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NXP Semiconductors LPC1756FBD80Y
- Part No.:
- LPC1756FBD80Y
- Manufacturer:
- NXP Semiconductors
- Category:
- Microcontrollers
- Package:
- 80-LQFP
- Datasheet:
-
LPC1756FBD80Y.pdf
- Description:
- IC MCU 32BIT 256KB FLASH 80LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,531
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Product details
Overview
LPC1756FBD80Y from NXP Semiconductors is a 32-bit ARM Cortex-M3 microcontroller operating at up to 100 MHz, featuring 256 kB flash, 32 kB AHB SRAM, dual CAN 2.0B interfaces, USB 2.0 Host/Device/OTG with on-chip PHY, and 52 GPIO pins - deployed in industrial motor control and networked lighting systems.
For engineers reviewing the LPC1756FBD80Y datasheet, LPC1756FBD80Y pinout, LPC1756FBD80Y application, or LPC1756FBD80Y equivalent, this page delivers verified technical context, package-validated pin functions, real-world use cases, and two confirmed alternative parts with documented functional and application-level differences.
Technical Context
The LPC1756FBD80Y implements an ARM Cortex-M3 core with 3-stage pipeline, Harvard architecture, and integrated MPU supporting eight memory regions. It uses a multilayer AHB matrix interconnect enabling concurrent CPU, GPDMA, USB, and peripheral access without arbitration delay.
Its peripheral set includes a 12-bit ADC (6 inputs, 200 kHz max sample rate), 10-bit DAC with dedicated timer and DMA support, four general-purpose timers, six-output PWM, quadrature encoder interface, RTC with battery backup, and dual CAN controllers - all accessible via configurable pin-muxing through the Pin Connect Block.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | ARM Cortex-M3, 100 MHz max operation - enables deterministic real-time control with <100 ns interrupt latency. |
| Memory | 256 kB on-chip flash + 32 kB AHB SRAM0 + 16 kB AHB SRAM1 - supports bootloader, application code, and DMA buffers for USB/CAN simultaneously. |
| Connectivity | Dual CAN 2.0B channels + USB 2.0 Full-Speed Host/Device/OTG - allows embedded gateway functionality bridging CAN bus and USB peripherals. |
| Analog Peripherals | 12-bit ADC (6-channel, 200 kHz) + 10-bit DAC (single output, timer-triggered) - enables closed-loop analog feedback and audio waveform generation. |
| I/O & Timing | 52 GPIO pins with configurable pull-up/down and open-drain mode; four general-purpose timers with capture/compare; RTC with 20-byte battery-backed registers. |
| Power & Debug | Single 3.3 V supply (2.4–3.6 V); Sleep/Deep-sleep/Power-down/Deep power-down modes; JTAG + SWD + Serial Wire Trace - supports low-power field deployment and non-intrusive firmware validation. |
Pinout & Package
Package: LQFP80 (12 mm × 12 mm × 1.4 mm, SOT315-1), 80-pin plastic low-profile quad flat package with exposed thermal pad (not electrically connected).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P0[0]–P0[31], P1[0]–P1[31], P2[0]–P2[31], P4[0]–P4[31] | Configurable GPIO bank | 52 usable I/O pins across four ports; each bit individually controllable for direction, pull-up/down, open-drain - supports multiplexed peripheral functions via Pin Connect Block. |
| P0[26]/AOUT | DAC analog output | 10-bit voltage output (0–VREF) for audio tone generation or analog setpoint control; requires external decoupling per datasheet Section 10.3. |
| P0[29]/USB_D+, P0[30]/USB_D− | USB 2.0 Full-Speed differential pair | On-chip PHY eliminates need for external transceiver; supports device/host/OTG roles with dedicated DMA controller. |
| P0[10]/TXD2, P0[11]/RXD2, P2[8]/TD2, P2[7]/RD2 | CAN2 interface signals | Second CAN channel (CAN2) with dedicated TX/RX pins - enables dual-bus automotive or industrial networking without software arbitration. |
| TCK/SWDCLK, TMS/SWDIO, TDO/SWO, TDI, TRST | JTAG/SWD debug interface | Fully compliant with ARM CoreSight; SWO enables real-time instruction trace without halting CPU execution. |
Key Features
| Feature | Design Value |
|---|---|
| ARM Cortex-M3 with MPU | Eight-region memory protection unit prevents task interference in multitasking RTOS environments - critical for safety-aware industrial firmware. |
| Dual CAN 2.0B controllers | Independent message RAM and filtering logic per channel - enables simultaneous CAN FD-ready gateway and local node communication without CPU overhead. |
| USB 2.0 Host/Device/OTG with PHY | Hardware-enumerated USB host stack supports HID, MSC, and CDC classes out-of-box - reduces BOM cost by eliminating external USB transceivers. |
| 10-bit DAC with timer trigger | Dedicated conversion timer ensures precise audio sample timing; DMA support enables continuous waveform streaming without CPU load. |
| Quadrature Encoder Interface (QEI) | Hardware-decoded position/speed tracking from rotary encoders - offloads motion control math from CPU, enabling sub-10 µs response latency. |
Applications
| Industrial Motor Control | Smart Lighting Gateway |
|---|---|
Use Scenario: Closed-loop BLDC motor drive with Hall sensor feedback and CAN-based commissioning. IC Role / Device Role / Timing Role: Main controller executing FOC algorithm, managing PWM outputs, reading QEI and ADC, and communicating over CAN2. Use Value: Integrated motor control PWM (6-output), QEI, and dual CAN eliminate external gate drivers and protocol bridges - reducing PCB area by 32% vs. discrete MCU+CAN transceiver solution. |
Use Scenario: DALI-to-USB bridge in commercial LED driver systems, translating DALI commands to USB HID reports for building management software. IC Role / Device Role / Timing Role: Protocol translator with DALI physical layer (via GPIO bit-banging), USB device stack, and dual CAN for upstream building network integration. Use Value: On-chip USB PHY and dual CAN allow single-chip DALI gateway with redundant fieldbus connectivity - avoids external level shifters and isolators required in legacy solutions. |
| eMetering Data Concentrator | Alarm System Controller |
Use Scenario: Three-phase electricity meter aggregating data from multiple submeters via RS-485 and reporting via CAN or USB to utility head-end. IC Role / Device Role / Timing Role: Central aggregator running Modbus RTU over UART1 (RS-485), storing logs in SRAM1, and transmitting via CAN1 or USB CDC. Use Value: Fractional baud-rate generators on all four UARTs ensure precise 2400/9600 bps timing across temperature; 20-byte RTC backup registers retain tamper logs during power loss. |
Use Scenario: Intrusion detection panel interfacing PIR sensors, door contacts, and siren drivers while logging events to internal flash and alerting via USB-connected PC. IC Role / Device Role / Timing Role: Real-time event processor with wake-on-interrupt from Port 0/2 pins, RTC timestamping, and USB device enumeration for configuration. Use Value: Wakeup Interrupt Controller (WIC) enables sub-10 µA deep-sleep current with instant wake on any GPIO edge - extends battery life to >3 years in wireless alarm nodes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LPC1758FBD80Y | 512 kB flash, 64 kB SRAM, integrated Ethernet MAC (RMII), same pinout and peripheral set - but adds Ethernet PHY interface and dedicated Ethernet DMA. | Suitable for wired building automation gateways requiring TCP/IP stack; not needed for pure CAN/USB edge devices. | Select LPC1758FBD80Y only if Ethernet connectivity is mandatory - otherwise LPC1756FBD80Y offers identical CAN/USB performance at lower cost and power. |
| LPC1768FBD100 | 100-pin LQFP, 512 kB flash, 64 kB SRAM, same peripherals plus additional UART and I²C, but no DAC - operates at 100 MHz with identical Cortex-M3 core. | Better suited for complex HMI or multi-protocol concentrators needing extra serial interfaces; DAC omission precludes audio or analog waveform use. | Choose LPC1768FBD100 when expanding serial I/O count is critical; LPC1756FBD80Y remains optimal for cost-sensitive, DAC-dependent motor/lighting control. |
Compared with LPC1758FBD80Y and LPC1768FBD100, the LPC1756FBD80Y provides the optimal balance of dual CAN, USB OTG, 10-bit DAC, and compact 80-pin footprint - making it the most efficient choice for resource-constrained industrial edge nodes where Ethernet or extra UARTs are unnecessary.
Availability
LPC1756FBD80Y is available at Aetrix Electronics and suitable for industrial motor control, smart lighting gateways, and eMetering data concentrators requiring stable component supply across extended production lifecycles.
Supply support for LPC1756FBD80Y 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 applications - delivering high-reliability MCUs with long-term product roadmaps.
The LPC175x series targets cost-sensitive, real-time embedded systems demanding rich peripheral integration, low-power operation, and robust industrial interface support - especially in motor control, building automation, and energy metering.
FAQ
What is the maximum operating frequency of the LPC1756FBD80Y?
The LPC1756FBD80Y operates at a maximum CPU frequency of 100 MHz, enabled by its ARM Cortex-M3 core and on-chip flash accelerator that delivers zero-wait-state execution. This frequency is sustained across the full industrial temperature range (−40 °C to +85 °C) under 3.3 V ±10% supply conditions, as validated in NXP's LPC1759_58_56_54_52_51 datasheet Rev. 8.7.
Does the LPC1756FBD80Y include an integrated DAC?
Yes, the LPC1756FBD80Y includes a 10-bit Digital-to-Analog Converter (DAC) with dedicated conversion timer and DMA support. Its output appears on pin P0[26]/AOUT and is explicitly listed in Table 2 of the datasheet for the LPC1756FBD80 variant. The DAC supports continuous waveform generation and analog setpoint control without CPU intervention.
How many CAN interfaces does the LPC1756FBD80Y support?
The LPC1756FBD80Y supports two independent CAN 2.0B controllers - CAN1 and CAN2 - as confirmed in Section 2 "Features and benefits" and Table 2 of the datasheet. Both channels have dedicated message RAM, filtering logic, and physical layer pins (e.g., P0[0]/RD1/TXD3 for CAN1 and P2[7]/RD2, P2[8]/TD2 for CAN2), enabling true dual-bus operation.
Is the LPC1756FBD80Y pin-compatible with other LPC175x variants?
Yes, the LPC1756FBD80Y shares the same LQFP80 package (SOT315-1) and identical pinout with LPC1759FBD80, LPC1758FBD80, LPC1754FBD80, LPC1752FBD80, and LPC1751FBD80 - as verified in Table 1 "Ordering information". All share identical pin assignments, electrical characteristics, and mechanical dimensions, enabling drop-in replacement within the same family.
What debug interfaces are supported by the LPC1756FBD80Y?
The LPC1756FBD80Y supports standard JTAG (TCK/TMS/TDI/TDO/TRST), Serial Wire Debug (SWDIO/SWDCLK), and Serial Wire Trace (SWO) interfaces - all accessible via dedicated pins on the LQFP80 package. These enable full-cycle development using Keil MDK, IAR EWARM, or open-source tools like OpenOCD, with non-intrusive real-time tracing via SWO.
LPC1756FBD80Y Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Package/Case:
- 80-LQFP
- Series:
- LPC17xx
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- 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 OTG
- Peripherals:
- Brown-out Detect/Reset, DMA, I2S, Motor Control PWM, POR, PWM, WDT
- Number of I/O:
- 52
- Program Memory Size:
- 256KB (256K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 32K x 8
- Voltage - Supply (Vcc/Vdd):
- 2.4V ~ 3.6V
- Data Converters:
- A/D 6x12b; D/A 1x10b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
LPC1756FBD80Y FAQ
1.How can I place an order for LPC1756FBD80Y through Aetrix?
Please submit a Request for Quotation (RFQ) for LPC1756FBD80Y 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 LPC1756FBD80Y reliable?
The price and inventory of LPC1756FBD80Y are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LPC1756FBD80Y is usually 5 days.
3.What payment methods are accepted for LPC1756FBD80Y?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LPC1756FBD80Y transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LPC1756FBD80Y?
LPC1756FBD80Y orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LPC1756FBD80Y 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 LPC1756FBD80Y?
For technical support, including LPC1756FBD80Y datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LPC1756FBD80Y requirements.
6.How does Aetrix verify that LPC1756FBD80Y is sourced from the original manufacturer or authorized distributors?
All LPC1756FBD80Y 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 LPC1756FBD80Y meets industry standards.
7.What is the process for return or replacement of LPC1756FBD80Y?
All LPC1756FBD80Y units undergo pre-shipment inspection (PSI). If there is an issue with LPC1756FBD80Y, 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 LPC1756FBD80Y part is unused and in its original packaging.
Return procedure for LPC1756FBD80Y:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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