NXP Semiconductors LPC5528JBD64E

Overview

LPC5528JBD64E from NXP Semiconductors is a 32-bit Arm Cortex-M33 microcontroller for secure embedded applications, operating at up to 150 MHz with 512 KB flash, 256 KB SRAM, and full-speed + high-speed USB support. It integrates a 16-bit 1.0 Msamples/sec ADC, SCTimer/PWM, PRINCE flash encryption, and SDIO interface - deployed in industrial gateways requiring real-time control and firmware integrity.

For engineers reviewing the LPC5528JBD64E datasheet, LPC5528JBD64E pinout, LPC5528JBD64E application, or LPC5528JBD64E equivalent, key selection criteria include its HTQFP64 package, absence of CASPER crypto co-processor and PUF, secure boot capability via RSA-2048/4096, and 36 GPIOs with Flexcomm serial peripheral flexibility.

Technical Context

The LPC5528JBD64E implements an Arm Cortex-M33 core with MPU, FPU, DSP, and ETM, running at up to 150 MHz using PLL0/PLL1 clock sources derived from internal FRO (12 MHz or 1 MHz), external crystal (16–32 MHz), or RTC oscillator (32.768 kHz). It lacks the CASPER crypto accelerator and PUF controller found in LPC55S2x variants but retains SHA2-AES hardware acceleration and PRINCE flash encryption.

Its peripheral set includes nine Flexcomm interfaces (configurable as USART/SPI/I2C/I2S), dual USB controllers (FS + HS), SDIO, five 32-bit general-purpose timers, SCTimer/PWM with 10 outputs, RTC with wake-up capability, and a 16-bit ADC supporting simultaneous differential conversions. Power management supports Sleep, Deep-sleep, Power-down, and Deep power-down modes with wake-up via RTC, Micro-Tick Timer, or GPIO interrupts.

Key Specifications

Pinout & Package

Package: HTQFP64 (plastic low-profile quad flat package, 64 leads, 10 × 10 × 0.5 mm pitch, SOT855-5).

Key Features

Applications

Equivalent & Alternatives

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

Compared with LPC5528JBD64E, LPC55S28JBD64 adds CASPER and PUF for advanced cryptographic operations but shares identical package, pinout, and core peripherals; LPC5526JBD64 reduces memory resources while retaining all security and interface capabilities - enabling scalable design across performance tiers.

Availability

LPC5528JBD64E is available at Aetrix Electronics and suitable for industrial automation, smart metering, and IIoT edge gateway designs requiring stable component supply, long-term lifecycle assurance, and secure firmware update capability.

Supply support for LPC5528JBD64E 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 LPC552x product line targets cost-optimized, high-security embedded applications where cryptographic acceleration is not required but robust flash encryption, secure boot, and industrial-grade reliability remain essential.

FAQ

What is the maximum operating frequency of the LPC5528JBD64E?

The LPC5528JBD64E operates at a maximum CPU frequency of 150 MHz, achieved using PLL0 or PLL1 clock sources derived from internal FRO (12 MHz or 1 MHz), external crystal (16–32 MHz), or RTC oscillator (32.768 kHz). This frequency is fully supported across the −40 °C to +105 °C temperature range and 1.8 V to 3.6 V supply voltage, with no derating required under specified conditions.

Does the LPC5528JBD64E include a hardware crypto accelerator like CASPER?

No, the LPC5528JBD64E does not include the CASPER crypto co-processor. This distinguishes it from the LPC55S2x series. However, it retains SHA2-AES hardware acceleration and PRINCE flash encryption, providing strong symmetric cryptographic capability for secure boot and data protection without asymmetric algorithm acceleration.

What package type and pin count does the LPC5528JBD64E use?

The LPC5528JBD64E uses the HTQFP64 package: a plastic low-profile quad flat package with 64 leads, 10 × 10 × 0.5 mm body dimensions, and 0.5 mm pitch (SOT855-5). This package is pin-compatible with other LPC552x/LPC55S2x variants in the same footprint, enabling hardware reuse across security-tier variants.

How many GPIO pins are available on the LPC5528JBD64E?

The LPC5528JBD64E provides 36 general-purpose I/O pins. These support multiple functions including digital I/O, analog inputs (ADC/ACMP), serial interfaces (Flexcomm), USB, SDIO, and secure GPIO configurations. All GPIO registers reside on the AHB bus for low-latency access, and up to eight can be configured as pin interrupts with edge-triggered sensitivity.

Is the LPC5528JBD64E supported for secure boot with RSA-4096 keys?

Yes, the LPC5528JBD64E supports secure boot using RSA-2048 and RSA-4096 public keys, validated against x.509 certificates. It implements RSASSA-PKCS1-v1_5 signature verification of SHA256 digests and supports up to four revocable Root of Trust keys stored in protected flash, along with anti-rollback via image key certificate revocation using the Serial Number field.