NXP Semiconductors LPC11U36FBD64/401,

Overview

LPC11U36FBD64/401 from NXP Semiconductors is a 32-bit ARM Cortex-M0 microcontroller in LQFP64 package, operating up to 50 MHz with 96 kB flash, 10 kB SRAM (8 kB + 2 kB USB RAM), 4 kB EEPROM, full-speed USB 2.0 device controller, USART with RS-485/smart card support, and 54 GPIO pins. It targets USB-connected embedded control applications requiring low power and deterministic real-time response.

For engineers reviewing the LPC11U36FBD64/401 datasheet, LPC11U36FBD64/401 pinout, LPC11U36FBD64/401 application, or LPC11U36FBD64/401 equivalent, key selection criteria include USB device stack integration, 54-pin I/O scalability, 4 kB on-chip EEPROM for parameter storage, 10-bit ADC with 8-channel multiplexing, and support for deep-sleep wake-up via GPIO or USB activity.

Technical Context

The LPC11U36FBD64/401 implements an ARM Cortex-M0 core with NVIC, system tick timer, and NMI input selectable from multiple sources. Its memory subsystem includes 96 kB flash with sector/page erase, 4 kB byte-erasable EEPROM with ROM API, and 10 kB SRAM (8 kB general-purpose + 2 kB dedicated USB buffer).

Digital peripherals comprise one full-speed USB 2.0 device controller with SoftConnect, one USART supporting asynchronous/synchronous modes and ISO 7816-3 smart card interface, two SSP controllers, one Fast-mode Plus I²C-bus (1 Mbit/s), four timers (two 32-bit, two 16-bit), and a 10-bit ADC with eight input channels. Power management includes Sleep, Deep-sleep, Power-down, and Deep power-down modes with wake-up via GPIO, watchdog, or USB.

Key Specifications

Pinout & Package

LQFP64 package: plastic low-profile quad flat package, 64 leads, body size 10 × 10 × 1.4 mm, lead pitch 0.5 mm, RoHS-compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with LPC11U35FBD64/401, the LPC11U36FBD64/401 offers 32 kB more flash for complex USB protocols or bootloader features, while LPC11U37FBD64/501 adds dual-bank SRAM for I/O Handler offload-making the LPC11U36FBD64/401 the optimal balance of code space, USB capability, and cost for mid-tier USB peripherals.

Availability

LPC11U36FBD64/401 is available at Aetrix Electronics and suitable for USB peripheral design, industrial sensor interface, and medical data acquisition requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.

Supply support for LPC11U36FBD64/401 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 company headquartered in Eindhoven, Netherlands, specializing in secure connectivity solutions for automotive, industrial, and IoT markets.

The LPC11U3x product line was designed specifically for cost-sensitive, USB-enabled embedded applications requiring low power, small footprint, and rapid time-to-market-emphasizing integrated USB functionality and on-chip non-volatile storage.

FAQ

What is the maximum operating frequency of the LPC11U36FBD64/401?

The LPC11U36FBD64/401 operates at a maximum CPU frequency of 50 MHz, achievable using either the internal 12 MHz IRC oscillator with PLL multiplication or an external crystal oscillator between 1 MHz and 25 MHz. This frequency is fully supported across the specified industrial temperature range of −40 °C to +85 °C and 1.8 V to 3.6 V supply voltage.

Does the LPC11U36FBD64/401 include on-chip EEPROM, and what are its key characteristics?

Yes, the LPC11U36FBD64/401 integrates 4 kB of on-chip EEPROM that is byte-erasable and byte-programmable. It is accessed via ROM-based API functions, ensuring predictable timing and eliminating the need for external non-volatile memory. The EEPROM guarantees 100,000 write/erase cycles and 10-year data retention at 85 °C, making it suitable for storing calibration data, device identifiers, or user configurations.

How does the USB SoftConnect feature work on the LPC11U36FBD64/401?

The LPC11U36FBD64/401 implements USB SoftConnect via the PIO0_6/USB_CONNECT pin, which controls an internal 1.5 kΩ pull-up resistor on the D+ line. Firmware asserts this pin to connect the pull-up and initiate USB enumeration, allowing precise control over when the device appears on the bus-critical for reliable plug-and-play behavior and avoiding spurious enumeration during power-up sequences.

What low-power modes are supported by the LPC11U36FBD64/401, and how is wake-up managed?

The LPC11U36FBD64/401 supports four reduced-power modes: Sleep, Deep-sleep, Power-down, and Deep power-down. Wake-up from Deep-sleep and Power-down is possible via reset, selected GPIO pins, watchdog interrupt, or USB activity. In Deep power-down mode, wake-up is enabled only through the dedicated WAKEUP pin (PIO0_16), which accepts a LOW-going pulse as short as 50 ns to restore full operation.

Is the LPC11U36FBD64/401 pin-compatible with other members of the LPC11U3x family in LQFP64 package?

Yes, the LPC11U36FBD64/401 shares identical pinout and package dimensions (LQFP64, SOT314-2) with LPC11U35FBD64/401, LPC11U37FBD64/401, and LPC11U37FBD64/501. All share the same peripheral mapping, GPIO function assignments, and power/ground pin locations-enabling direct PCB footprint reuse across the family for scalable design migration.