NXP Semiconductors LPC1768FET100Y

Overview

LPC1768FET100Y from NXP Semiconductors is a 32-bit ARM Cortex-M3 microcontroller in TFBGA100 package, operating at up to 100 MHz with 512 kB flash, 64 kB SRAM, dual CAN 2.0B controllers, USB 2.0 Device/Host/OTG, Ethernet MAC, and 70 GPIOs - deployed in industrial motor control and networked white goods.

For engineers reviewing the LPC1768FET100Y datasheet, LPC1768FET100Y pinout, LPC1768FET100Y application, or LPC1768FET100Y equivalent, key selection criteria include TFBGA100 footprint compatibility, integrated Ethernet+USB+CAN coexistence, 12-bit ADC with DMA support, RTC with battery backup, and Cortex-M3 MPU-enforced memory protection for safety-critical firmware.

Technical Context

The LPC1768FET100Y implements a Harvard-architecture Cortex-M3 core with 3-stage pipeline, internal prefetch unit, and NVIC-integrated interrupt handling - enabling deterministic real-time response for motor control and industrial communication stacks. Its multilayer AHB matrix decouples CPU, GPDMA, Ethernet MAC, and USB controllers to eliminate arbitration stalls.

Peripheral integration includes dedicated DMA channels for UART, ADC, I2S, and USB; configurable open-drain GPIOs supporting I²C-bus compliance; and hardware-accelerated PWM blocks with quadrature encoder interface - all accessible via APB bridges with independent clock dividers for dynamic power scaling.

Key Specifications

Pinout & Package

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

Key Features

Applications

Equivalent & Alternatives

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

Compared with LPC1769FBD100, LPC1768FET100Y trades 20 MHz CPU headroom and QFP assembly convenience for superior thermal dissipation and space efficiency in volume production; versus LPC1766FBD100, it adds full Ethernet capability at no package size penalty.

Availability

LPC1768FET100Y is available at Aetrix Electronics and suitable for industrial motor control, smart energy metering, and networked white goods requiring stable component supply across multi-year production cycles.

Supply support for LPC1768FET100Y 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 applications.

The LPC176x series was designed as a high-integration, low-power ARM Cortex-M3 MCU family targeting industrial control, motor drive, and protocol gateway applications with Ethernet, USB, and CAN coexistence.

FAQ

What is the maximum CPU frequency supported by the LPC1768FET100Y?

The LPC1768FET100Y operates at a maximum CPU frequency of 100 MHz. This is confirmed in Table 2 of the official NXP datasheet (Rev. 9.10), which explicitly lists "100 MHz" under "Maximum CPU operating frequency (MHz)" for all LPC1768 variants including LPC1768FET100Y. The Cortex-M3 core achieves this using its internal PLL, which can be driven from the main oscillator, internal RC oscillator, or RTC oscillator.

Does the LPC1768FET100Y include an Ethernet MAC and does it support RMII?

Yes, the LPC1768FET100Y includes a fully integrated Ethernet MAC with RMII interface support. As stated in Section 2 ("Features and benefits") and Table 2 of the datasheet, Ethernet is marked "yes" for LPC1768FET100Y. Pin allocations in Table 4 (e.g., P1[0], P1[1], P1[4], P1[8]–P1[17]) confirm dedicated RMII signals including TXD0/TXD1, TX_EN, CRS, RXD0/RXD1, RX_ER, REF_CLK, MDC, and MDIO - all present and functional in the TFBGA100 package.

What are the key differences between the LPC1768FET100Y and LPC1769FBD100?

The LPC1768FET100Y and LPC1769FBD100 share identical peripheral sets (Ethernet, USB, CAN, ADC, DAC, etc.) and memory (512 kB flash, 64 kB SRAM), but differ in CPU speed (100 MHz vs. 120 MHz) and package (TFBGA100 vs. LQFP100). The LPC1769FBD100 also supports an optional Ethernet PHY interface not present in LPC1768FET100Y. Both are pin-compatible with the LPC236x series, but not with each other due to differing package types and ball/pad layouts.

Is the DAC available on the LPC1768FET100Y, and what is its resolution?

Yes, the LPC1768FET100Y includes a 10-bit Digital-to-Analog Converter (DAC). Table 2 explicitly marks "DAC" as "yes" for LPC1768FET100Y, and Section 2 confirms it features "10-bit DAC with dedicated conversion timer and DMA support." The DAC output is available on pin P0[26]/AOUT, and its resolution is fixed at 10 bits - delivering 1024 distinct voltage levels across the VDDA reference range.

How many general-purpose I/O pins does the LPC1768FET100Y provide, and are they configurable for open-drain operation?

The LPC1768FET100Y provides up to 70 general-purpose I/O pins, as confirmed in Section 2 ("Features and benefits") and Table 2. All GPIOs support configurable pull-up/down resistors and a new, configurable open-drain operating mode - explicitly documented for I²C0 pins (P0[27]/SDA0 and P0[28]/SCL0) and applicable to other GPIOs via the pin connect block and GPIO direction register settings.