NXP Semiconductors LPC5506JBD64K

Overview

LPC5506JBD64 from NXP Semiconductors is a 32-bit ARM Cortex-M33 microcontroller designed for secure embedded control applications. It operates at up to 96 MHz, integrates 256 KB flash and 96 KB SRAM, features CAN 2.0 (not CAN FD), a 16-bit 2.0 Msamples/sec ADC with nine channels, and supports TrustZone-enabled secure boot without PUF or PRINCE encryption modules.

For engineers reviewing the LPC5506JBD64 datasheet, LPC5506JBD64 pinout, LPC5506JBD64 application, or LPC5506JBD64 equivalent, this page delivers verified specifications, HTQFP64 package details, real-world use cases in industrial control and secure IoT edge nodes, and two validated alternative parts with functional and security-level distinctions.

Technical Context

The LPC5506JBD64 implements ARMv8-M architecture with TrustZone for hardware-enforced memory isolation but omits PUF, PRINCE, and CASPER crypto accelerators found in LPC55S0x variants. Its security stack relies on ROM-based secure boot with RSA-2048/4096 signature verification and SHA256 hash validation, without on-the-fly flash encryption or silicon fingerprinting.

It provides nine Flexcomm interfaces (UART/SPI/I2C/I2S configurable per channel), five 32-bit general-purpose timers, one SCTimer/PWM, one RTC with wake-up capability, and a 24-bit multi-rate timer - all accessible via AHB/APB interconnects and supported by dual DMA controllers (23+10 channels) for peripheral offload.

Key Specifications

Pinout & Package

HTQFP64 package: plastic low-profile quad flat package with 64 leads, 0.5 mm pitch, 10 × 10 × 0.5 mm body, exposed thermal pad connected to VSS.

Key Features

Applications

Equivalent & Alternatives

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

Compared with LPC5506JBD64, LPC55S06JBD64 adds hardware crypto acceleration and CAN FD at identical pinout and memory size, while LPC5504JBD64 reduces flash and RAM capacity without altering security scope - enabling tiered product families with shared PCB layout.

Availability

LPC5506JBD64 is available at Aetrix Electronics and suitable for industrial control systems, secure smart metering endpoints, and medical sensor hubs requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for LPC5506JBD64 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.

The LPC550x series targets cost-optimized, security-aware embedded control applications where full crypto acceleration is unnecessary but TrustZone-based firmware isolation remains essential.

FAQ

Does LPC5506JBD64 support CAN FD?

No, LPC5506JBD64 implements CAN 2.0 only. Unlike the LPC55S0x variants, it lacks the CAN FD controller and associated high-speed transceiver support. CAN FD functionality is exclusive to LPC55S0x family members such as LPC55S06JBD64, which share the same HTQFP64 package but include additional hardware blocks.

What security features are included in LPC5506JBD64?

LPC5506JBD64 includes ARM TrustZone for memory isolation, secure boot with RSA-2048/4096 signature verification and SHA256 hash checking, and a ROM bootloader supporting CRC32 image integrity. It does not include PUF, PRINCE, or CASPER crypto engines - those are present only in LPC55S0x derivatives.

Is LPC5506JBD64 pin-compatible with LPC55S06JBD64?

Yes, LPC5506JBD64 and LPC55S06JBD64 share identical HTQFP64 packaging, pin count, pinout mapping, and mechanical dimensions. This allows direct PCB substitution where CAN FD and advanced crypto features are not required, though firmware must be recompiled to disable unused hardware modules.

What is the maximum ADC sampling rate of LPC5506JBD64?

The LPC5506JBD64 integrates a 16-bit ADC capable of 2.0 million samples per second (2.0 Msamples/sec). This rate applies to single-channel operation; simultaneous conversions on differential pairs maintain timing coherence but do not increase aggregate throughput beyond the per-channel limit.

Does LPC5506JBD64 include a floating-point unit (FPU)?

Yes, LPC5506JBD64 incorporates a single-precision IEEE 754-compliant Floating Point Unit (FPU) as part of its ARM Cortex-M33 core. This enables efficient execution of math-intensive algorithms such as digital filters, motor control equations, and sensor fusion routines without software emulation overhead.