NXP Semiconductors LPC4323JBD144E

Overview

LPC4323JBD144E from NXP Semiconductors is a dual-core ARM Cortex-M4F/M0 microcontroller in LQFP144 package, operating up to 204 MHz with 512 kB flash (256 kB per bank), 104 kB SRAM, no Ethernet or LCD controller, and integrated USB 2.0 Host/Device interface - used in motor control and industrial automation systems requiring deterministic real-time processing and peripheral offload.

For engineers reviewing the LPC4323JBD144E datasheet, LPC4323JBD144E pinout, LPC4323JBD144E application, or LPC4323JBD144E equivalent, key selection criteria include dual-core partitioning, USB0-only connectivity, absence of Ethernet/LCD, 83 GPIO count, and J-grade temperature range (−40 °C to +105 °C) for harsh-environment deployment.

Technical Context

The LPC4323JBD144E integrates an ARM Cortex-M4F core with hardware FPU and MPU plus a companion Cortex-M0 coprocessor running at up to 204 MHz, enabling asymmetric task partitioning where the M0 handles peripheral management and the M4 executes time-critical algorithms. Memory architecture includes dual-bank flash for safe firmware updates and multiple SRAM blocks with independent power-down capability.

Digital peripherals include a State Configurable Timer (SCTimer/PWM) supporting complex waveform generation, two SSP controllers with DMA, C_CAN 2.0B, quad-SPI Flash Interface (SPIFI), and an External Memory Controller (EMC) supporting SDRAM/NOR. Analog features comprise two 10-bit ADCs (8 channels each, 400 kSamples/s) and one 10-bit DAC (400 kSamples/s).

Key Specifications

Pinout & Package

Package: LQFP144 (Plastic low-profile quad flat package; 144 leads; body 20 × 20 × 1.4 mm; SOT486-1).

Key Features

Applications

Equivalent & Alternatives

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

Compared with LPC4333JBD144 and LPC4322JBD144, the LPC4323JBD144E provides optimal balance of dual-bank flash safety, USB-only connectivity, and J-grade reliability - making it ideal for motor control and embedded power systems where Ethernet and LCD are superfluous.

Availability

LPC4323JBD144E is available at Aetrix Electronics and suitable for motor control, industrial automation, and white goods applications requiring stable component supply, extended temperature operation, and long-term industrial lifecycle support.

Supply support for LPC4323JBD144E 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 connectivity solutions for automotive, industrial, and IoT markets.

The LPC43xx product line delivers high-performance dual-core microcontrollers optimized for real-time embedded control, combining ARM Cortex-M4F and Cortex-M0 processors with rich analog/digital peripherals for industrial motor drives and smart power systems.

FAQ

What is the maximum operating frequency of the LPC4323JBD144E?

The LPC4323JBD144E operates at a maximum CPU frequency of 204 MHz for both the ARM Cortex-M4F and Cortex-M0 cores. This frequency is achieved using internal PLLs fed from the 12 MHz internal RC oscillator (trimmed to ±3 % accuracy) or an external crystal (1 MHz–25 MHz). The device maintains full peripheral functionality at this speed, including USB 2.0 high-speed operation and real-time ADC sampling at 400 kSamples/s.

Does the LPC4323JBD144E support Ethernet or LCD interfaces?

No, the LPC4323JBD144E does not support Ethernet or LCD interfaces. Per Table 2 in the official datasheet, this variant explicitly omits both the 10/100T Ethernet MAC and LCD controller. These peripherals are present only in higher-tier variants like LPC435x and LPC433x. The LPC4323JBD144E retains USB0, SPIFI, EMC, SCTimer/PWM, and dual ADC/DAC - making it purpose-built for control-centric applications without networking or display requirements.

How many GPIO pins are available on the LPC4323JBD144E?

The LPC4323JBD144E provides 83 GPIO pins, as confirmed in Table 2 of the datasheet under the "GPIO" column for type number LPC4323JBD144. These are distributed across ports P0–P1 and PA–PF, with each pin supporting up to eight configurable functions via the System Configuration Unit (SCU). All 83 pins are accessible in the LQFP144 package and include programmable pull-up/pull-down resistors and interrupt capability.

What is the flash memory configuration of the LPC4323JBD144E?

The LPC4323JBD144E contains 512 kB of on-chip flash memory organized as two equal banks of 256 kB each (Bank A and Bank B). This dual-bank architecture enables robust firmware updates via bank-swapping - allowing new code to be written to one bank while the system executes from the other. The configuration is fixed and cannot be reconfigured as a single 512 kB block; this differs from the LPC4322JBD144, which uses a single-bank layout.

Is the LPC4323JBD144E qualified for extended temperature operation?

Yes, the LPC4323JBD144E is rated for industrial extended temperature operation from −40 °C to +105 °C, indicated by the "J" suffix in the part number. This qualification is verified per NXP's standard industrial testing protocols and applies across all specified electrical parameters, including CPU operation at 204 MHz, USB 2.0 functionality, and ADC/DAC performance. The device includes brownout detection with four programmable thresholds and a dedicated RTC power domain supporting battery backup.