NXP Semiconductors LPC1759FBD80K

Overview

LPC1759FBD80K from NXP Semiconductors is a 32-bit ARM Cortex-M3 microcontroller operating at up to 120 MHz, featuring 512 kB flash, 64 kB SRAM, dual CAN 2.0B interfaces, USB 2.0 Host/Device/OTG with on-chip PHY, and 52 GPIO pins. It integrates a 12-bit ADC (200 kHz), 10-bit DAC, motor control PWM, quadrature encoder interface, and RTC with battery backup - deployed in industrial networking and motor control systems.

For engineers reviewing the LPC1759FBD80K datasheet, LPC1759FBD80K pinout, LPC1759FBD80K application, or LPC1759FBD80K equivalent, key selection criteria include its 120 MHz CPU frequency, dual-CAN + USB OTG + I2S support, LQFP80 package compatibility, and absence of Ethernet MAC - distinguishing it from LPC1758FBD80K.

Technical Context

The LPC1759FBD80K implements an ARM Cortex-M3 core with Harvard architecture, 3-stage pipeline, and integrated MPU supporting eight memory regions. Its AHB multilayer matrix enables concurrent access by CPU, GPDMA, USB, and peripherals without arbitration delay.

Peripheral integration includes two SSP controllers with FIFO and DMA support, four UARTs with fractional baud rate generation and RS-485/IrDA capability, two I²C-bus interfaces (400 kbit/s fast mode), and an I²S interface with fractional rate control - all accessible via the GPDMA controller for zero-CPU-load data transfers.

Key Specifications

Pinout & Package

Package: 80-pin LQFP (SOT315-1), 12 mm × 12 mm × 1.4 mm body, lead pitch 0.5 mm, RoHS-compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with LPC1759FBD80K, LPC1758FBD80K trades 20 MHz CPU speed and I²S/DAC for integrated Ethernet, while LPC1769FBD100K extends both Ethernet and audio capability in a larger package - making LPC1759FBD80K optimal for space-constrained, high-speed, dual-CAN + USB + audio applications without Ethernet.

Availability

LPC1759FBD80K is available at Aetrix Electronics and suitable for industrial networking, motor control, and eMetering applications requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.

Supply support for LPC1759FBD80K 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 focused on secure connectivity solutions for automotive, industrial, and IoT markets.

The LPC17xx family delivers high-performance, low-power ARM Cortex-M3 MCUs targeting industrial automation, motor control, and protocol-rich embedded systems - emphasizing real-time determinism, peripheral integration, and robust debug infrastructure.

FAQ

What is the maximum CPU clock frequency supported by the LPC1759FBD80K?

The LPC1759FBD80K supports a maximum CPU clock frequency of 120 MHz, achieved using the on-chip PLL driven by the main oscillator, internal RC oscillator, or RTC oscillator. This is confirmed in Table 2 of the official NXP datasheet Rev. 8.7 and distinguishes the LPC1759FBD80K from lower-speed variants like the LPC1758FBD80K (100 MHz). The flash accelerator enables zero-wait-state operation at this frequency.

Does the LPC1759FBD80K include an Ethernet MAC?

No, the LPC1759FBD80K does not include an Ethernet MAC. According to Table 2 in the NXP datasheet Rev. 8.7, "Ethernet" is marked "no" for LPC1759FBD80K, while it is "yes" for LPC1758FBD80K. The LPC1759FBD80K retains USB 2.0 Host/Device/OTG, dual CAN, I²S, and DAC - making it suitable for applications prioritizing high-speed serial connectivity over wired Ethernet.

Which analog-to-digital converter specifications apply to the LPC1759FBD80K?

The LPC1759FBD80K features a 12-bit ADC with six input channels (AD0[2]–AD0[7]), capable of conversion rates up to 200 kHz and multiple result registers. It supports hardware triggering via timers and DMA transfers. This ADC is shared across the LPC1759/58/56/54 family and is explicitly confirmed for LPC1759FBD80K in Section 2 "Features and benefits" and Table 2 of the datasheet.

What package type and pin count does the LPC1759FBD80K use?

The LPC1759FBD80K uses an 80-pin LQFP package (SOT315-1), measuring 12 mm × 12 mm × 1.4 mm with 0.5 mm lead pitch. This is documented in Table 1 ("Ordering information") and confirmed in the pin configuration diagram (Fig 2) and pin description table (Table 4) of the NXP LPC1759/58/56/54/52/51 datasheet Rev. 8.7.

Does the LPC1759FBD80K support I²S audio interface functionality?

Yes, the LPC1759FBD80K supports a full I²S (Inter-IC Sound) interface, including I2STX_CLK, I2STX_WS, I2STX_SDA, I2SRX_SDA, TX_MCLK, and RX_MCLK signals - as specified in Table 4 (Pin Description) and Section 2 "Features and benefits". This capability is exclusive to the LPC1759/58/56 variants and enables digital audio input/output for voice prompts, audio feedback, or codec interfacing without external audio controllers.