NXP Semiconductors LPC11E37FBD64/501E

Overview

LPC11E37FBD64/501 from NXP Semiconductors is a 32-bit ARM Cortex-M0 microcontroller in LQFP64 package, operating at up to 50 MHz CPU frequency with 128 kB flash, 12 kB SRAM, and 4 kB EEPROM. It integrates a 10-bit ADC (8 channels), one RS-485/UART USART with smart card support, two SSP interfaces, one Fast-mode Plus I²C-bus (1 Mbit/s), four general-purpose timers, and up to 54 GPIO pins. It targets industrial control and medical devices requiring low-power, deterministic real-time operation.

For engineers reviewing the LPC11E37FBD64/501 datasheet, LPC11E37FBD64/501 pinout, LPC11E37FBD64/501 application, or LPC11E37FBD64/501 equivalent, key selection criteria include its 50 MHz Cortex-M0 core, 54 GPIO count with configurable pull-up/pull-down and interrupt capability, 128 kB flash for firmware scalability, 4 kB byte-erasable EEPROM for nonvolatile data logging, and RS-485/USART with synchronous mode for robust industrial communication.

Technical Context

The LPC11E37FBD64/501 implements an ARM Cortex-M0 core with NVIC and NMI support, enabling efficient interrupt handling in resource-constrained embedded systems. Its clock system combines a 1–25 MHz crystal oscillator, 12 MHz internal RC oscillator, and PLL for flexible frequency scaling up to 50 MHz.

Power management includes four low-power modes (Sleep, Deep-sleep, Power-down, Deep power-down) controlled by an integrated PMU, with wake-up via GPIO, watchdog, or dedicated WAKEUP pin. Brownout detection offers four programmable thresholds for reliable operation across 1.8 V–3.6 V supply range.

Key Specifications

Pinout & Package

Package: LQFP64 (plastic low profile quad flat package; 64 leads; body 10 × 10 × 1.4 mm; SOT314-2).

Key Features

Applications

Equivalent & Alternatives

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

Compared with LPC11U37FBD64/401, the LPC11E37FBD64/501 trades USB capability for cost-sensitive industrial applications needing EEPROM persistence; versus LPC1343FBD48/01, it prioritizes memory size and peripheral richness over raw CPU speed and M3-specific features.

Availability

LPC11E37FBD64/501 is available at Aetrix Electronics and suitable for industrial control, medical devices, and consumer peripherals requiring stable component supply, long-term lifecycle support, and consistent parametric performance across temperature ranges (−40 °C to +85 °C).

Supply support for LPC11E37FBD64/501 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 specializing in secure connectivity solutions for automotive, industrial, and IoT applications.

The LPC11E3x product line delivers energy-efficient, cost-optimized ARM Cortex-M0 microcontrollers targeting 8/16-bit MCU replacement in space- and power-constrained embedded systems.

FAQ

What is the maximum operating frequency of the LPC11E37FBD64/501?

The LPC11E37FBD64/501 operates at a maximum CPU frequency of 50 MHz. This is achieved using either the internal 12 MHz IRC oscillator with PLL multiplication or an external crystal oscillator (1–25 MHz) fed into the PLL. The 50 MHz clock drives both the core and all APB peripherals, ensuring deterministic timing for real-time control tasks in the LPC11E37FBD64/501.

Does the LPC11E37FBD64/501 include EEPROM, and what are its programming characteristics?

Yes, the LPC11E37FBD64/501 integrates 4 kB of on-chip EEPROM that is byte-erasable and byte-programmable. It includes on-chip API support for simplified firmware integration, eliminating the need for external EEPROM chips. The EEPROM retains data across power cycles and supports up to 100,000 write/erase cycles, making it suitable for storing calibration data, device configuration, or usage logs in the LPC11E37FBD64/501.

How many GPIO pins does the LPC11E37FBD64/501 support, and what advanced I/O features are available?

The LPC11E37FBD64/501 supports up to 54 general-purpose I/O pins in its LQFP64 package. Each pin offers configurable pull-up/pull-down resistors, repeater mode, and open-drain capability. Up to 8 pins can serve as edge- or level-sensitive interrupt sources, and two GPIO grouped interrupt modules allow pattern-matching interrupts. High-current drivers (20 mA source/sink) are available on specific pins for direct LED or relay control in the LPC11E37FBD64/501.

What communication interfaces are integrated into the LPC11E37FBD64/501?

The LPC11E37FBD64/501 integrates one RS-485/EIA-485 USART with smart card (ISO 7816-3) and synchronous mode support, two SSP controllers (SPI/SSI compatible), and one Fast-mode Plus I²C-bus interface (1 Mbit/s). These interfaces enable robust industrial networking, sensor array expansion, and communication with legacy and modern peripherals without external level shifters or protocol translators in the LPC11E37FBD64/501.

What low-power modes does the LPC11E37FBD64/501 support, and how is wake-up managed?

The LPC11E37FBD64/501 supports four reduced-power modes: Sleep, Deep-sleep, Power-down, and Deep power-down. Wake-up from Sleep and Deep-sleep occurs via reset, selectable GPIO pins, or watchdog interrupt. From Power-down mode, wake-up uses the same sources. For Deep power-down, only the dedicated WAKEUP pin (PIO0_16) triggers exit - a 50 ns LOW pulse wakes the device, enabling ultra-low standby current (<1 μA) in battery-powered applications using the LPC11E37FBD64/501.