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NXP Semiconductors LPC2939FBD208,551
- Part No.:
- LPC2939FBD208,551
- Manufacturer:
- NXP Semiconductors
- Category:
- Microcontrollers
- Package:
- 208-LQFP
- Datasheet:
-
LPC2939FBD208,551.pdf
- Description:
- IC MCU 16/32B 768KB FLSH 208LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:3,110
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Product details
Overview
LPC2939FBD208,551 from NXP Semiconductors is an ARM968E-S-based microcontroller operating at up to 125 MHz, integrating 768 kB flash, 56 kB SRAM (including dual 32 kB TCM), dual CAN, dual LIN, full-speed USB 2.0 Host/OTG/Device, three 10-bit ADCs (24 total channels), and a 208-pin LQFP package. It targets industrial control, medical instrumentation, and automotive body electronics requiring mixed-signal real-time processing.
For engineers reviewing the LPC2939FBD208,551 datasheet, LPC2939FBD208,551 pinout, LPC2939FBD208,551 application, or LPC2939FBD208,551 equivalent, key selection factors include its dual-CAN/LIN support, 125 MHz ARM968E-S core with TCM, USB 2.0 PHY integration, 24-channel analog acquisition capability, and flexible clock generation unit for dynamic power management.
Technical Context
The LPC2939FBD208,551 implements a multilayer AHB bus architecture running at 125 MHz with four independent layers, enabling concurrent high-bandwidth access to TCM, flash, SRAM, and peripherals. Its dual-master GPDMA controller supports memory-to-memory transfers and peripheral DMA for UARTs, SPIs, and ADCs - including direct access to both ITCM and DTCM blocks.
Two independent Clock Generation Units (CGUs) provide granular clock control: one drives the CPU and system peripherals with PLL scaling up to 125 MHz and seven fractional dividers; the second generates dedicated USB clocks and configurable outputs. The Power Management Unit enables per-module clock gating and multiple low-power modes triggered by CAN/LIN activity or external interrupts.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | ARM968E-S, 32-bit RISC, up to 125 MHz - delivers deterministic real-time performance with THUMB/ARM instruction sets and 5-stage pipeline. |
| Memory | 768 kB flash + 16 kB EEPROM + 56 kB SRAM (32 kB DTCM + 32 kB ITCM + 16 kB SRAM + 8 kB ETB SRAM) - enables secure firmware storage, fast interrupt handling, and trace buffer reuse. |
| ADC System | Three 10-bit ADCs: one 5 V-range (8 ch), two 3.3 V-range (16 ch total); 2.44 µs/channel conversion; hardware compare and multi-trigger (timer/PWM/external) - supports high-resolution sensor monitoring without CPU overhead. |
| Serial Interfaces | USB 2.0 Full-Speed Host/OTG/Device (with on-chip PHY and dedicated DMA); dual CAN 2.0B; dual LIN 2.0; two 550 UARTs (16-byte FIFO, RS-485/9-bit mode); three Q-SPIs; two I²C - enables robust multi-protocol connectivity in vehicle networks and industrial gateways. |
| Package & Temp | LQFP208 (28 × 28 × 1.4 mm); −40 °C to +85 °C ambient - suitable for space-constrained industrial PCBs requiring extended temperature operation. |
| Power Supply | Dual-rail: 1.8 V ±5 % (core), 2.7–3.6 V (I/O, 5.5 V tolerant); separate 3.3 V ADC supply (VDDA(ADC3V3)) and 5 V ADC reference (VDDA(ADC5V0)) - ensures noise-isolated analog accuracy and flexible board-level power design. |
Pinout & Package
Package: 208-pin LQFP (SOT459-1), 28 mm × 28 mm × 1.4 mm body, 0.5 mm pitch. Features five GPIO ports (P0–P5) totaling 152 programmable I/O pins with pull-up/pull-down/bus keeper, plus dedicated analog, USB, JTAG, oscillator, and power pins.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD(CORE) | Digital core power supply | 1.8 V ±5 % input for ARM968E-S and internal logic - requires local low-noise regulation and decoupling. |
| VDD(IO) | I/O power supply | 2.7–3.6 V input for GPIOs and digital peripherals - tolerant to 5.5 V on inputs, enabling direct interfacing with 5 V systems. |
| VDDA(ADC5V0) | Analog reference voltage | 5 V supply for ADC0 reference - enables full-scale 5 V measurement range with 10-bit resolution (≈4.88 mV/LSB). |
| P0[0]–P0[23] | GPIO Port 0 | 24-pin bank supporting ADC0/1/2 inputs, PWM, UART, CAN, Q-SPI, and quadrature encoder functions - provides flexible peripheral mapping via SFSP registers. |
| USB_D+1 / USB_D−1 | USB 1 differential pair | Full-speed USB 2.0 physical layer interface - integrated PHY eliminates external transceiver; requires controlled 90 Ω differential impedance routing. |
| XIN_OSC / XOUT_OSC | Clock crystal interface | Connects to 10–25 MHz crystal for main system clock - feeds PLL for CPU and peripheral clock derivation. |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent CGUs | Enables simultaneous CPU clock scaling (up to 125 MHz) and USB clock generation (48 MHz) without shared PLL contention or jitter coupling. |
| Tightly Coupled Memory (TCM) | 32 kB ITCM + 32 kB DTCM - provides zero-wait-state instruction/data access for time-critical ISR and real-time control loops. |
| Hardware ADC compare | Each of 24 ADC channels supports threshold comparison with automatic interrupt generation - reduces CPU polling load in sensor alarm applications. |
| Quadrature encoder interface | Dedicated QEI0 module monitors external encoder position/speed - offloads timing-critical edge detection from CPU, freeing cycles for higher-layer control. |
| External Static Memory Controller | 8 banks, 32-bit data, 24-bit address - supports NOR flash, SRAM, and FPGA interfaces up to 16 MB per bank for expandable code/data storage. |
Applications
| Automotive Body Control Module | Industrial PLC I/O Gateway |
|---|---|
Use Scenario: Centralized control of door locks, lighting, window lifts, and HVAC actuators in 12 V vehicle platforms. IC Role / Device Role / Timing Role: Main application processor executing CAN/LIN protocol stacks, PWM motor control, and ADC-based sensor fusion (temperature, current, position). Use Value: Dual CAN/LIN controllers eliminate external protocol translators; 24-channel ADC enables direct connection of cabin sensors without external muxing. | Use Scenario: Fieldbus gateway aggregating Modbus RTU, CANopen, and analog sensor inputs into EtherNet/IP or PROFINET backbone. IC Role / Device Role / Timing Role: Protocol translation engine with real-time scheduling of serial comms, ADC sampling, and Ethernet packet assembly. Use Value: Multilayer AHB and dual-GPDMA allow concurrent USB host (for configuration), CAN (fieldbus), and ADC (sensor) traffic without CPU bottlenecks. |
| Medical Patient Monitor Front-End | Smart Energy Meter Communication Hub |
Use Scenario: Vital sign acquisition (ECG, SpO₂, NIBP) with local display, data logging, and USB/RS-485 telemetry in Class II medical devices. IC Role / Device Role / Timing Role: Mixed-signal SoC managing analog front-end conditioning, 10-bit ADC digitization, waveform buffering, and secure USB device communication. Use Value: Dedicated 5 V ADC reference (VDDA(ADC5V0)) ensures clinical-grade accuracy; 16 kB EEPROM stores calibration coefficients with byte-level erasability. | Use Scenario: Two-way communication between utility meter ICs (e.g., metrology SoCs) and HAN/WAN networks using RF, PLC, or cellular modems. IC Role / Device Role / Timing Role: Secure data concentrator with isolated ADC monitoring of power supply health and tamper detection inputs. Use Value: 24-channel ADC supports simultaneous voltage/current/temperature monitoring across multiple metering phases; LIN interface enables legacy sub-meter communication. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ARM9 microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LPC2923FBD208 | Same ARM968E-S core, 512 kB flash, 32 kB SRAM, single CAN, no LIN, no USB OTG | Lacks dual CAN/LIN and USB Host/OTG - unsuitable for multi-bus automotive or USB-configurable field devices | Select when cost-sensitive designs require only basic CAN connectivity and omit USB/LIN functionality. |
| LPC1788FBD208 | Cortex-M3 core, 512 kB flash, 64 kB SRAM, single CAN, no LIN, USB 2.0 Host/Device (no OTG), no 5 V ADC reference | Higher interrupt density and DSP extensions but lacks 5 V ADC input and LIN 2.0 hardware support | Prefer for new Cortex-M-based designs needing Ethernet MAC or advanced DSP; not drop-in compatible due to architecture and peripheral differences. |
Compared with LPC2923FBD208 and LPC1788FBD208, the LPC2939FBD208,551 uniquely combines ARM9 real-time determinism, dual CAN/LIN, full-speed USB OTG, and 5 V-tolerant analog acquisition - making it irreplaceable for legacy automotive body control and medical instrumentation requiring certified mixed-signal integration.
Availability
LPC2939FBD208,551 is available at Aetrix Electronics and suitable for automotive body electronics, industrial PLC gateways, medical patient monitors, and smart energy metering applications requiring stable component supply over extended product lifecycles.
Supply support for LPC2939FBD208,551 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, with deep expertise in ARM-based microcontrollers and automotive-grade qualification.
The LPC2939 belongs to NXP's ARM9-based LPC2900 family, designed specifically for automotive and industrial applications demanding integrated CAN/LIN, USB, and high-resolution analog acquisition in a single chip - reducing BOM count and system complexity.
FAQ
What is the maximum operating frequency of the LPC2939FBD208,551 CPU core?
The LPC2939FBD208,551 integrates an ARM968E-S core rated for operation up to 125 MHz. This maximum frequency is achieved using the on-chip PLL with a 10–25 MHz crystal input. The Clock Generation Unit allows dynamic scaling below this rate to reduce power consumption during low-activity periods while maintaining real-time responsiveness.
Does the LPC2939FBD208,551 support USB On-The-Go functionality?
Yes, the LPC2939FBD208,551 includes a full-speed USB 2.0 Host/OTG/Device controller with an integrated PHY and dedicated DMA channel. Its OTG capability enables role switching between host and device modes under software control, supporting applications such as field-service tool connectivity or dual-role peripheral docking stations.
How many analog input channels does the LPC2939FBD208,551 support, and what are their voltage ranges?
The LPC2939FBD208,551 supports 24 analog input channels across three independent 10-bit ADCs: one with 5.0 V measurement range (8 channels), and two with 3.3 V range (8 channels each). The 5 V ADC uses dedicated VDDA(ADC5V0) and VREFP/VREFN pins, enabling direct connection to unconditioned automotive or industrial sensors.
What package type and pin count does the LPC2939FBD208,551 use?
The LPC2939FBD208,551 is housed in a 208-pin LQFP package (SOT459-1), measuring 28 mm × 28 mm × 1.4 mm with 0.5 mm lead pitch. It provides 152 general-purpose I/O pins distributed across five ports (P0–P5), plus dedicated power, analog, USB, JTAG, and oscillator terminals.
Is the LPC2939FBD208,551 qualified for automotive applications?
The LPC2939FBD208,551 operates across −40 °C to +85 °C and integrates dual CAN, LIN, and robust ESD protection - features aligned with automotive body electronics requirements. While not AEC-Q100 certified as a standalone part, it has been deployed in production automotive modules meeting ISO/TS 16949 quality standards and supports functional safety design patterns per ISO 26262 ASIL-B decomposition.
LPC2939FBD208,551 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Package/Case:
- 208-LQFP
- Series:
- LPC2900
- Packaging:
- Tray
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Core Processor:
- ARM9®
- Core Size:
- 16/32-Bit
- Speed:
- 125MHz
- Connectivity:
- CANbus, EBI/EMI, I2C, LINbus, SPI, UART/USART, USB, USB OTG
- Peripherals:
- DMA, POR, PWM, WDT
- Number of I/O:
- 152
- Program Memory Size:
- 768KB (768K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- 16K x 8
- RAM Size:
- 56K x 8
- Voltage - Supply (Vcc/Vdd):
- 1.71V ~ 3.6V
- Data Converters:
- A/D 24x10b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
LPC2939FBD208,551 FAQ
1.How can I place an order for LPC2939FBD208,551 through Aetrix?
Please submit a Request for Quotation (RFQ) for LPC2939FBD208,551 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 LPC2939FBD208,551 reliable?
The price and inventory of LPC2939FBD208,551 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LPC2939FBD208,551 is usually 5 days.
3.What payment methods are accepted for LPC2939FBD208,551?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LPC2939FBD208,551 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LPC2939FBD208,551?
LPC2939FBD208,551 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LPC2939FBD208,551 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 LPC2939FBD208,551?
For technical support, including LPC2939FBD208,551 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LPC2939FBD208,551 requirements.
6.How does Aetrix verify that LPC2939FBD208,551 is sourced from the original manufacturer or authorized distributors?
All LPC2939FBD208,551 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 LPC2939FBD208,551 meets industry standards.
7.What is the process for return or replacement of LPC2939FBD208,551?
All LPC2939FBD208,551 units undergo pre-shipment inspection (PSI). If there is an issue with LPC2939FBD208,551, 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 LPC2939FBD208,551 part is unused and in its original packaging.
Return procedure for LPC2939FBD208,551:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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