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LPC11U34FBD48/421

LPC11U34FBD48/421

MPN: LPC11U34FBD48/421,
NXP USA Inc.
ARM® Cortex®-M0 LPC11Uxx Microcontroller IC 32-Bit 50MHz 48KB (48K x 8) FLASH 48-LQFP (7x7)
Active953 in stock
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Overview

The LPC11U34FBD48/421 is an ARM Cortex-M0 based 32-bit microcontroller designed for low-cost, low-power applications requiring integrated USB 2.0 connectivity. Operating at up to 50MHz, it includes 48KB of Flash, 10KB of SRAM, and a dedicated 4KB EEPROM for non-volatile data storage. Its specialized ROM-based USB drivers simplify the implementation of USB HID, MSC, and CDC classes.

Why Choose This Part

The inclusion of 4KB on-chip EEPROM significantly reduces BOM cost and PCB footprint for applications that require frequent non-volatile data updates. The ROM-based USB drivers and 5V tolerant I/O pins streamline hardware design and reduce firmware complexity in mixed-voltage environments.

Applications

USB Peripheral Devices
Utilizing the integrated USB 2.0 full-speed controller and ROM-based drivers for computer peripherals like keyboards and mice.
Industrial Data Loggers
Leveraging the 4KB of on-chip EEPROM for storing calibration data and system parameters without external memory.
Consumer Electronics Control
Providing high-efficiency processing for battery-powered handheld devices requiring 5V tolerant I/O and low standby power.
Protocol Bridge
Acting as a gateway between USB and serial interfaces like I2C, SPI, or UART in embedded systems.

Key Specifications

Speed 50MHz
RAM Size 10K x 8
Core Size 32-Bit
EEPROM Size 4K x 8
Peripherals Brown-out Detect/Reset, POR, WDT
Connectivity I2C, Microwire, SmartCard, SPI, SSP, UART/USART, USB
Mounting Type Surface Mount
Number of I/O 40
Core Processor ARM Cortex-M0
Package / Case 48-LQFP
Data Converters A/D 8x10b
Oscillator Type Internal
Program Memory Size 48KB (48K x 8)
Program Memory Type FLASH
Operating Temperature -40degC ~ 85degC (TA)
Supplier Device Package 48-LQFP (7x7)
Voltage - Supply (Vcc/Vdd) 1.8V ~ 3.6V

Getting Started

Developers can use the NXP MCUXpresso IDE and the LPCOpen software libraries to jumpstart development. The part is best evaluated using the LPC11U34 LPCXpresso board or a similar LPC11Uxx series evaluation kit. Hardware debugging is supported through standard SWD and JTAG interfaces.

Also Consider

STM32L052C8T6 STMicroelectronics - Offers an ARM Cortex-M0+ core with even lower power consumption and crystal-less USB operation.
ATSAMD21G18A-AU MCHPMicrochip - Provides a more powerful Cortex-M0+ core with larger Flash and RAM for complex USB applications.
EFM32HG322F64G-C-QFP48 SiLSilicon Labs - Excellent for battery-critical applications requiring USB connectivity with highly optimized low-power states.