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NXP Semiconductors LPC1776FBD208,551
- Part No.:
- LPC1776FBD208,551
- Manufacturer:
- NXP Semiconductors
- Category:
- Microcontrollers
- Package:
- 208-LQFP
- Datasheet:
-
LPC1776FBD208,551.pdf
- Description:
- IC MCU 32BIT 256KB FLASH 208LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:4,380
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Product details
Overview
LPC1776FBD208 from NXP Semiconductors is a 32-bit ARM Cortex-M3 microcontroller designed for embedded control applications requiring high integration, low power, and real-time responsiveness. It operates at up to 120 MHz, integrates 256 kB flash, 80 kB SRAM (64 kB main + 16 kB peripheral), 4032-byte EEPROM, dual CAN, USB Device/Host/OTG, five UARTs, and an 8-channel 12-bit ADC - deployed in industrial motor drives and networked HVAC controllers.
For engineers reviewing the LPC1776FBD208 datasheet, LPC1776FBD208 pinout, LPC1776FBD208 application, or LPC1776FBD208 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 LPC1776FBD208 implements a Harvard-architecture ARM Cortex-M3 core with 3-stage pipeline, integrated Memory Protection Unit (MPU), and Nested Vectored Interrupt Controller (NVIC). Its multilayer AHB matrix enables concurrent access by CPU, USB, Ethernet (not present on LPC1776), and GPDMA without arbitration delay unless accessing the same slave.
It features a dedicated flash accelerator, dual PLLs (one for CPU, one for USB), and a split APB bus with write buffering to reduce CPU stalls. The device supports four reduced-power modes (Sleep, Deep-sleep, Power-down, Deep power-down) with wake-up via RTC, GPIO (Port 0/2), or external interrupts - all confirmed for this LQFP208 variant.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | ARM Cortex-M3 with MPU, NVIC, and system tick timer - enables deterministic real-time task scheduling and memory isolation in safety-critical firmware. |
| Max Clock Frequency | 120 MHz - delivers 1.25 DMIPS/MHz performance for high-throughput control loops and protocol stacks. |
| Memory | 256 kB flash (ISP/IAP), 80 kB SRAM (64 kB main + 16 kB peripheral), 4032 B EEPROM - supports field firmware updates, DMA-accelerated peripheral buffers, and non-volatile configuration storage. |
| Analog Peripherals | 8-channel 12-bit ADC (400 kHz max sample rate), 10-bit DAC - enables closed-loop analog sensing and actuator control without external converters. |
| Digital Interfaces | 5 UARTs (with RS-485/EIA-485 support), 3 SSP, 3 I²C (one Fast-mode Plus), 2 CAN, SD/MMC, I²S - provides native connectivity for industrial sensors, displays, and communication modules. |
| Power & Packaging | Single 3.3 V supply (2.4–3.6 V), −40 °C to +85 °C, LQFP208 (28 × 28 × 1.4 mm) - suitable for industrial PCBs with standard reflow profiles and thermal management. |
Pinout & Package
LPC1776FBD208 uses a plastic low-profile quad flat package (LQFP208) with 208 leads, 28 mm × 28 mm body, and 0.5 mm lead pitch. All I/O pins are 5 V tolerant (except ADC, crystal, and power pins), supporting direct interfacing with legacy 5 V logic.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P0[0]–P0[31] | General-purpose I/O port with multiplexing | 32-bit bit-banded port accessible via AHB for fast GPIO control; supports interrupt generation on any pin (Port 0/2) and configurable pull-up/down. |
| P1[0]–P1[31] | General-purpose I/O port with multiplexing | Second 32-bit AHB-connected port; shares function select logic with P0 but independent direction/control registers. |
| P2[0]–P2[31] | General-purpose I/O port with multiplexing | Third 32-bit AHB-connected port; all pins support edge-sensitive interrupts and can trigger Wake-up Interrupt Controller (WIC) from low-power modes. |
| P3[0]–P3[31] | General-purpose I/O port with multiplexing | Fourth 32-bit AHB-connected port; includes dedicated pins for EMC interface (in larger variants) - not enabled on LPC1776 due to flash/SRAM configuration. |
| VDDA/VSSA | Analog power supply/ground | Separate 3.3 V analog domain for ADC/DAC reference stability; requires local decoupling to maintain 12-bit ADC accuracy. |
| XTAL1/XTAL2 | Crystal oscillator inputs | Supports 1–25 MHz external crystals; internal 12 MHz RC oscillator (1% accuracy) available as fallback clock source. |
Key Features
| Feature | Design Value |
|---|---|
| Flash Accelerator | Enables zero-wait-state execution at 120 MHz from on-chip flash - eliminates need for external SRAM for code storage in cost-sensitive designs. |
| GPDMA Controller | 8-channel AHB-based DMA supporting UART, SSP, I²S, ADC, DAC, and memory-to-memory transfers - offloads CPU during high-bandwidth data movement. |
| Real-Time Clock (RTC) | Dedicated 32.768 kHz oscillator domain with 20-byte battery-backed registers and event recorder - maintains time and system state during full power-down with 2.1 V minimum backup voltage. |
| Windowed Watchdog Timer (WWDT) | Dedicated internal oscillator with programmable window timing and warning interrupt - prevents runaway code while allowing safe servicing intervals in safety-critical firmware. |
| CRC Engine | Hardware block supporting CRC-16, CRC-CCITT, and CRC-32 polynomials with DMA coupling - enables error detection on firmware updates or communication payloads without CPU overhead. |
Applications
| Industrial Motor Control | Networked HVAC Controller |
|---|---|
Use Scenario: Closed-loop three-phase motor control using encoder feedback and PWM outputs. IC Role / Device Role / Timing Role: MCU executing FOC algorithm, generating six PWM signals via motor control PWM block, reading quadrature encoder via QEI, and managing CAN bus for supervisory commands. Use Value: Integrated motor control PWM with dead-time insertion and QEI reduces BOM count; 120 MHz CPU handles real-time current loop (<10 µs update) and communication stack concurrently. | Use Scenario: Central HVAC unit coordinating temperature, airflow, and damper control across multiple zones via Modbus RTU over RS-485. IC Role / Device Role / Timing Role: Main controller running RTOS, managing five UARTs (two for RS-485 Modbus, one for debug, one for display, one for sensor bridge), and storing zone configurations in EEPROM. Use Value: Five hardware UARTs with fractional baud rate generators eliminate software bit-banging; 4032-byte EEPROM retains calibration and schedule data through power cycles without external memory. |
| Medical Imaging Subsystem | Automotive Aftermarket Telematics |
Use Scenario: Signal acquisition and preprocessing for portable ultrasound probe interface. IC Role / Device Role / Timing Role: ADC sampling analog front-end at 400 kHz, transferring data via GPDMA to SRAM, applying FIR filtering in real time, and streaming processed frames over USB to host PC. Use Value: 12-bit ADC with DMA support captures high-fidelity echo signals; USB 2.0 full-speed OTG enables direct host connection without external PHY or hub IC. | Use Scenario: GPS/fleet monitoring unit collecting vehicle OBD-II data, GNSS position, and cellular telemetry. IC Role / Device Role / Timing Role: Dual-CAN interface reads J1939/ISO 15765 messages, UART4 handles GNSS NMEA output, USB hosts cellular modem, and RTC timestamps events with battery backup. Use Value: Two independent CAN controllers with message RAM allow simultaneous engine and chassis bus monitoring; RTC event recorder logs fault triggers with sub-second precision even during main power loss. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LPC1778FBD208 | 512 kB flash, 96 kB SRAM (64 + 16×2), same peripherals except no LCD controller - identical pinout and package. | Supports larger firmware images and dual-buffered DMA operations; required when >256 kB flash or >80 kB SRAM is needed for bootloader + application + OTA storage. | Select LPC1778FBD208 when firmware complexity demands more code space or concurrent peripheral buffering without changing PCB layout. |
| LPC1786FBD208 | 256 kB flash, 80 kB SRAM, adds Ethernet MAC (MII/RMII) and LCD controller - same pinout but different peripheral enablement. | Enables wired network connectivity and local TFT display; requires additional magnetics, PHY, and display interface circuitry not needed for LPC1776FBD208. | Choose LPC1786FBD208 only if Ethernet or LCD functionality is mandatory; otherwise, LPC1776FBD208 avoids unused silicon and associated BOM cost. |
Compared with LPC1776FBD208, LPC1778FBD208 offers scalable memory headroom within identical footprint, while LPC1786FBD208 introduces Ethernet and LCD - both require no PCB changes but differ in peripheral utilization, power budget, and firmware compatibility.
Availability
LPC1776FBD208 is available at Aetrix Electronics and suitable for industrial motor drives, networked HVAC systems, and automotive telematics requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.
Supply support for LPC1776FBD208 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.
The LPC17xx series was engineered for high-integration embedded control - balancing ARM Cortex-M3 performance, rich peripheral sets, and low-power operation for real-time industrial and medical systems.
FAQ
What is the maximum operating frequency of the LPC1776FBD208?
The LPC1776FBD208 operates at up to 120 MHz using its internal PLL, which can be driven by either the 1–25 MHz external crystal oscillator or the 12 MHz internal RC oscillator. This frequency is sustained with zero wait states thanks to the integrated flash accelerator, enabling deterministic real-time execution directly from on-chip flash memory.
Does the LPC1776FBD208 include Ethernet capability?
No, the LPC1776FBD208 does not include an Ethernet MAC. According to Table 2 in the official datasheet, Ethernet is marked "N" (not available) for this part number. The LPC1776FBD208 retains all other core peripherals - dual CAN, USB Device/Host/OTG, five UARTs, and the 8-channel 12-bit ADC - but omits the Ethernet controller present in higher-tier variants like LPC1786FBD208.
How much SRAM is available on the LPC1776FBD208 and how is it organized?
The LPC1776FBD208 provides 80 kB of total SRAM: 64 kB of main SRAM on the CPU's local code/data bus for high-speed instruction and data access, plus one 16 kB peripheral SRAM block accessible via AHB. Unlike the LPC1778/LPC1788, it does not include a second 16 kB peripheral SRAM block - confirmed in Table 2 of the datasheet under "Peripheral SRAM (kB)".
Can the LPC1776FBD208 support external memory expansion?
No, the LPC1776FBD208 does not include the External Memory Controller (EMC). Table 2 explicitly lists EMC as "N" for this part number. While higher variants (e.g., LPC1788FBD208) support SDRAM, NOR/NAND flash, and SRAM via a 32-bit EMC bus, the LPC1776FBD208 relies solely on its on-chip 256 kB flash and 80 kB SRAM for program and data storage.
What debug interfaces are supported by the LPC1776FBD208?
The LPC1776FBD208 supports JTAG, Serial Wire Debug (SWD), and Serial Wire Trace (SWO) interfaces. It also includes an Embedded Trace Macrocell (ETM) for real-time instruction trace and boundary scan for board-level testing - all implemented per ARM Cortex-M3 architecture specifications and verified in the "Features and benefits" section of the official datasheet.
LPC1776FBD208,551 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Package/Case:
- 208-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:
- 120MHz
- Connectivity:
- CANbus, EBI/EMI, Ethernet, I2C, Microwire, Memory Card, SPI, SSI, SSP, UART/USART, USB OTG
- Peripherals:
- Brown-out Detect/Reset, DMA, I2S, Motor Control PWM, POR, PWM, WDT
- Number of I/O:
- 165
- Program Memory Size:
- 256KB (256K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- 4K x 8
- RAM Size:
- 80K x 8
- Voltage - Supply (Vcc/Vdd):
- 2.4V ~ 3.6V
- Data Converters:
- A/D 8x12b; D/A 1x10b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
LPC1776FBD208,551 FAQ
1.How can I place an order for LPC1776FBD208,551 through Aetrix?
Please submit a Request for Quotation (RFQ) for LPC1776FBD208,551 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 LPC1776FBD208,551 reliable?
The price and inventory of LPC1776FBD208,551 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LPC1776FBD208,551 is usually 5 days.
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Once your LPC1776FBD208,551 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 LPC1776FBD208,551?
For technical support, including LPC1776FBD208,551 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LPC1776FBD208,551 requirements.
6.How does Aetrix verify that LPC1776FBD208,551 is sourced from the original manufacturer or authorized distributors?
All LPC1776FBD208,551 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 LPC1776FBD208,551 meets industry standards.
7.What is the process for return or replacement of LPC1776FBD208,551?
All LPC1776FBD208,551 units undergo pre-shipment inspection (PSI). If there is an issue with LPC1776FBD208,551, 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 LPC1776FBD208,551 part is unused and in its original packaging.
Return procedure for LPC1776FBD208,551:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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