NXP Semiconductors LPC5506JHI48EL

Overview

LPC5506JHI48EL 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, includes CAN 2.0 interface (not CAN FD), and supports TrustZone-based isolation - deployed in industrial gateways requiring deterministic real-time control with firmware integrity enforcement.

For engineers reviewing the LPC5506JHI48EL datasheet, LPC5506JHI48EL pinout, LPC5506JHI48EL application, or LPC5506JHI48EL equivalent, key selection criteria include its HVQFN48 package footprint, PRINCE-enabled flash encryption, CASPER-assisted ECC acceleration, and 30 GPIOs with configurable analog/digital functions across 7 Flexcomm interfaces.

Technical Context

The LPC5506JHI48EL implements ARMv8-M architecture with TrustZone security extensions, enabling hardware-enforced memory and peripheral partitioning between secure and non-secure worlds. Its PRINCE module performs real-time AES-128 encryption/decryption of flash reads/writes, while CASPER co-processor accelerates ECC scalar multiplication for ECDSA and ECDH operations.

It features two DMA controllers (23+10 channels), a programmable logic unit (PLU) for glue logic offload, and a 16-bit 2.0 Msamples/sec ADC with simultaneous dual-channel conversion capability. The device lacks CAN FD support (only CAN 2.0), and uses a 48-pin HVQFN package limiting Flexcomm count to seven (vs. eight in HTQFP64 variants).

Key Specifications

Pinout & Package

HVQFN48 package: plastic thermal-enhanced very thin quad flat no-lead package, 48 terminals, 7 mm × 7 mm body, 0.4 mm pitch, exposed thermal pad requiring connection to VSS for thermal and electrical integrity.

Key Features

Applications

Equivalent & Alternatives

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

Compared with LPC5506JHI48EL, LPC55S06JHI48 adds TrustZone, PUF, and CAN FD at identical package size - making it suitable for certified secure systems - while LPC5502JHI48 reduces memory and removes security engines to lower BOM cost without changing I/O or timing behavior.

Availability

LPC5506JHI48EL is available at Aetrix Electronics and suitable for industrial automation, smart metering, and secure edge gateway designs requiring stable component supply, long-term lifecycle support, and traceable sourcing.

Supply support for LPC5506JHI48EL 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 LPC5500 series targets resource-constrained embedded systems requiring robust security foundations without premium cost - delivering TrustZone, PRINCE, and CASPER in scalable memory configurations for industrial control and edge intelligence.

FAQ

What is the maximum operating frequency of the LPC5506JHI48EL?

The LPC5506JHI48EL operates at a maximum CPU frequency of 96 MHz, achieved using the internal 96 MHz Free Running Oscillator (FRO) or PLL-synthesized clocks derived from internal or external sources. This frequency is sustained across the full industrial temperature range (−40 °C to +105 °C) and 1.8 V to 3.6 V supply voltage, with FRO accuracy maintained at ±1% over 0 °C to 85 °C and ±2% over the extended range.

Does the LPC5506JHI48EL support CAN FD or only classical CAN?

The LPC5506JHI48EL supports only CAN 2.0 (Classical CAN) - not CAN FD. This is explicitly confirmed in Table 2 of the datasheet, which lists "CAN2.0" under the CAN FD column for all LPC550x variants. In contrast, LPC55S0x variants (e.g., LPC55S06JHI48) include CAN FD support. Designers requiring CAN FD must select an S-series part.

How many Flexcomm interfaces does the LPC5506JHI48EL provide?

The LPC5506JHI48EL provides seven Flexcomm interfaces (Flexcomm 0 through 6), as specified in the datasheet note on page 7: "HVQFN48: up to 7 Flexcomm interfaces (UART up to 7, I2C up to 7, I2S up to 4 and SPI up to 3) + 1 HS SPI." This is one fewer than the HTQFP64 variant, which supports eight Flexcomm interfaces.

What security features are included in the LPC5506JHI48EL?

The LPC5506JHI48EL includes PRINCE flash encryption, CASPER crypto co-processor for ECC acceleration, True Random Number Generator (TRNG), Physical Unclonable Function (PUF), SHA2/AES-256 engines, and secure boot with RSA-2048/4096 verification. However, it omits TrustZone and PUF-based secure boot enforcement - unlike the S-series - meaning secure world isolation and DICE-compliant attestation are not available.

What is the ADC resolution and sampling rate of the LPC5506JHI48EL?

The LPC5506JHI48EL integrates a 16-bit successive approximation register (SAR) ADC capable of up to 2.0 million samples per second (Msamples/sec). It supports seven analog input channels (five differential pairs), simultaneous dual-channel conversion, and internal temperature sensing. The ADC operates independently of CPU load via DMA-triggered acquisition and supports both internal and external trigger sources.