NXP Semiconductors LPC54605J256BD100E

Overview

LPC54605J256BD100 from NXP Semiconductors is a 32-bit ARM Cortex-M4 microcontroller operating at up to 180 MHz, featuring 256 KB flash, 136 KB SRAM, dual USB (HS/FS) controllers with on-chip PHYs, and 64 GPIO pins in LQFP100 package. It targets low-power industrial control and USB-connected edge devices requiring deterministic real-time response.

For engineers reviewing the LPC54605J256BD100 datasheet, LPC54605J256BD100 pinout, LPC54605J256BD100 application, or LPC54605J256BD100 equivalent, key selection criteria include its 180 MHz CPU frequency, absence of Ethernet AVB and CAN FD (unlike LPC54628), LQFP100 footprint compatibility, and Flexcomm-peripheral flexibility for UART/SPI/I2C reconfiguration.

Technical Context

The LPC54605J256BD100 implements an ARM Cortex-M4 core with hardware FPU and MPU, executing instructions via a 3-stage pipeline with Harvard architecture and speculative branching support. Its clock system integrates a 12 MHz internal FRO (±1% accuracy), system PLL, and dedicated PLLs for USB and audio subsystems.

Digital peripherals include a 30-channel general-purpose DMA controller, SCTimer/PWM with 10 outputs and state-based logic, five 32-bit timers (four with capture/compare), and ten Flexcomm interfaces-each software-configurable as USART, SPI, I2C, or I2S (two support I2S). No Ethernet MAC or CAN FD blocks are present per device-specific ordering table.

Key Specifications

Pinout & Package

LQFP100 package: plastic low-profile quad flat package, 100 leads, body size 14 × 14 × 1.4 mm, exposed thermal pad (not electrically connected), lead pitch 0.5 mm.

Key Features

Applications

Equivalent & Alternatives

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

Compared with LPC54605J256BD100, LPC54606J256BD100 adds Ethernet and CAN 2.0 at identical package size but requires signal routing adjustments, while LPC54616J256ET180 trades package compatibility for significantly higher I/O count and external memory support - both serve distinct system-level requirements rather than drop-in replacements.

Availability

LPC54605J256BD100 is available at Aetrix Electronics and suitable for industrial HMIs, USB sensor gateways, and programmable logic controller I/O modules requiring stable component supply across multi-year production cycles.

Supply support for LPC54605J256BD100 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 headquarters in Eindhoven, Netherlands.

The LPC546xx family was designed for high-performance, low-power embedded applications demanding rich peripheral integration, advanced debug capabilities, and robust security features - targeting industrial control, human-machine interfaces, and USB-connected edge nodes.

FAQ

What is the maximum operating frequency of the LPC54605J256BD100?

The LPC54605J256BD100 operates at a maximum CPU frequency of 180 MHz, as confirmed in Table 2 of the official NXP datasheet (Rev. 2.8). This frequency is achieved using the system PLL driven by the internal 12 MHz FRO or external crystal source. The LPC54605J256BD100 does not support the 220 MHz mode available in the LPC54628 variant.

Does the LPC54605J256BD100 include Ethernet or CAN FD functionality?

No, the LPC54605J256BD100 excludes both Ethernet AVB and CAN FD modules. Per Table 2 in the NXP datasheet, this variant is classified under "LPC54605 devices (HS/FS USB)" with zero entries for Ethernet AVB and CAN FD. These features are present only in higher-tier variants like LPC54628J512ET180 or LPC54616J512BD208.

How many GPIO pins are available on the LPC54605J256BD100 in LQFP100 package?

The LPC54605J256BD100 provides 64 GPIO pins in its LQFP100 package, as specified in Table 2 of the NXP datasheet. This count reflects usable general-purpose I/O after accounting for dedicated functions such as USB_DP/DM, SWD, reset, and power pins - consistent across all LQFP100 variants in the LPC546xx family.

What USB capabilities does the LPC54605J256BD100 support?

The LPC54605J256BD100 integrates two independent USB controllers: one high-speed (480 Mbps) and one full-speed (12 Mbps), each with on-chip PHY. It supports both host and device roles, and includes ROM-based drivers for HID, CDC, MSC, and DFU - enabling plug-and-play USB functionality without external transceivers or driver development overhead.

Is the LPC54605J256BD100 pin-compatible with other LPC546xx LQFP100 variants?

Yes, the LPC54605J256BD100 shares identical LQFP100 pinout and mechanical dimensions with other BD100 variants (e.g., LPC54606J256BD100, LPC54616J512BD100), as confirmed by Figure 8 and Table 4 in the NXP datasheet. However, unused pins in the LPC54605J256BD100 may be assigned to Ethernet or CAN signals in functionally richer variants - requiring firmware and schematic review before substitution.