NXP Semiconductors LPC55S28JEV98E

Overview

LPC55S28JEV98E from NXP Semiconductors is a 32-bit Arm Cortex-M33 microcontroller with CASPER crypto co-processor, 512 KB flash, 256 KB SRAM, PRINCE real-time flash encryption, and dual USB (FS + HS) for secure embedded control in industrial gateways, IoT edge nodes, and smart sensors.

For engineers reviewing the LPC55S28JEV98E datasheet, LPC55S28JEV98E pinout, LPC55S28JEV98E application, or LPC55S28JEV98E equivalent, key selection criteria include its VFBGA98 package, 150 MHz CPU frequency, secure boot with RSA-2048/4096, PUF-based key generation, and 64 GPIOs with secure I/O capability.

Technical Context

The LPC55S28JEV98E implements Arm TrustZone for hardware-enforced isolation between secure and non-secure firmware domains, with dedicated secure boot ROM supporting SB2 image validation and debug authentication via RSA-2048/4096. Its CASPER engine accelerates ECC operations including point multiplication over NIST P-256 and P-384 curves.

It integrates two independent DMA controllers (DMA0: 23 channels; DMA1: 10 channels), a programmable logic unit (PLU) for glue logic offload, and a 16-bit 1.0 Msamples/sec ADC with simultaneous differential conversion on paired channels - all operating under unified clock and power management via integrated PMU and DC-DC converter.

Key Specifications

Pinout & Package

VFBGA98 package (7 mm × 7 mm, 0.5 mm pitch, SOT1982-1), 98-ball array with exposed thermal pad; supports industrial temperature range (−40 °C to +105 °C) and single 1.8–3.6 V supply.

Key Features

Applications

Equivalent & Alternatives

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

Compared with LPC55S28JEV98E, LPC55S69JBD100 offers identical security and performance in a larger QFP package for easier prototyping, while LPC55S26JEV98 removes CASPER and PUF to reduce BOM cost - both require design review for pin compatibility and feature alignment.

Availability

LPC55S28JEV98E is available at Aetrix Electronics and suitable for industrial automation, secure IoT edge deployment, and medical sensor integration requiring stable component supply across multi-year production cycles.

Supply support for LPC55S28JEV98E 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 focused on secure connectivity solutions for automotive, industrial, and IoT markets, with deep expertise in Arm-based microcontrollers and hardware security.

The LPC55S2x series was designed specifically for resource-constrained edge devices requiring certified security (TBSA), real-time responsiveness, and low-power operation - targeting applications where firmware integrity and cryptographic agility are mandatory.

FAQ

What is the maximum operating frequency of the LPC55S28JEV98E?

The LPC55S28JEV98E operates at a maximum CPU frequency of 150 MHz using its Arm Cortex-M33 core. This speed is achievable with PLL0 or PLL1 clock sources derived from internal FRO (12 MHz or 1 MHz), external crystal (16–32 MHz), or 32.768 kHz RTC oscillator. The FRO is factory-trimmed to ±1% accuracy over 0 °C to 85 °C for date codes 2041 and later.

Does the LPC55S28JEV98E support secure boot with hardware root-of-trust?

Yes, the LPC55S28JEV98E supports secure boot with hardware root-of-trust via its ROM bootloader, which validates SB2-format images using RSASSA-PKCS1-v1_5 signatures over SHA256 digests. It stores up to four revocable RoT public keys as SHA-256 hashes in protected flash and enforces anti-rollback through x.509 certificate serial number revocation.

What package type and pin count does the LPC55S28JEV98E use?

The LPC55S28JEV98E uses a VFBGA98 package (SOT1982-1): thin fine-pitch ball grid array with 98 solder balls arranged in a 7 mm × 7 mm body and 0.5 mm pitch. It includes an exposed thermal pad and supports industrial temperature range (−40 °C to +105 °C).

Can the LPC55S28JEV98E perform simultaneous ADC conversions?

Yes, the LPC55S28JEV98E's 16-bit ADC supports simultaneous conversions on two input channels belonging to the same differential pair (e.g., CH1A and CH1B). This enables phase-aligned sampling for applications like motor current sensing or energy metering where timing correlation between voltage and current measurements is critical.

What security accelerators are integrated into the LPC55S28JEV98E?

The LPC55S28JEV98E integrates CASPER (for ECC acceleration), PRINCE (for real-time AES-128 flash encryption), SHA2/AES-256 engines, TRNG, PUF (generating 64–4096-bit keys), and secure GPIO. These accelerators operate independently of the CPU, enabling cryptographic operations without compromising real-time task scheduling.