NXP Semiconductors LPC4315JBD144551

Overview

LPC4315JBD144 from NXP Semiconductors is a dual-core ARM Cortex-M4/M0 microcontroller in LQFP144 package, operating up to 204 MHz with 768 kB flash (384 kB per bank), 136 kB SRAM, and no Ethernet or LCD controller. It integrates dual USB controllers (one Host/Device/OTG with on-chip HS PHY, one Host/Device with ULPI interface), quad SPI Flash Interface (SPIFI), SCT timer subsystem, SGPIO, EMC, two 10-bit ADCs (400 kS/s), one 10-bit DAC (400 kS/s), and motor control PWM - deployed in industrial motor drives and embedded power management systems.

For engineers reviewing the LPC4315JBD144 datasheet, LPC4315JBD144 pinout, LPC4315JBD144 application, or LPC4315JBD144 equivalent, key selection considerations include its dual-core asymmetric processing capability, absence of Ethernet/LCD peripherals, 144-pin LQFP thermal and layout compatibility, and support for real-time deterministic control via SCT and GIMA cross-triggering.

Technical Context

The LPC4315JBD144 implements a tightly coupled dual-processor architecture: the Cortex-M4 core handles high-performance computation and signal processing (with hardware FPU and MPU), while the Cortex-M0 co-processor manages real-time I/O offload and peripheral scheduling at up to 204 MHz. Both cores share memory space but operate independently with separate debug interfaces (SWD/JTAG).

Its peripheral subsystem relies on the Global Input Multiplexer Array (GIMA) to route events between timers, ADCs, and SCT, enabling precise hardware-synchronized state transitions. The External Memory Controller (EMC) supports SRAM, NOR flash, and SDRAM, and the SPIFI provides up to 52 MB/s quad-SPI boot and execution capability - critical for deterministic firmware loading in safety-critical motor control loops.

Key Specifications

Pinout & Package

Package: LQFP144 (20 × 20 × 1.4 mm, SOT486-1), lead pitch 0.5 mm, exposed pad not present. Suitable for industrial PCB assembly with standard reflow profiles and thermal management via top-side copper pour.

Key Features

Applications

Equivalent & Alternatives

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

Compared with LPC4333JBD144 and LPC4325JBD144, the LPC4315JBD144 uniquely retains motor control PWM and full USB0 OTG functionality within its 768 kB/136 kB memory configuration - making it optimal for cost-constrained, real-time motor and power conversion applications requiring field-upgradable firmware and hardware-timed actuation.

Availability

LPC4315JBD144 is available at Aetrix Electronics and suitable for industrial motor drives, smart power metering, embedded audio gateways, and RFID reader controllers requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for LPC4315JBD144 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 specializing in secure connectivity solutions for automotive, industrial, and IoT markets, with leadership in ARM-based microcontrollers and edge processing.

The LPC4300 series was designed for high-integrity embedded control applications demanding dual-core determinism, hardware-accelerated peripherals, and robust security features - targeting industrial automation, energy infrastructure, and appliance control.

FAQ

What is the maximum operating frequency of the LPC4315JBD144?

The LPC4315JBD144 operates at a maximum CPU frequency of 204 MHz for both the ARM Cortex-M4 and Cortex-M0 cores. This frequency is achieved using internal PLLs fed from either the 1–25 MHz crystal oscillator or the 12 MHz internal RC oscillator (trimmed to ±2 % accuracy). The LPC4315JBD144 maintains this performance across its full industrial temperature range of -40 °C to +105 °C.

Does the LPC4315JBD144 include an Ethernet MAC?

No, the LPC4315JBD144 does not include an Ethernet MAC. According to Table 2 in the official NXP datasheet, Ethernet is explicitly marked as "no" for this part number. This distinguishes it from higher-tier variants like LPC4357 or LPC4337. Designers requiring Ethernet must select an alternative variant or implement external MAC+PHY solutions - the LPC4315JBD144 instead emphasizes USB, SPIFI, EMC, and motor control peripherals.

How many ADC channels does the LPC4315JBD144 support?

The LPC4315JBD144 integrates two independent 10-bit ADCs (ADC0 and ADC1), each supporting up to eight input channels - for a total of 16 configurable analog inputs. Both ADCs operate at a maximum conversion rate of 400 kSamples/s with DMA support, enabling simultaneous sampling for multi-axis current/voltage monitoring in motor control applications. Channel selection and sequencing are fully programmable via register configuration.

What package type is used for the LPC4315JBD144?

The LPC4315JBD144 uses the LQFP144 package (plastic low-profile quad flat package with 144 leads), measuring 20 mm × 20 mm × 1.4 mm (SOT486-1). It features 0.5 mm lead pitch and is RoHS-compliant. This package provides mechanical robustness and thermal performance suitable for industrial PCBs, with all power and ground pins distributed to minimize noise coupling in mixed-signal operation.

Is the LPC4315JBD144 pin-compatible with other LPC43xx devices in LQFP144?

Yes, the LPC4315JBD144 shares identical pinout and footprint with all other LPC43xx variants offered in the LQFP144 package (e.g., LPC4333JBD144, LPC4325JBD144, LPC4313JBD144). Pin functions are consistent across the family per the LQFP144 column in Table 3 of the datasheet, enabling hardware reuse and migration paths - though peripheral availability (e.g., Ethernet, LCD, USB OTG) varies by part number and must be verified in software initialization.