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NXP Semiconductors LPC2138FBD64/01EL
- Part No.:
- LPC2138FBD64/01EL
- Manufacturer:
- NXP Semiconductors
- Category:
- Microcontrollers
- Package:
- 64-LQFP
- Datasheet:
-
LPC2138FBD64/01EL.pdf
- Description:
- IC MCU 16/32B 512KB FLASH 64LQFP
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
LPC2138FBD64/01EL from NXP Semiconductors is a 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, two 32-bit timers, six PWM outputs, and UART/I²C/SPI/SSP interfaces - deployed in industrial control systems requiring high analog I/O density and real-time deterministic response.
For engineers reviewing the LPC2138FBD64/01EL datasheet, LPC2138FBD64/01EL pinout, LPC2138FBD64/01EL application, or LPC2138FBD64/01EL equivalent, key selection criteria include its 60 MHz CPU clock, 5 V-tolerant GPIO (47 pins), on-chip PLL with 100 µs settling time, RTC with independent 32 kHz clock, and ISP/IAP capability enabling field firmware updates without external programming hardware.
Technical Context
The LPC2138FBD64/01EL implements the ARM7TDMI-S core with Thumb instruction set support for 30 % code size reduction at minimal performance cost. Its memory subsystem features a 128-bit wide interface and accelerator architecture enabling full 60 MHz execution speed from on-chip flash.
Peripherals are organized across AHB and APB buses: the AHB bridge connects flash/SRAM to the CPU, while APB peripherals include dual UARTs with fractional baud rate generators, two Fast-mode I²C-bus controllers (400 kbit/s), and dual 8-channel 10-bit ADCs with dedicated result registers to reduce interrupt latency.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | ARM7TDMI-S 32-bit RISC processor with Thumb mode; enables compact firmware and deterministic real-time interrupt response. |
| Max Clock Speed | 60 MHz via on-chip PLL (100 µs settling time); supports time-critical control loops and high-throughput serial protocols. |
| Memory | 512 kB on-chip flash (100k erase/write cycles, 20-yr retention) + 32 kB SRAM; sufficient for complex protocol stacks and data buffering. |
| Analog Peripherals | Dual 10-bit ADCs (8 channels each, 2.44 µs conversion), single 10-bit DAC (AOUT); enables simultaneous sensor acquisition and analog output control. |
| Digital I/O | 47 GPIO pins (5 V tolerant), up to nine external interrupt inputs (edge/level sensitive); suitable for direct interfacing with industrial sensors and actuators. |
| Serial Interfaces | Two UARTs (16C550 compatible, hardware flow control), two Fast I²C (400 kbit/s), SPI, SSP; supports multi-protocol gateway design without external transceivers. |
| Power Management | Idle and Power-down modes; wake-up via external interrupt or Brown-out Detector (BOD); meets low-power embedded system requirements. |
Pinout & Package
Package: LQFP64 (plastic low profile quad flat package; 64 leads; body 10 × 10 × 1.4 mm; SOT314-2).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P0.0/TXD0/PWM1 | UART0 transmit / PWM output | Primary serial debug channel or motor control signal; shared function requires pin-select configuration. |
| P0.27/AD0.0/CAP0.1/MAT0.1 | ADC0 input 0 / Timer0 capture/match | Analog sensor input with hardware-triggered timing capture; digital section disabled during ADC use. |
| P0.25/AD0.4/AOUT | ADC0 input 4 / DAC output | Configurable as analog input or voltage-controlled output (0–VREF); critical for closed-loop feedback circuits. |
| P0.30/AD0.3/EINT3/CAP0.0 | ADC0 input 3 / External interrupt / Timer0 capture | Enables synchronized sampling and event-driven wake-up from Power-down mode. |
| P1.27/TDO | JTAG test data output | Required for boundary-scan testing and real-time debugging via EmbeddedICE RT interface. |
Key Features
| Feature | Design Value |
|---|---|
| Fast GPIO ports | Port pin toggle up to 3.5× faster than base LPC213x; enables precise bit-banged protocols and high-frequency I/O signaling. |
| Dedicated ADC result registers | Reduces interrupt service overhead by eliminating read-modify-write cycles during rapid sampling sequences. |
| Fractional baud rate generators | Supports exact standard baud rates (e.g., 115200) across wide crystal frequency ranges without external dividers. |
| EmbeddedICE RT & Trace | Enables non-intrusive real-time instruction tracing and breakpoint-based debugging using on-chip RealMonitor software. |
| ISP/IAP via bootloader | Single-sector erase (400 ms) and 256 B programming (1 ms); allows secure over-the-air firmware updates in deployed systems. |
Applications
| Industrial Motor Control | Medical Sensor Hub |
|---|---|
Use Scenario: Closed-loop control of BLDC motors using PWM outputs, current sensing via ADC, and position feedback. IC Role / Device Role / Timing Role: Real-time execution engine managing 60 MHz control loop, ADC-triggered PWM update, and watchdog supervision. Use Value: Dual 10-bit ADCs sample 16 analog channels simultaneously; six PWM outputs drive gate drivers with <1 µs jitter tolerance. |
Use Scenario: Aggregation and preprocessing of ECG, temperature, and SpO₂ signals in portable diagnostic devices. IC Role / Device Role / Timing Role: Signal conditioning hub with synchronized ADC sampling, DAC-based reference generation, and USB-bridge-ready UART output. Use Value: 2.44 µs per-channel ADC conversion enables >200 kHz effective sampling; 32 kB SRAM buffers multi-second waveform datasets. |
| Smart Energy Gateway | Access Control Terminal |
Use Scenario: Protocol translation between Modbus RTU (RS-485), KNX, and wireless Zigbee modules in building automation. IC Role / Device Role / Timing Role: Multi-interface communication controller with dual UARTs, I²C sensor bus, and SPI flash storage interface. Use Value: Two hardware flow-controlled UARTs eliminate CPU overhead; Fast I²C (400 kbit/s) supports real-time sensor polling without blocking. |
Use Scenario: Biometric reader with fingerprint sensor, RFID tag interface, tamper detection, and relay-driven door lock actuation. IC Role / Device Role / Timing Role: Secure peripheral coordinator handling 5 V-tolerant GPIO for legacy readers, RTC for audit logging, and BOD for brown-out resilience. Use Value: 47 GPIO pins directly interface diverse peripherals; independent RTC power domain (VBAT) maintains time during main supply loss. |
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; higher power consumption. | Suitable for networked edge nodes requiring USB host/device or Ethernet connectivity - not drop-in compatible due to pin count and peripheral mismatch. | Select when USB/Ethernet interface is mandatory and board layout allows larger footprint. |
| LPC1769FBD100 | Cortex-M3 core, 512 kB flash, 64 kB SRAM, USB 2.0 host/device, Ethernet, 12-bit ADC; no DAC; higher clock (100 MHz) and power. | Targets next-generation designs needing higher compute throughput, richer peripherals, and modern ARM ecosystem tooling - incompatible instruction set and register map. | Choose for new designs prioritizing ARM Cortex toolchain support and future scalability over legacy code reuse. |
Compared with LPC2368FBD100 and LPC1769FBD100, the LPC2138FBD64/01EL offers optimal balance of analog integration (dual ADC + DAC), compact LQFP64 footprint, and deterministic ARM7 real-time behavior - making it ideal for cost-sensitive, space-constrained industrial and medical edge nodes where USB/Ethernet are unnecessary.
Availability
LPC2138FBD64/01EL is available at Aetrix Electronics and suitable for industrial motor control, medical sensor hubs, smart energy gateways, and access control terminals requiring stable component supply and long-term lifecycle assurance.
Supply support for LPC2138FBD64/01EL 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 applications.
The LPC213x/01 series was designed specifically for resource-constrained embedded systems demanding high analog integration, low power, and real-time determinism - targeting industrial control, medical instrumentation, and building automation markets.
FAQ
What is the maximum operating frequency of the LPC2138FBD64/01EL?
The LPC2138FBD64/01EL achieves a maximum CPU clock frequency of 60 MHz using its on-chip programmable PLL, which settles in 100 µs. This frequency is sustained via a 128-bit wide memory interface and accelerator architecture that enables full-speed 32-bit code execution from flash memory without wait states.
Does the LPC2138FBD64/01EL support in-system programming (ISP)?
Yes, the LPC2138FBD64/01EL supports In-System Programming via its on-chip bootloader, allowing flash memory to be programmed through UART0 without external hardware. It enables single-sector erase (400 ms) and 256-byte programming (1 ms), facilitating field firmware updates and secure remote maintenance of deployed LPC2138FBD64/01EL units.
How many analog-to-digital converter (ADC) channels does the LPC2138FBD64/01EL provide?
The LPC2138FBD64/01EL integrates two independent 10-bit ADCs (ADC0 and ADC1), each with eight input channels, for a total of 16 analog inputs. Conversion time is as low as 2.44 µs per channel, and dedicated result registers minimize interrupt latency - confirmed in the LPC2131/32/34/36/38 datasheet Rev. 5.1.
What package type is used for the LPC2138FBD64/01EL?
The LPC2138FBD64/01EL uses the LQFP64 package (SOT314-2): a plastic low-profile quad flat package with 64 leads and body dimensions of 10 × 10 × 1.4 mm. This package is pin-compatible with other LPC213x/01 variants in the same family and supports standard reflow soldering processes.
Is the LPC2138FBD64/01EL pin-compatible with earlier LPC2138 variants without the "/01" suffix?
No - the LPC2138FBD64/01EL belongs to the enhanced LPC213x/01 series, featuring faster GPIO, dedicated ADC result registers, fractional baud rate generators, and additional BOD control. While sharing the same LQFP64 footprint and core functionality, it is not a drop-in replacement for non-/01 variants due to differences in peripheral register mapping and timing behavior.
LPC2138FBD64/01EL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Package/Case:
- 64-LQFP
- Series:
- LPC2100
- Packaging:
- Tray
- Product Status:
- Active
- 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:
LPC2138FBD64/01EL FAQ
1.How can I place an order for LPC2138FBD64/01EL through Aetrix?
Please submit a Request for Quotation (RFQ) for LPC2138FBD64/01EL 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 LPC2138FBD64/01EL reliable?
The price and inventory of LPC2138FBD64/01EL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LPC2138FBD64/01EL is usually 5 days.
3.What payment methods are accepted for LPC2138FBD64/01EL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LPC2138FBD64/01EL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LPC2138FBD64/01EL?
LPC2138FBD64/01EL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LPC2138FBD64/01EL 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 LPC2138FBD64/01EL?
For technical support, including LPC2138FBD64/01EL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LPC2138FBD64/01EL requirements.
6.How does Aetrix verify that LPC2138FBD64/01EL is sourced from the original manufacturer or authorized distributors?
All LPC2138FBD64/01EL 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 LPC2138FBD64/01EL meets industry standards.
7.What is the process for return or replacement of LPC2138FBD64/01EL?
All LPC2138FBD64/01EL units undergo pre-shipment inspection (PSI). If there is an issue with LPC2138FBD64/01EL, 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 LPC2138FBD64/01EL part is unused and in its original packaging.
Return procedure for LPC2138FBD64/01EL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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