NXP Semiconductors LPC11E14FHN33/401,

Overview

LPC11E14FHN33/401 from NXP Semiconductors is a 32-bit ARM Cortex-M0 microcontroller in HVQFN33 package, operating up to 50 MHz with 32 kB flash, 10 kB SRAM, and 4 kB byte-erasable EEPROM. It integrates a 10-bit ADC (8-channel), dual SSP interfaces, Fast-mode Plus I²C, RS-485-capable USART with smart card support, four timers, and 28 GPIO pins - deployed in handheld scanners and industrial control systems requiring compact, low-power embedded processing.

For engineers reviewing the LPC11E14FHN33/401 datasheet, LPC11E14FHN33/401 pinout, LPC11E14FHN33/401 application, or LPC11E14FHN33/401 equivalent, key selection criteria include its HVQFN33 thermal-enhanced package, 28 GPIO count, 4 kB EEPROM endurance, 3.3 V single-supply operation, and support for Deep power-down wake-up via dedicated WAKEUP pin.

Technical Context

The LPC11E14FHN33/401 implements an ARM Cortex-M0 core with NVIC supporting 24 vectored interrupts and non-maskable interrupt (NMI) routing from multiple sources. Its memory subsystem includes 16 kB boot ROM with integer division routines and power profile APIs, enabling rapid low-power configuration.

Clock generation combines a 1–25 MHz crystal oscillator, 12 MHz internal RC oscillator, programmable watchdog oscillator, and PLL for CPU scaling to 50 MHz. Power management includes four reduced-power modes (Sleep, Deep-sleep, Power-down, Deep power-down), with wake-up capability from Deep power-down via a single dedicated pin with 20 ns glitch filter.

Key Specifications

Pinout & Package

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 LPC11U14FHN33/401, the LPC11E14FHN33/401 prioritizes data persistence over USB connectivity; versus LPC812M101JDH20, it delivers higher memory capacity, EEPROM, and RS-485 support at the cost of larger package and higher unit price - making it optimal for feature-rich, field-deployed embedded controllers.

Availability

LPC11E14FHN33/401 is available at Aetrix Electronics and suitable for handheld scanners, industrial control panels, and medical diagnostic tools requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant packaging.

Supply support for LPC11E14FHN33/401 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 LPC11E1x product line targets cost-sensitive, low-power embedded systems needing rich analog/digital peripherals and EEPROM in compact packages - designed specifically for 8/16-bit MCU replacement in consumer, medical, and industrial edge devices.

FAQ

What is the maximum operating frequency of the LPC11E14FHN33/401?

The LPC11E14FHN33/401 operates at a maximum CPU frequency of 50 MHz, achievable using either the internal 12 MHz IRC oscillator with PLL multiplication or an external 1–25 MHz crystal oscillator. This frequency is fully supported across the specified industrial temperature range (−40 °C to +85 °C) and 1.8–3.6 V supply voltage.

Does the LPC11E14FHN33/401 include EEPROM, and what are its write characteristics?

Yes, the LPC11E14FHN33/401 integrates 4 kB of on-chip EEPROM that is byte-erasable and byte-programmable. It supports In-Application Programming (IAP) via the boot ROM API, enabling firmware-controlled writes during runtime. Endurance is rated for ≥100,000 write/erase cycles, with data retention guaranteed for 10 years at 85 °C.

How many GPIO pins does the LPC11E14FHN33/401 provide, and what advanced features do they support?

The LPC11E14FHN33/401 provides 28 general-purpose I/O pins in its HVQFN33 package. Each pin supports configurable pull-up/pull-down resistors, repeater mode, and open-drain output. Eight pins can serve as edge- or level-sensitive interrupt sources, and two GPIO group interrupt modules allow pattern-matching logic across pin groups - enabling efficient keypad scanning or status monitoring without CPU polling.

Can the LPC11E14FHN33/401 enter Deep power-down mode, and how is wake-up implemented?

Yes, the LPC11E14FHN33/401 supports Deep power-down mode with typical current draw below 1 µA. Wake-up is implemented exclusively via the dedicated WAKEUP pin (PIO0_16), which features a 20 ns glitch filter. An external LOW-going pulse ≥50 ns triggers wake-up and full system restart; the pin must be pulled HIGH externally to enter Deep power-down mode.

What communication interfaces are integrated into the LPC11E14FHN33/401?

The LPC11E14FHN33/401 integrates a Fast-mode Plus I²C-bus interface (1 Mbit/s), one RS-485/EIA-485 USART with synchronous mode and ISO 7816-3 smart card support, and two SSP controllers with FIFO and multi-protocol capability. These interfaces operate independently and can be simultaneously active, supporting complex peripheral ecosystems in space-constrained designs.