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NXP Semiconductors LPC2138FBD64/01,15
- Part No.:
- LPC2138FBD64/01,15
- Manufacturer:
- NXP Semiconductors
- Category:
- Microcontrollers
- Package:
- 64-LQFP
- Datasheet:
-
LPC2138FBD64/01,15.pdf
- Description:
- IC MCU 16/32B 512KB FLASH 64LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,096
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Product details
Overview
LPC2138FBD64/01 from NXP Semiconductors is a 16/32-bit ARM7TDMI-S microcontroller in LQFP64 package with 512 kB flash, 32 kB SRAM, dual 10-bit ADCs (16-channel total), single 10-bit DAC, and 47 GPIO pins - deployed in industrial control systems requiring real-time analog acquisition, PWM motor drive, and protocol conversion.
For engineers reviewing the LPC2138FBD64/01 datasheet, LPC2138FBD64/01 pinout, LPC2138FBD64/01 application, or LPC2138FBD64/01 equivalent, this page delivers verified technical context, validated pin functions, confirmed peripheral timing behavior, and real-world selection guidance for embedded control designs operating at 60 MHz with 3.3 V ±10 % supply.
Technical Context
The LPC2138FBD64/01 implements an ARM7TDMI-S core with Thumb instruction set support, enabling 32-bit code execution at 60 MHz via a 128-bit wide memory interface and accelerator architecture. Its dual 8-channel 10-bit ADCs achieve 2.44 µs per channel conversion time, and the dedicated result registers reduce interrupt overhead in high-speed sampling.
Hardware-accelerated UART0/1 include fractional baud rate generators and full handshake flow control; Fast GPIO ports deliver up to 3.5× faster pin toggling than earlier LPC213x variants, while the vectored interrupt controller supports configurable priorities and vector addresses for deterministic real-time response.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | ARM7TDMI-S 16/32-bit RISC processor with Thumb mode support for 65 % code size reduction without significant performance penalty. |
| Max Clock Speed | 60 MHz via on-chip PLL with 100 µs settling time - enables real-time execution of control loops and communication stacks. |
| Memory | 512 kB on-chip flash (100,000 erase/write cycles, 20-year retention) and 32 kB static RAM accessible as 8/16/32-bit - sufficient for complex firmware with data logging buffers. |
| Analog Peripherals | Dual 10-bit ADCs (AD0 and AD1), 16 total inputs, 2.44 µs conversion time; single 10-bit DAC (AOUT) - supports closed-loop analog sensing and actuation. |
| Digital I/O & Timers | 47 GPIO pins (5 V tolerant), nine external interrupt-capable pins; two 32-bit timers (four capture/compare channels each), six PWM outputs, watchdog - suitable for multi-axis motor control and event-driven monitoring. |
| Serial Interfaces | Two UARTs (16C550-compatible with hardware flow control), two Fast I²C-bus (400 kbit/s), SPI/SSP, and trace/debug interfaces (EmbeddedICE RT, ETM) - enables gateway functionality across heterogeneous protocols. |
Pinout & Package
Package: LQFP64 (plastic low profile quad flat package; 64 leads; body 10 × 10 × 1.4 mm; SOT314-2). Pinout conforms to Figure 4 (LPC2134/36/38 LQFP64 configuration) and Table 3 of NXP datasheet Rev. 5.1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P0.0/TXD0/PWM1 | UART0 transmit / PWM output | Primary serial debug interface or motor control signal generation; open-drain capable when configured for I²C. |
| P0.27/AD0.0/CAP0.1/MAT0.1 | ADC0 input / Timer0 capture/match | Analog sensor input with simultaneous timer-triggered sampling or edge detection for encoder feedback. |
| P0.25/AD0.4/AOUT | ADC0 input / DAC output | Shared pin: digital section disabled when AOUT active - enables analog output for calibration or reference voltage generation. |
| P1.27/TDO | JTAG test data output | Required for boundary scan and real-time debugging; operates with internal pull-up and 5 V tolerance. |
| VDDA / VSSA / VREF | Analog power & reference | Isolated 3.3 V analog supply and reference path essential for <±1 LSB ADC/DAC accuracy; must be routed separately from digital planes. |
Key Features
| Feature | Design Value |
|---|---|
| Fast GPIO architecture | Port pin toggle up to 3.5× faster than base LPC213x - critical for bit-banged protocols or high-frequency PWM edge alignment. |
| Dedicated ADC result registers | Eliminates CPU read-modify-write overhead during burst sampling - reduces latency in real-time control loops. |
| Fractional baud rate UARTs | Enables precise standard and non-standard baud rates (e.g., 115200, 921600) without external clock dividers or timing error accumulation. |
| On-chip PLL with 100 µs lock time | Allows rapid clock domain switching during low-power mode exit - supports responsive wake-up from Power-down state. |
| 5 V tolerant I/O with glitch filtering | Built-in 3 ns pulse rejection on interrupt-capable pins - improves robustness in electrically noisy industrial environments. |
Applications
| Industrial Motor Control | Protocol Conversion Gateway |
|---|---|
Use Scenario: Closed-loop speed/position control of BLDC motors using Hall-effect sensors and three-phase PWM. IC Role / Device Role / Timing Role: Real-time execution of FOC algorithms, synchronized ADC sampling of current/voltage, and six-channel complementary PWM generation with dead-time insertion. Use Value: 60 MHz ARM7TDMI-S core + dual ADCs + six PWM outputs enable sub-10 µs control loop latency and 10-bit resolution torque regulation. |
Use Scenario: Bridging Modbus RTU (RS-485) to CANopen or Ethernet/IP in factory automation networks. IC Role / Device Role / Timing Role: Dual UARTs handle serial protocol framing; Fast I²C and SPI interface local sensors/EEPROM; SRAM buffers packetized data. Use Value: Hardware flow control and fractional baud rate generators ensure reliable 115.2 kbps Modbus timing; 32 kB SRAM accommodates multi-packet buffering. |
| Medical Vital Sign Monitor | Low-Power Remote Sensor Node |
Use Scenario: Portable ECG device acquiring lead-II differential signals and deriving heart rate/respiratory rate. IC Role / Device Role / Timing Role: Simultaneous sampling of multiple analog channels (ECG, SpO₂, temperature); real-time digital filtering; LCD display driving via GPIO. Use Value: Dual 10-bit ADCs with 2.44 µs conversion time support >1 kHz sampling; 32 kB SRAM stores waveform history for arrhythmia analysis. |
Use Scenario: Battery-powered environmental node measuring temperature, humidity, and CO₂ with periodic LoRaWAN transmission. IC Role / Device Role / Timing Role: Low-power operation (Idle/Power-down modes); RTC wake-up; BOD-triggered reset; GPIO-driven sensor enable sequencing. Use Value: Individual peripheral clock gating and BOD control reduce active current to <10 mA; RTC with 32 kHz crystal enables accurate 10-minute wake intervals. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LPC2368FBD100 | 100-pin LQFP, 512 kB flash, 96 kB SRAM, USB 2.0 device, Ethernet MAC - no DAC, same dual 10-bit ADCs. | Requires PCB redesign; suited for networked devices needing USB/Ethernet but not analog output. | Select when connectivity outweighs analog output need and layout allows larger package. |
| LPC1769FBD100 | Cortex-M3 core, 512 kB flash, 64 kB SRAM, USB, Ethernet, 12-bit ADC (8 ch), no DAC - higher performance, different ISA. | Not drop-in; requires firmware porting; better for computationally intensive tasks but lacks integrated DAC. | Choose for new designs prioritizing processing headroom and modern toolchain support over legacy compatibility. |
Compared with LPC2138FBD64/01, LPC2368FBD100 adds USB/Ethernet but removes DAC and increases footprint; LPC1769FBD100 offers Cortex-M3 performance and richer peripherals but mandates software migration and loses DAC functionality - both require board-level changes and firmware adaptation.
Availability
LPC2138FBD64/01 is available at Aetrix Electronics and suitable for industrial motor control, medical vital sign monitoring, and protocol conversion gateway applications requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.
Supply support for LPC2138FBD64/01 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 company headquartered in Eindhoven, Netherlands, specializing in secure connectivity solutions for automotive, industrial, and IoT markets.
The LPC213x/01 product line was designed for cost-sensitive, resource-constrained embedded control applications demanding high analog integration, real-time responsiveness, and low-power operation in compact LQFP64/HVQFN64 packages.
FAQ
What is the maximum operating frequency of the LPC2138FBD64/01?
The LPC2138FBD64/01 achieves a maximum CPU clock frequency of 60 MHz using its on-chip programmable PLL with 100 µs settling time. This frequency is sustained via a 128-bit wide memory interface and accelerator architecture, enabling full-speed 32-bit instruction execution without wait states under typical conditions.
Does the LPC2138FBD64/01 include a DAC, and which pin provides the output?
Yes, the LPC2138FBD64/01 includes a single 10-bit DAC. The analog output is available on pin P0.25 (AOUT), which shares the pin with AD0.4. When AOUT is enabled, the digital I/O function of P0.25 is disabled to prevent interference with analog output integrity.
How many analog input channels does the LPC2138FBD64/01 support, and what is their resolution?
The LPC2138FBD64/01 supports up to 16 analog input channels via two independent 10-bit ADCs (AD0 and AD1), each with eight inputs. Conversion time is as low as 2.44 µs per channel, and dedicated result registers minimize interrupt latency during high-speed acquisition sequences.
What debug and trace capabilities are integrated into the LPC2138FBD64/01?
The LPC2138FBD64/01 integrates EmbeddedICE RT and Embedded Trace Module (ETM) interfaces, supporting real-time debugging with on-chip RealMonitor software and high-speed instruction execution tracing. JTAG pins (TCK, TMS, TDI, TDO, TRST, RTCK) and trace-specific pins (TRACEPKT0–3, TRACESYNC, TRACECLK) are fully implemented in the LQFP64 package.
Is the LPC2138FBD64/01 pin-compatible with other members of the LPC213x family?
Yes, the LPC2138FBD64/01 shares identical LQFP64 pinout and electrical characteristics with LPC2134FBD64/01 and LPC2136FBD64/01. All use the same SOT314-2 package and pin configuration per Figure 4, enabling hardware reuse across flash/RAM variants within the /01 enhancement group.
LPC2138FBD64/01,15 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Package/Case:
- 64-LQFP
- Series:
- LPC2100
- Packaging:
- Tray
- Product Status:
- Discontinued at Digi-Key
- Programmable:
- Not Verified
- Core Processor:
- ARM7®
- Core Size:
- 16/32-Bit
- Speed:
- 60MHz
- Connectivity:
- I2C, Microwire, SPI, SSI, SSP, UART/USART
- Peripherals:
- Brown-out Detect/Reset, POR, PWM, WDT
- Number of I/O:
- 47
- Program Memory Size:
- 512KB (512K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 32K x 8
- Voltage - Supply (Vcc/Vdd):
- 3V ~ 3.6V
- Data Converters:
- A/D 16x10b SAR; D/A 1x10b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
LPC2138FBD64/01,15 FAQ
1.How can I place an order for LPC2138FBD64/01,15 through Aetrix?
Please submit a Request for Quotation (RFQ) for LPC2138FBD64/01,15 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 LPC2138FBD64/01,15 reliable?
The price and inventory of LPC2138FBD64/01,15 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LPC2138FBD64/01,15 is usually 5 days.
3.What payment methods are accepted for LPC2138FBD64/01,15?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LPC2138FBD64/01,15 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LPC2138FBD64/01,15?
LPC2138FBD64/01,15 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LPC2138FBD64/01,15 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 LPC2138FBD64/01,15?
For technical support, including LPC2138FBD64/01,15 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LPC2138FBD64/01,15 requirements.
6.How does Aetrix verify that LPC2138FBD64/01,15 is sourced from the original manufacturer or authorized distributors?
All LPC2138FBD64/01,15 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 LPC2138FBD64/01,15 meets industry standards.
7.What is the process for return or replacement of LPC2138FBD64/01,15?
All LPC2138FBD64/01,15 units undergo pre-shipment inspection (PSI). If there is an issue with LPC2138FBD64/01,15, 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 LPC2138FBD64/01,15 part is unused and in its original packaging.
Return procedure for LPC2138FBD64/01,15:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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