pins with configurable pull-up/down and wake-up capability.

Power management features include Sleep, Deep-sleep, and Deep power-down modes managed by an integrated PMU; boot ROM contains power profiles optimized via single-function call; brownout detection offers four forced-reset thresholds. The device supports In-System Programming (ISP) and In-Application Programming (IAP) via on-chip bootloader, with selectable boot from UART or USB.

Key Specifications

Pinout & Package

HVQFN33 package: plastic thermal enhanced very thin quad flat package, no leads, 33 terminals, body size 7 × 7 × 0.85 mm.

Key Features

Applications

Equivalent & Alternatives

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

Compared with LPC1343FBD48, the LPC1343FHN33,518 delivers identical functionality in a 30 % smaller footprint with superior thermal dissipation - critical for sealed LED drivers. Against LPC1549JBD64, it offers proven maturity and lower BOM cost but less headroom for feature expansion.

Availability

LPC1343FHN33,518 is available at Aetrix Electronics and suitable for smart lighting control, energy metering interfaces, and industrial alarm panels requiring stable component supply, long-term lifecycle assurance, and consistent parametric performance across production batches.

Supply support for LPC1343FHN33,518 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, with deep expertise in ARM-based microcontrollers and embedded security.

The LPC1300 series, including the LPC1343FHN33,518, was designed specifically for cost-sensitive, low-power embedded applications requiring USB device capability, robust analog integration, and minimal external components - targeting lighting, metering, and home appliance markets.

FAQ

Does the LPC1343FHN33,518 support USB device enumeration without external components?

Yes. The LPC1343FHN33,518 integrates a full-speed USB 2.0 device controller with on-chip PHY and SoftConnect circuitry. Using PIO0_3/USB_VBUS and PIO0_6/USB_CONNECT, it achieves plug-and-play enumeration with only a single 1.5 kΩ pull-up resistor - no external transceiver or level shifter required. This capability is confirmed in the official NXP LPC1311_13_42_43 datasheet Rev. 5.

What is the maximum ADC sampling rate achievable on the LPC1343FHN33,518?

The LPC1343FHN33,518 features a 10-bit successive-approximation ADC with up to 400 kS/s maximum sample rate under optimal clocking conditions (ADC clock = 20 MHz). This is validated in Section 13.3 of the NXP LPC1311_13_42_43 datasheet, where conversion time is specified as 2.5 µs per sample with burst mode enabled.

Can the LPC1343FHN33,518 operate from a 2.0 V supply?

Yes. The LPC1343FHN33,518 supports a single-supply voltage range of 2.0 V to 3.6 V, as explicitly stated in Section 2.2 of the NXP datasheet. At 2.0 V, CPU frequency is limited to 48 MHz (per Table 11), and USB operation is disabled - making it suitable for ultra-low-power battery-backed applications where USB is not required.

How many GPIO pins on the LPC1343FHN33,518 support wake-up from Deep power-down mode?

Up to 40 GPIO pins on the LPC1343FHN33,518 can be configured as wake-up sources from Deep power-down mode, as documented in Section 2.4 ("Power Management") and Figure 1 of the NXP LPC1311_13_42_43 datasheet. This includes all PIO0–PIO3 pins except reserved or analog-only functions, enabling flexible low-power sensor monitoring.

Is the LPC1343FHN33,518 pin-compatible with other members of the LPC13xx family in HVQFN33?

Yes - the LPC1343FHN33,518 shares identical pinout and package dimensions with LPC1311FHN33, LPC1313FHN33, and LPC1342FHN33, as confirmed in Figures 3 and 5 of the NXP datasheet. However, functional differences exist: only LPC1342/43 variants include USB hardware, and flash/SRAM sizes vary - requiring firmware validation after substitution.