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NXP Semiconductors LPC2144FBD64,151
- Part No.:
- LPC2144FBD64,151
- Manufacturer:
- NXP Semiconductors
- Category:
- Microcontrollers
- Package:
- 64-LQFP
- Datasheet:
-
LPC2144FBD64,151.pdf
- Description:
- IC MCU 16/32B 128KB FLASH 64LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:822
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Product details
Overview
LPC2144FBD64 from NXP Semiconductors is a 32-bit ARM7TDMI-S microcontroller in LQFP64 package, featuring 128 kB on-chip flash, 16 kB SRAM, dual 10-bit ADCs (14 total channels), single 10-bit DAC, USB 2.0 Full-speed device controller with 2 kB endpoint RAM, and 45 fast 5 V-tolerant GPIO pins. It operates at up to 60 MHz and targets compact embedded systems such as industrial protocol converters and voice recognition front-ends.
For engineers reviewing the LPC2144FBD64 datasheet, LPC2144FBD64 pinout, LPC2144FBD64 application, or LPC2144FBD64 equivalent, key selection criteria include dual-ADC channel count (14), integrated USB device controller with dedicated endpoint RAM, 60 MHz PLL clocking, 5 V-tolerant I/O for mixed-voltage interfacing, and ISP/IAP support enabling field firmware updates without external programming hardware.
Technical Context
The LPC2144FBD64 implements the ARM7TDMI-S core with dual instruction sets (32-bit ARM and 16-bit Thumb), enabling high code density with minimal performance penalty-Thumb reduces code size by >30% while maintaining real-time responsiveness. Its 128-bit wide memory interface and accelerator architecture sustain full 60 MHz operation in ARM mode.
It integrates two independent 10-bit ADCs (AD0 and AD1) with configurable sampling rates down to 2.44 µs per channel, plus a single 10-bit DAC (AOUT) on P0.25. The USB 2.0 Full-speed controller supports descriptor-based enumeration and includes 2 kB of dedicated endpoint RAM, but lacks USB DMA (available only on LPC2146/48).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | ARM7TDMI-S 32-bit RISC processor with Thumb instruction set support |
| Max Clock Frequency | 60 MHz via on-chip PLL (100 µs settling time); enables real-time deterministic execution |
| Flash Memory | 128 kB on-chip flash with 100,000 erase/write cycles and 20-year data retention |
| SRAM | 16 kB on-chip static RAM for stack, heap, and critical variables |
| ADC | Dual 10-bit successive-approximation ADCs: AD0 (6 channels) and AD1 (8 channels), total 14 analog inputs |
| DAC | Single 10-bit voltage-output DAC (AOUT) on P0.25, usable for analog waveform generation or reference calibration |
| USB Interface | USB 2.0 Full-speed (12 Mbps) device controller with 2 kB endpoint RAM; no host capability or DMA |
| I/O Pins | 45 fast GPIO pins (P0.0–P0.31, P1.16–P1.31), all 5 V tolerant with configurable pull-ups and glitch filtering |
Pinout & Package
LPC2144FBD64 uses a plastic low-profile quad flat package (LQFP64) measuring 10 × 10 × 1.4 mm (SOT314-2), with 64 leads and exposed thermal pad. All I/O pins are 5 V tolerant; analog pins (VDDA, VSSA, VREF, RTCX1/2, ADC/DAC channels) require separate analog power and ground routing.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P0.0/TXD0/PWM1 | UART0 transmit / PWM output | Primary serial debug interface; PWM1 usable for motor control or LED dimming |
| P0.25/AOUT/AD0.4 | DAC output / ADC input | Analog output active only when DAC enabled; digital I/O disabled during DAC use |
| P0.21–P0.22/AD1.6–AD1.7 | ADC1 inputs | Two of eight AD1 channels; available only on LPC2144/46/48 variants |
| D+/D− | USB differential pair | Full-speed USB 2.0 signaling; requires 1.5 kΩ pull-up on D+ for SoftConnect enumeration |
| P0.31/UP_LED/CONNECT | USB status indicator / SoftConnect control | Open-drain output; drives external LED; toggles 1.5 kΩ resistor for software-controlled USB attach |
| RESET | Active-low reset input | 5 V tolerant TTL input with hysteresis; initiates cold boot and peripheral reset |
Key Features
| Feature | Design Value |
|---|---|
| In-System Programming (ISP) | Enables flash reprogramming via UART0 without external programmer; supports sector erase (400 ms) and 256 B write (1 ms) |
| EmbeddedICE RT & Trace | Real-time debugging via JTAG; trace port (P1.16–P1.24) captures instruction flow for performance analysis |
| Vectored Interrupt Controller (VIC) | 32 priority-configurable IRQ sources with automatic vector fetch; reduces interrupt latency to <1 µs |
| Low-power RTC | Independent 32 kHz oscillator domain with VBAT backup; maintains time across main power loss |
| Peripheral clock scaling | Individual enable/disable and clock dividers per peripheral (e.g., UART, SPI, timers) for fine-grained power optimization |
| Fast GPIO | 45 pins with 10 ns slew rate control and built-in 3 ns glitch filter on interrupt-capable pins (EINT0–EINT3) |
Applications
| Industrial Protocol Converter | Voice Recognition Front-End |
|---|---|
Use Scenario: Translating Modbus RTU over RS-485 to MQTT over Ethernet/Wi-Fi in edge gateways. IC Role / Device Role / Timing Role: Central processing unit managing dual UARTs, SPI-to-Ethernet bridge, and real-time packet parsing. Use Value: Dual 10-bit ADCs sample sensor analog outputs (e.g., temperature, pressure); 60 MHz CPU handles protocol stack overhead with margin. |
Use Scenario: Capturing and preprocessing audio signals from electret microphones in smart speaker OEM modules. IC Role / Device Role / Timing Role: Analog front-end controller digitizing microphone output and performing spectral pre-filtering before DSP offload. Use Value: 14-channel ADC supports multi-mic beamforming; USB 2.0 Full-speed streams processed audio to host PC for ML inference. |
| Access Control Terminal | Point-of-Sale Peripheral |
Use Scenario: Secure door entry system with RFID reader, keypad, and biometric sensor interfacing. IC Role / Device Role / Timing Role: Security-critical controller executing encrypted credential validation and real-time lock actuation. Use Value: 5 V-tolerant GPIO directly interfaces legacy 5 V peripherals (RFID modules, solenoid drivers); ISP enables secure OTA firmware updates. |
Use Scenario: Compact barcode scanner or magnetic stripe reader integrated into retail POS terminals. IC Role / Device Role / Timing Role: Embedded host managing optical sensor interface, motor control (for auto-feed), and USB HID communication. Use Value: Single 10-bit DAC generates precise analog reference for CCD sensor bias; USB device mode presents as standard HID class to host OS. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LPC2148FBD64 | 512 kB flash, 32 kB + 8 kB shared USB RAM, same dual ADC/DAC/USB features | Supports larger firmware images and USB DMA-accelerated data transfers | Select when firmware exceeds 128 kB or USB bulk throughput >1 MB/s is required |
| LPC1769FBD100 | Cortex-M3 core, 512 kB flash, 64 kB RAM, USB Host/Device, no DAC, 8-channel 12-bit ADC | Higher performance (100 MHz), richer peripheral set, but no integrated DAC or SoftConnect USB | Select for new designs needing USB host capability or higher computational throughput; requires PCB redesign |
Compared with LPC2144FBD64, LPC2148FBD64 offers scalable flash and USB DMA for data-intensive endpoints, while LPC1769FBD100 provides modern Cortex-M3 architecture and USB host support-but sacrifices the integrated DAC and pin-compatible upgrade path.
Availability
LPC2144FBD64 is available at Aetrix Electronics and suitable for industrial protocol converters, voice recognition front-ends, and access control terminals requiring stable component supply, long-term lifecycle assurance, and verified 5 V-tolerant I/O interoperability.
Supply support for LPC2144FBD64 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 LPC214x family was designed for cost-sensitive, space-constrained embedded systems requiring ARM performance, rich analog integration (dual ADC, DAC), and USB device functionality in a tiny LQFP64 package.
FAQ
What is the maximum ADC sampling rate supported by the LPC2144FBD64?
The LPC2144FBD64 achieves a minimum conversion time of 2.44 µs per channel across both ADCs, enabling up to ~409 kHz aggregate sampling rate when interleaving AD0 and AD1. This is confirmed in the datasheet Section 2.1 and applies specifically to the LPC2144FBD64 variant with dual 10-bit ADCs. Real-world throughput depends on software overhead and channel configuration in the ADC control registers.
Does the LPC2144FBD64 support USB host mode?
No, the LPC2144FBD64 implements only a USB 2.0 Full-speed device controller-not a host or OTG controller. It can enumerate as a CDC, HID, or custom device using its 2 kB endpoint RAM, but cannot control USB peripherals. This limitation is consistent across all LPC214x variants; USB host capability requires migration to the LPC17xx or LPC18xx families.
Can the DAC output on the LPC2144FBD64 drive a load directly?
The DAC output (AOUT on P0.25) has a typical output impedance of 10 kΩ and is specified to drive loads ≥10 kΩ with ≤1 LSB error. For driving lower-impedance loads (e.g., op-amp inputs, filters), an external buffer amplifier is required. This behavior is documented in the LPC2141_42_44_46_48 datasheet Section 6.11 and applies identically to the LPC2144FBD64.
Is the LPC2144FBD64 pin-compatible with other LPC214x variants?
Yes, all LPC214x FBD64 variants-including LPC2141FBD64, LPC2142FBD64, LPC2144FBD64, LPC2146FBD64, and LPC2148FBD64-share identical LQFP64 pinouts and mechanical footprint (SOT314-2). Functional differences (e.g., flash size, ADC count, USB DMA) do not affect pin assignment or electrical compatibility, enabling drop-in replacement within the same package variant.
What debug interfaces are available on the LPC2144FBD64?
The LPC2144FBD64 supports JTAG (TRST, TCK, TMS, TDI, TDO on P1.31, P1.29, P1.30, P1.28, P1.27) and EmbeddedICE RT for real-time breakpoint and watchpoint debugging. It also includes an 8-bit trace port (TRACEPKT0–3 and TRACESYNC on P1.16–P1.20, P1.24) for instruction flow capture. These interfaces are fully functional and electrically identical to those on the LPC2144FBD64 datasheet-specified silicon.
LPC2144FBD64,151 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Package/Case:
- 64-LQFP
- Series:
- LPC2100
- Packaging:
- Tray
- Product Status:
- Not For New Designs
- Programmable:
- Not Verified
- Core Processor:
- ARM7®
- Core Size:
- 16/32-Bit
- Speed:
- 60MHz
- Connectivity:
- I2C, Microwire, SPI, SSI, SSP, UART/USART, USB
- Peripherals:
- Brown-out Detect/Reset, POR, PWM, WDT
- Number of I/O:
- 45
- Program Memory Size:
- 128KB (128K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 16K x 8
- Voltage - Supply (Vcc/Vdd):
- 3V ~ 3.6V
- Data Converters:
- A/D 14x10b; D/A 1x10b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
LPC2144FBD64,151 FAQ
1.How can I place an order for LPC2144FBD64,151 through Aetrix?
Please submit a Request for Quotation (RFQ) for LPC2144FBD64,151 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 LPC2144FBD64,151 reliable?
The price and inventory of LPC2144FBD64,151 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LPC2144FBD64,151 is usually 5 days.
3.What payment methods are accepted for LPC2144FBD64,151?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LPC2144FBD64,151 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LPC2144FBD64,151?
LPC2144FBD64,151 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LPC2144FBD64,151 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 LPC2144FBD64,151?
For technical support, including LPC2144FBD64,151 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LPC2144FBD64,151 requirements.
6.How does Aetrix verify that LPC2144FBD64,151 is sourced from the original manufacturer or authorized distributors?
All LPC2144FBD64,151 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 LPC2144FBD64,151 meets industry standards.
7.What is the process for return or replacement of LPC2144FBD64,151?
All LPC2144FBD64,151 units undergo pre-shipment inspection (PSI). If there is an issue with LPC2144FBD64,151, 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 LPC2144FBD64,151 part is unused and in its original packaging.
Return procedure for LPC2144FBD64,151:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LPC2144FBD64,151 Tags
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