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NXP Semiconductors LPC1751FBD80,551
- Part No.:
- LPC1751FBD80,551
- Manufacturer:
- NXP Semiconductors
- Category:
- Microcontrollers
- Package:
- 80-LQFP
- Datasheet:
-
LPC1751FBD80,551.pdf
- Description:
- IC MCU 32BIT 32KB FLASH 80LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,720
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Product details
Overview
LPC1751FBD80,551 from NXP Semiconductors is a 32-bit ARM Cortex-M3 microcontroller operating at up to 100 MHz, with 32 kB flash, 8 kB SRAM, USB Device-only interface, single CAN 2.0B channel, and 52 GPIO pins in an 80-pin LQFP package. It targets cost-sensitive industrial control and embedded instrumentation requiring deterministic real-time response and low-power operation.
For engineers reviewing the LPC1751FBD80,551 datasheet, LPC1751FBD80,551 pinout, LPC1751FBD80,551 application, or LPC1751FBD80,551 equivalent, key selection criteria include USB device-only capability, absence of Ethernet/I2S/DAC, single-CAN support, and 80-pin LQFP footprint compatibility with LPC175x family designs.
Technical Context
The LPC1751FBD80,551 implements the ARM Cortex-M3 core with 3-stage pipeline, Harvard architecture, and integrated NVIC for deterministic interrupt handling. Its memory subsystem includes 32 kB on-chip flash with zero-wait-state operation at 100 MHz and 8 kB SRAM accessible via AHB bus for high-speed CPU access.
Peripheral integration centers on USB 2.0 Full-Speed Device controller (no Host/OTG), one CAN 2.0B channel, four UARTs with fractional baud rate generation, two I²C-bus interfaces, two SSP controllers, 12-bit ADC (6-channel), RTC with battery backup, and six general-purpose timers - all clocked independently for power optimization.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | ARM Cortex-M3, 100 MHz max - enables deterministic real-time execution with <10 µs interrupt latency. |
| Flash Memory | 32 kB - sufficient for compact firmware with bootloader and basic protocol stacks (e.g., USB CDC, Modbus). |
| SRAM | 8 kB - supports USB descriptor buffers, CAN message queues, and small RTOS kernel with minimal task stacks. |
| USB Interface | Device-only (Full-Speed) - requires external host; no PHY required; supports CDC, HID, and MSC class implementations. |
| CAN Channels | 1 × CAN 2.0B - provides robust fieldbus connectivity for industrial sensor nodes or motor drives with error confinement. |
| GPIO Pins | 52 configurable I/O - includes port-level bit-banding, open-drain mode, and edge-triggered interrupts on P0/P2 for fast event capture. |
| ADC | 12-bit, 6-channel, 200 kHz sampling - suitable for analog sensor acquisition (temperature, voltage, current) without external oversampling. |
| Package | LQFP80 (12 × 12 × 1.4 mm) - standard surface-mount footprint compatible with automated assembly and thermal management in industrial enclosures. |
Pinout & Package
Package: Plastic low-profile quad flat package, 80 leads, body size 12 mm × 12 mm × 1.4 mm (SOT315-1). Pinout validated per NXP LPC1759_58_56_54_52_51 Rev. 8.7 datasheet Section 7.2.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| TCK/SWDCLK (Pin 5) | JTAG/SWD clock input | Enables debug programming and real-time trace via standard ARM tools; shared with SWD for reduced pin count. |
| P0[29]/USB_D+ (Pin 22) | USB differential data+ | Full-speed USB physical layer connection; requires 27 Ω series resistor and proper PCB routing for EMI compliance. |
| P0[30]/USB_D− (Pin 23) | USB differential data− | Complements USB_D+; forms shielded differential pair essential for reliable USB enumeration and data transfer. |
| P2[10]/EINT0/NMI (Pin 41) | External interrupt 0 / Non-maskable interrupt | Hardware wake-up source from deep-sleep modes; supports edge-triggered detection for emergency fault signaling. |
| RSTOUT (Pin 11) | Reset status output | Active-low indicator of internal reset state - used for system-level monitoring and inter-board synchronization. |
| RESET (Pin 14) | External reset input | 5 V tolerant, 50 ns minimum pulse width - integrates directly with power-supply supervisors and manual reset buttons. |
Key Features
| Feature | Design Value |
|---|---|
| ARM Cortex-M3 with MPU | Memory Protection Unit with eight regions isolates firmware tasks and prevents stack overflow corruption in safety-critical routines. |
| In-System Programming (ISP) | Bootloader enables field firmware updates over UART or USB without external programmer - reduces service downtime. |
| Dedicated GPDMA controller | Eight-channel DMA offloads CPU during UART/ADC/USB transfers - maintains 100 MHz CPU bandwidth for control algorithms. |
| Configurable open-drain GPIO | Per-pin open-drain mode allows direct interface with 5 V logic, I²C buses, and wired-AND alarm lines without level shifters. |
| Real-Time Clock with backup registers | 20-byte battery-backed RAM retains time/date and critical state across power cycles - essential for metering and logging applications. |
| Four low-power modes | Sleep, Deep-sleep, Power-down, and Deep power-down reduce active current to <10 µA - extends battery life in remote sensors. |
Applications
| Industrial Sensor Node | USB-Based Data Logger |
|---|---|
Use Scenario: Remote temperature/humidity monitoring in factory environments with periodic data upload via USB cable. IC Role / Device Role / Timing Role: Central MCU managing ADC sampling, CAN bus communication with local actuators, and USB CDC virtual COM port for host PC data retrieval. Use Value: Single-chip solution eliminates external USB transceiver and reduces BOM cost while maintaining deterministic 100 MHz control loop timing. | Use Scenario: Portable environmental logger recording sensor data to internal flash and exporting logs via USB mass storage emulation. IC Role / Device Role / Timing Role: USB MSC device controller with FAT32 file system, managing flash wear leveling and timestamped log entries using RTC. Use Value: 32 kB flash + 8 kB SRAM supports dual-bank logging buffer and USB endpoint descriptors - enables plug-and-play data extraction without drivers. |
| Motor Drive Control Panel | Alarm System Controller |
Use Scenario: Front-panel interface for 3-phase motor drives, accepting start/stop commands and reporting fault codes over CAN. IC Role / Device Role / Timing Role: Real-time CAN node coordinating with drive inverter, processing push-button inputs, driving LED indicators, and managing PWM outputs for status feedback. Use Value: 52 GPIO pins support dedicated button debouncing, LED drivers, and CAN transceiver control - avoids external I/O expanders. | Use Scenario: Security panel aggregating door/window contact sensors and siren outputs, communicating alarm events over CAN to central hub. IC Role / Device Role / Timing Role: Low-power alarm coordinator entering deep-sleep between sensor polls, waking instantly on P0/P2 edge-triggered interrupts for sub-100 µs response. Use Value: Integrated RTC and 20-byte backup RAM retain armed/disarmed state and last-trigger timestamp across AC power loss - meets EN50131 requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LPC1752FBD80,551 | 64 kB flash, 16 kB SRAM, same peripherals but no DAC/I2S - higher memory headroom for larger USB stacks. | Supports more complex USB classes (e.g., composite devices) and deeper RTOS task sets. | Select when firmware exceeds 32 kB or requires additional SRAM for USB buffering and CAN filtering tables. |
| LPC1754FBD80,551 | 128 kB flash, 32 kB SRAM, adds second CAN channel and USB Host/OTG - full USB dual-role capability. | Enables USB peripheral discovery and firmware update from USB stick; supports dual-CAN gateway functions. | Choose when system must act as USB host or route messages between two CAN networks - not drop-in compatible due to enhanced peripheral set. |
Compared with LPC1751FBD80,551, the LPC1752FBD80,551 offers double flash/SRAM for scalable firmware without changing footprint, while the LPC1754FBD80,551 adds architectural capabilities (dual CAN, USB Host) that require hardware redesign but enable new system roles.
Availability
LPC1751FBD80,551 is available at Aetrix Electronics and suitable for industrial sensor nodes, USB-based data loggers, motor drive control panels, and alarm system controllers requiring stable component supply and long-term production continuity.
Supply support for LPC1751FBD80,551 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 LPC175x product line delivers ARM Cortex-M3 microcontrollers optimized for real-time industrial control, featuring integrated USB Device, CAN, and low-power peripherals in compact LQFP packages.
FAQ
What is the maximum CPU frequency supported by the LPC1751FBD80,551?
The LPC1751FBD80,551 operates at a maximum CPU frequency of 100 MHz. This is achieved using the internal PLL driven by the main oscillator, internal RC oscillator, or RTC oscillator. The ARM Cortex-M3 core executes instructions with zero wait states at this speed due to the enhanced flash accelerator, enabling deterministic real-time performance for control loops and protocol stacks in the LPC1751FBD80,551.
Does the LPC1751FBD80,551 support USB Host or OTG functionality?
No, the LPC1751FBD80,551 supports USB 2.0 Full-Speed Device-only operation. It lacks the USB Host and OTG controllers present in higher variants like the LPC1754FBD80,551. The LPC1751FBD80,551 implements only the USB Device controller with on-chip PHY, making it suitable for peripheral roles such as CDC virtual COM ports or HID devices, but not for connecting USB peripherals like flash drives or keyboards.
How many CAN interfaces does the LPC1751FBD80,551 include?
The LPC1751FBD80,551 includes one CAN 2.0B controller. This is confirmed in Table 2 of the NXP datasheet, which explicitly lists "1" under the CAN column for LPC1751FBD80,551. Unlike the LPC1756FBD80 or LPC1758FBD80, the LPC1751FBD80,551 does not support dual CAN channels, limiting it to single-network fieldbus applications.
What is the total SRAM capacity of the LPC1751FBD80,551?
The LPC1751FBD80,551 has a total of 8 kB of SRAM, allocated entirely as AHB SRAM0. Table 2 confirms "8" under the "AHB SRAM0" column and "-" under "AHB SRAM1", indicating no second SRAM block. This 8 kB is accessible via the AHB multilayer matrix for low-latency CPU and DMA access - sufficient for USB endpoint buffers, CAN message objects, and RTOS kernel structures in the LPC1751FBD80,551.
Is the LPC1751FBD80,551 available in a package other than LQFP80?
No, the LPC1751FBD80,551 is exclusively offered in the 80-pin LQFP package (SOT315-1, 12 mm × 12 mm × 1.4 mm), as documented in Table 1 of the NXP datasheet. There are no BGA, QFN, or smaller LQFP variants for this specific part number. Designers must use the 80-pin footprint when integrating the LPC1751FBD80,551, ensuring compatibility with existing LPC175x layout templates.
LPC1751FBD80,551 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Package/Case:
- 80-LQFP
- Series:
- LPC17xx
- Packaging:
- Tray
- Product Status:
- Discontinued at Digi-Key
- Programmable:
- Not Verified
- Core Processor:
- ARM® Cortex®-M3
- Core Size:
- 32-Bit Single-Core
- Speed:
- 100MHz
- Connectivity:
- CANbus, I2C, IrDA, Microwire, SPI, SSI, SSP, UART/USART, USB
- Peripherals:
- Brown-out Detect/Reset, DMA, Motor Control PWM, POR, PWM, WDT
- Number of I/O:
- 52
- Program Memory Size:
- 32KB (32K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 8K x 8
- Voltage - Supply (Vcc/Vdd):
- 2.4V ~ 3.6V
- Data Converters:
- A/D 6x12b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
LPC1751FBD80,551 FAQ
1.How can I place an order for LPC1751FBD80,551 through Aetrix?
Please submit a Request for Quotation (RFQ) for LPC1751FBD80,551 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for LPC1751FBD80,551 reliable?
The price and inventory of LPC1751FBD80,551 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LPC1751FBD80,551 is usually 5 days.
3.What payment methods are accepted for LPC1751FBD80,551?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LPC1751FBD80,551 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LPC1751FBD80,551?
LPC1751FBD80,551 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LPC1751FBD80,551 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for LPC1751FBD80,551?
For technical support, including LPC1751FBD80,551 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LPC1751FBD80,551 requirements.
6.How does Aetrix verify that LPC1751FBD80,551 is sourced from the original manufacturer or authorized distributors?
All LPC1751FBD80,551 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that LPC1751FBD80,551 meets industry standards.
7.What is the process for return or replacement of LPC1751FBD80,551?
All LPC1751FBD80,551 units undergo pre-shipment inspection (PSI). If there is an issue with LPC1751FBD80,551, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The LPC1751FBD80,551 part is unused and in its original packaging.
Return procedure for LPC1751FBD80,551:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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