NXP Semiconductors LPC55S16JBD64Y

Overview

LPC55S16JBD64Y from NXP Semiconductors is a 32-bit Arm Cortex-M33 microcontroller with TrustZone security, PRINCE flash encryption, CASPER crypto acceleration, 256 KB on-chip flash, 96 KB SRAM, CAN FD, USB full-speed and high-speed interfaces, and a 16-bit 2.0 Msamples/sec ADC - deployed in secure industrial gateways requiring real-time control, encrypted firmware updates, and multi-protocol connectivity.

For engineers reviewing the LPC55S16JBD64Y datasheet, LPC55S16JBD64Y pinout, LPC55S16JBD64Y application, or LPC55S16JBD64Y equivalent, key selection criteria include TrustZone-enforced memory isolation, PRINCE-enabled over-the-air secure flash updates, CASPER-accelerated ECC operations, and HTQFP64 package compatibility with space-constrained industrial PCB layouts.

Technical Context

The LPC55S16JBD64Y implements Arm TrustZone to enforce hardware-isolated secure and non-secure execution environments, with PRINCE performing real-time AES-128 encryption/decryption of flash reads and writes. Its CASPER co-processor offloads elliptic curve cryptography (ECC) operations including point multiplication and modular arithmetic, reducing CPU load during TLS handshake or secure boot verification.

It integrates two DMA controllers (23-channel DMA0 and 10-channel DMA1), supports crystal-less USB full-speed device operation via software library TN00065, and delivers deterministic timing via five 32-bit general-purpose timers plus an 8-input/10-output SCTimer/PWM with 16 capture/match registers and state-machine programmability.

Key Specifications

Pinout & Package

HTQFP64 package: 64-pin plastic low-profile quad flat package with exposed thermal pad, 0.5 mm pitch, 10 mm × 10 mm body, RoHS-compliant, rated for industrial temperature range (−40 °C to +105 °C).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar Arm Cortex-M33 microcontroller applications.

Compared with LPC55S06JBD64, the LPC55S16JBD64Y adds PUF, CASPER, and PRINCE for end-to-end firmware protection - critical for field-upgradable devices. Versus RA6M5DBGLF00#AC0, it delivers superior ECC throughput and DICE-aligned device identity, albeit with smaller memory footprint.

Availability

LPC55S16JBD64Y is available at Aetrix Electronics and suitable for industrial automation, automotive diagnostics, smart energy metering, and medical IoT sensor hubs requiring stable component supply across extended product lifecycles.

Supply support for LPC55S16JBD64Y 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 edge computing, automotive radar, and industrial connectivity solutions, with headquarters in Eindhoven, Netherlands.

The LPC55S1x series targets secure, low-power embedded applications demanding hardware-rooted trust, real-time control, and multi-protocol connectivity - designed specifically for industrial gateways, automotive tools, and regulated medical devices.

FAQ

What is the maximum operating frequency of the LPC55S16JBD64Y?

The LPC55S16JBD64Y runs its Arm Cortex-M33 core at up to 150 MHz, supported by PLL0/PLL1 clock synthesis from internal FRO or external crystal sources. This frequency is achievable across the full industrial temperature range (−40 °C to +105 °C) and 1.8–3.6 V supply, with flash accelerator enabling zero-wait-state execution at peak speed. The LPC55S16JBD64Y maintains timing integrity under voltage and thermal stress via built-in frequency measurement unit and adaptive clock gating.

Does the LPC55S16JBD64Y support crystal-less USB full-speed device operation?

Yes, the LPC55S16JBD64Y supports crystal-less USB full-speed device operation using its internal 48 MHz FRO clock and software library TN00065. This eliminates the need for an external 48 MHz crystal, reducing BOM cost and board area - particularly valuable in space-constrained designs like handheld diagnostic tools. The LPC55S16JBD64Y maintains USB specification compliance through precise FRO trimming (±1% over 0–85 °C) and dynamic clock calibration during enumeration.

How many GPIO pins does the LPC55S16JBD64Y provide in the HTQFP64 package?

The LPC55S16JBD64Y in HTQFP64 package provides 36 general-purpose I/O pins, as confirmed in Table 2 of the datasheet. These GPIOs support multiple functions including ADC inputs, comparator channels, Flexcomm peripheral signals, and secure GPIO capability. Each pin is individually configurable via IOCON registers for pull-up/down, drive strength, and slew rate, with eight pins selectable as pin interrupts (PINT) and two grouped as logical AND/OR interrupts (GINT).

What security features distinguish the LPC55S16JBD64Y from standard Cortex-M33 MCUs?

The LPC55S16JBD64Y integrates hardware security features beyond baseline Cortex-M33: PRINCE for real-time flash encryption, CASPER for ECC acceleration, PUF for silicon-unique key generation, DICE-compliant device identity, and TrustZone-enforced secure boot with revocable root-of-trust keys. Unlike generic M33 implementations, the LPC55S16JBD64Y delivers TBSA compliance, secure debug authentication (RSA-2048/4096), and anti-rollback protection - making it suitable for PSA Certified Level 3 and Common Criteria EAL4+ deployments.

Is the LPC55S16JBD64Y pin-compatible with other members of the LPC55S1x family in HTQFP64?

Yes, the LPC55S16JBD64Y is pin-compatible with all LPC55S1x and LPC551x variants offered in the HTQFP64 package (e.g., LPC55S14JBD64, LPC5516JBD64), sharing identical pin numbering, electrical characteristics, and mechanical footprint. This allows hardware reuse across performance tiers - for example, upgrading from 128 KB to 256 KB flash without PCB redesign. The LPC55S16JBD64Y maintains functional consistency in GPIO mapping, peripheral signal routing, and power/ground pin locations per SOT 855-5 specification.