NXP Semiconductors LPC5526JBD64E

Overview

LPC5526JBD64E from NXP Semiconductors is a 32-bit Arm Cortex-M33 microcontroller operating at up to 150 MHz, featuring 256 KB on-chip flash, 144 KB SRAM, full-speed and high-speed USB interfaces, and integrated SDIO support - deployed in secure industrial edge nodes requiring real-time control and firmware integrity verification.

For engineers reviewing the LPC5526JBD64E datasheet, LPC5526JBD64E pinout, LPC5526JBD64E application, or LPC5526JBD64E equivalent, key selection considerations include its HTQFP64 package with 36 GPIOs, absence of CASPER crypto co-processor and PRINCE/PUF/Secure Boot modules (distinguishing it from LPC55S2x variants), and verified compatibility with LPC5528JBD64 and LPC5526JBD100 in shared peripheral routing and power domain architecture.

Technical Context

The LPC5526JBD64E implements a dual-bus AHB matrix architecture supporting concurrent access to flash, SRAM, and peripherals, with five 32-bit general-purpose timers, one SCTimer/PWM (8 inputs / 10 outputs), and a 24-bit Multi-Rate Timer for deterministic interrupt scheduling. Its Flexcomm interface subsystem provides nine configurable serial peripherals - each selectable as USART, SPI, I2C, or I2S - with dedicated FIFOs and fractional baud-rate generators.

Analog capability centers on a 16-bit, 1.0 Msamples/sec ADC with five differential channel pairs (10 single-ended), internal temperature sensor, and dual comparators; clocking includes dual FROs (96 MHz ±1% and 32 kHz ±2%), crystal oscillators (16–32 MHz and 32.768 kHz), and two PLLs enabling CPU operation at maximum frequency without external high-frequency crystals.

Key Specifications

Pinout & Package

Package: HTQFP64 (10 × 10 × 0.5 mm, pitch 0.5 mm, SOT855-5). Pinout validated per NXP datasheet Rev. 2.3 Table 3 (HTQFP64 column) and Figure 2 marking diagram.

Key Features

Applications

Equivalent & Alternatives

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

Compared with LPC5526JBD64E, LPC5528JBD64 offers double flash capacity for complex connectivity stacks, while LPC5526JBD100 provides 28 additional GPIOs and full peripheral accessibility - both retain identical security-disabled architecture and HTQFP64/HLQFP100 thermal profiles.

Availability

LPC5526JBD64E is available at Aetrix Electronics and suitable for industrial motor control, smart energy metering, medical point-of-care devices, and automotive body controllers requiring stable component supply across extended product lifecycles.

Supply support for LPC5526JBD64E 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 markets, with over 40 years of microcontroller innovation.

The LPC552x series targets cost-sensitive, high-reliability embedded applications where cryptographic acceleration is unnecessary - delivering Arm Cortex-M33 performance with simplified security architecture and broad peripheral integration.

FAQ

Does LPC5526JBD64E support Secure Boot or hardware encryption engines?

No. The LPC5526JBD64E excludes CASPER crypto co-processor, PRINCE flash encryption, PUF, and Secure Boot functionality - confirmed in Table 2 "Ordering Options" of the datasheet. It shares the same Arm Cortex-M33 core and peripheral set as the LPC55S2x family but omits all security modules. Designers requiring those features must select an LPC55S2x variant such as LPC55S26JBD64E.

What is the maximum ADC sampling rate achievable on LPC5526JBD64E?

The LPC5526JBD64E integrates a 16-bit ADC capable of 1.0 Msamples/sec with simultaneous conversions on two channels within a differential pair. This rate is sustained using internal clocking and supports triggered sampling via timer match events or external signals - verified in Section 2 "Features and benefits" and Figure 5 block diagram.

Which debug interface does LPC5526JBD64E use, and is SWD supported?

LPC5526JBD64E supports Serial Wire Debug (SWD) via dedicated SWCLK and SWO pins (PIO0_11 and PIO0_8 respectively), with Serial Wire Output trace capability. JTAG boundary scan is also supported using TRST/TCK/TMS/TDI/TDO pins (PIO0_2 to PIO0_6), as documented in Section 6.1 "Pin description" and Section 2 "Features and benefits".

Can LPC5526JBD64E operate without an external crystal?

Yes. The LPC5526JBD64E includes an internal 96 MHz Free Running Oscillator (FRO) trimmed to ±1% accuracy (0°C to 85°C), enabling full operation including USB full-speed device mode without external crystals. Crystal-less USB FS is explicitly supported per Section 2 "Features and benefits", and the FRO serves as primary system clock source.

What are the power supply requirements for LPC5526JBD64E?

LPC5526JBD64E operates from a single 1.8 V to 3.6 V supply, with internal DC-DC converter support for efficient voltage regulation. Brown-out detection (BOD) monitors VBAT_DCDC and triggers reset or interrupt at ~0.8 V, ensuring reliable startup and shutdown behavior - specified in Section 2 "Features and benefits" and Section 3 "Ordering information".