NXP Semiconductors LPC43S70FET100E

Overview

LPC43S70FET100E from NXP Semiconductors is a dual-core ARM Cortex-M4/M0 microcontroller for industrial and embedded control applications, featuring 282 kB SRAM, dual high-speed USB 2.0 interfaces (one with on-chip HS PHY, one with ULPI), 10/100T Ethernet MAC with IEEE 1588 support, and an 80 MS/s 12-bit high-speed ADC. It operates at up to 204 MHz and integrates AES encryption, SCTimer/PWM, and SGPIO for real-time peripheral offload.

For engineers reviewing the LPC43S70FET100E datasheet, LPC43S70FET100E pinout, LPC43S70FET100E application, or LPC43S70FET100E equivalent, key selection considerations include its TFBGA100 package (49 GPIOs), absence of LCD and second USB PHY, presence of EMC and 3-channel 12-bit ADC, and dual-core deterministic partitioning between M4 and M0 subsystems.

Technical Context

The LPC43S70FET100E implements a heterogeneous dual-core architecture: the main ARM Cortex-M4F core handles compute-intensive tasks with hardware FPU and MPU, while a dedicated ARM Cortex-M0 coprocessor manages SPI/SGPIO peripherals via an isolated AHB matrix with 2 kB + 16 kB local SRAM. A second Cortex-M0 subsystem is absent in this variant per Table 2.

Its clock system uses three PLLs - one for CPU (up to 204 MHz), one dedicated to USB0, and one configurable for audio - fed by a 1–25 MHz crystal or 12 MHz ±1% IRC oscillator. Power management includes four low-power modes, RTC domain with battery backup, and brownout detection with four thresholds.

Key Specifications

Pinout & Package

Package: TFBGA100 (SOT926-1), plastic thin fine-pitch ball grid array with 100 balls, 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 ARM microcontroller applications.

Compared with LPC43S70FET100E, LPC4357FET100 removes security and USB PHY features for lower cost, while LPC43S50FET100 eliminates the M0 coprocessor to reduce software complexity - both retain Ethernet, USB1 ULPI, and ADCHS but require revalidation of real-time partitioning and secure boot workflows.

Availability

LPC43S70FET100E is available at Aetrix Electronics and suitable for industrial automation, smart metering, and embedded audio applications requiring stable component supply, long-term lifecycle support, and traceable sourcing.

Supply support for LPC43S70FET100E 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 markets.

The LPC43S series targets high-performance embedded control with dual-core determinism, hardware security, and rich analog/digital peripheral integration - designed specifically for industrial gateways, motor drives, and secure edge nodes.

FAQ

What is the maximum operating frequency of the LPC43S70FET100E?

The LPC43S70FET100E operates at a maximum CPU frequency of 204 MHz on both its ARM Cortex-M4F and ARM Cortex-M0 cores. This is achieved using an internal PLL driven by either a 1–25 MHz crystal oscillator or the 12 MHz ±1% internal RC oscillator. The frequency is confirmed in Section 1 and Table 2 of the official NXP datasheet Rev. 1.3.

Does the LPC43S70FET100E include a hardware floating-point unit?

Yes, the LPC43S70FET100E integrates a hardware floating-point unit (FPU) within its ARM Cortex-M4F core. This enables single-cycle floating-point operations essential for real-time signal processing, motor control algorithms, and FFT computation. The FPU is explicitly stated in the General Description and Features sections of the NXP datasheet.

How many ADC channels does the LPC43S70FET100E support, and what is their resolution and speed?

The LPC43S70FET100E includes one 12-bit high-speed ADC (ADCHS) with 6 channels and a maximum sampling rate of 80 MSamples/s. It does not include the 10-bit ADC0/ADC1 or DAC, which are exclusive to the LBGA256 package per Table 2. This configuration is verified in the "Ordering information" and "Analog peripherals" sections of the datasheet.

Is the LCD controller available on the LPC43S70FET100E?

No, the LCD controller is not available on the LPC43S70FET100E. According to Table 2 in the NXP datasheet, LCD functionality is only supported on the LBGA256 package variant (LPC43S70FET256). The TFBGA100 package (LPC43S70FET100) omits this peripheral entirely, as confirmed in the "Ordering options" summary.

What security features are implemented in the LPC43S70FET100E?

The LPC43S70FET100E includes a dedicated AES encryption/decryption engine with DMA support, programmable via a ROM-based API. It also provides two banks (256-bit total) of One-Time Programmable memory for secure AES key storage - one bank can hold an encrypted key for boot image decryption. These features are documented in Sections 2 and 5 of the NXP datasheet.