NXP Semiconductors LPC4323JET100E

Overview

LPC4323JET100E from NXP Semiconductors is a dual-core ARM Cortex-M4F/M0 microcontroller designed for real-time embedded control with integrated USB 2.0 Host/Device capability, 512 kB flash (256 kB per bank), 104 kB SRAM, and operation up to 204 MHz. It supports industrial motor control, power management, and e-metering applications requiring deterministic processing, peripheral offload, and robust I/O.

For engineers reviewing the LPC4323JET100E datasheet, LPC4323JET100E pinout, LPC4323JET100E application, or LPC4323JET100E equivalent, key selection criteria include its TFBGA100 package, absence of Ethernet/LCD, dual USB support (one with on-chip PHY, one ULPI-only), and 49 GPIOs - critical for compact, cost-sensitive industrial controllers.

Technical Context

The LPC4323JET100E implements a tightly coupled dual-core architecture: the Cortex-M4F core handles high-performance signal processing and real-time tasks with hardware FPU and MPU, while the Cortex-M0 co-processor manages peripheral handling and system control at up to 204 MHz. Both cores share memory via AHB multilayer matrix and coordinate through event router and GIMA crossbar.

It integrates configurable peripherals including State Configurable Timer (SCTimer/PWM), Serial GPIO (SGPIO), Quad SPI Flash Interface (SPIFI), two C_CAN 2.0B controllers, and dual 10-bit ADCs (400 kSamples/s, 4 channels total). Clocking uses three PLLs - one for CPU, one for USB, one for audio - with crystal oscillator (1–25 MHz) and 12 MHz IRC.

Key Specifications

Pinout & Package

Package: TFBGA100 (SOT926-1), plastic thin fine-pitch ball grid array, 100 balls, 0.5 mm pitch, body size 9 mm × 9 mm × 0.7 mm.

Key Features

Applications

Equivalent & Alternatives

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

Compared with LPC4333JET100 and LPC4322JET100, the LPC4323JET100 offers optimal balance for cost-constrained industrial controllers: retaining dual-bank flash for robust firmware updates and USB dual-role capability, while removing unused Ethernet and LCD logic to reduce die size and power consumption.

Availability

LPC4323JET100E is available at Aetrix Electronics and suitable for industrial motor control, smart energy metering, embedded audio gateways, and power management units requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for LPC4323JET100E 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 headquartered in Eindhoven, Netherlands, specializing in secure connectivity solutions for automotive, industrial, and IoT applications.

The LPC43xx family was designed to deliver scalable dual-core performance for real-time industrial control, combining Cortex-M4F computational power with Cortex-M0 peripheral management - enabling deterministic response, functional safety partitioning, and reduced software complexity.

FAQ

What is the maximum operating frequency of the LPC4323JET100E?

The LPC4323JET100E operates at a maximum CPU frequency of 204 MHz for both the ARM Cortex-M4F and Cortex-M0 cores. This frequency is achieved using the on-chip PLLs with an external crystal (1–25 MHz) or the internal 12 MHz RC oscillator. The actual sustained frequency depends on voltage (2.4–3.6 V) and thermal conditions within the −40 °C to +105 °C industrial range.

Does the LPC4323JET100E support Ethernet connectivity?

No, the LPC4323JET100E does not support Ethernet. Per Table 2 in the official datasheet, Ethernet is explicitly marked "no" for this variant. The part lacks the necessary RMII/MII pin assignments and internal MAC interface logic - unlike LPC4333JET100 or LPC4353JET256. USB and CAN are the primary communication interfaces.

How many GPIO pins are available on the LPC4323JET100E in the TFBGA100 package?

The LPC4323JET100E provides 49 GPIO pins in the TFBGA100 package. These are distributed across ports P0, P1, and PA–PF, with each pin supporting up to eight multiplexed functions (e.g., UART, SSP, I2S, SCTimer). Pin count is confirmed in Table 2 and matches the "GPIO" column value for LPC4323JET100 in the ordering information section.

What USB capabilities does the LPC4323JET100E offer?

The LPC4323JET100E features two USB 2.0 interfaces: USB0 supports Host/Device/OTG with an integrated high-speed PHY; USB1 supports Host/Device mode only via ULPI interface - requiring an external high-speed PHY. Neither interface supports USB charging detection or proprietary vendor extensions beyond standard USB 2.0 specification compliance.

Is the LCD controller available on the LPC4323JET100E?

No, the LCD controller is not available on the LPC4323JET100E. As specified in Table 2, the "LCD" column shows "no" for this part number. The LCD controller is only present on higher variants like LPC4357/53 and is physically absent from the LPC4323 silicon - meaning no related pins (e.g., LCD_VD0–VD23, LCD_PWR, LCD_BIAS) are bonded out in the TFBGA100 package.