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NXP Semiconductors LPC2138FHN64/01,55
- Part No.:
- LPC2138FHN64/01,55
- Manufacturer:
- NXP Semiconductors
- Category:
- Microcontrollers
- Package:
- 64-VFQFN Exposed Pad
- Datasheet:
-
LPC2138FHN64/01,55.pdf
- Description:
- IC MCU 16/32B 512KB FLSH 64HVQFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,440
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Product details
Overview
LPC2138FHN64/01 from NXP Semiconductors is a 16/32-bit ARM7TDMI-S microcontroller in HVQFN64 package, featuring 512 kB flash, 32 kB SRAM, dual 10-bit ADCs (16-channel total), single 10-bit DAC, and 47 GPIO with nine external interrupt pins - deployed in industrial control systems requiring real-time analog acquisition and PWM motor actuation.
For engineers reviewing the LPC2138FHN64/01 datasheet, LPC2138FHN64/01 pinout, LPC2138FHN64/01 application, or LPC2138FHN64/01 equivalent, key selection criteria include its 60 MHz CPU clock, 5 V-tolerant I/O, on-chip PLL with 100 µs settling time, dual UARTs with hardware flow control, and support for ISP/IAP firmware updates in-system.
Technical Context
The LPC2138FHN64/01 implements an ARM7TDMI-S core with Thumb instruction set support, enabling 32-bit performance at reduced code size - critical for memory-constrained embedded gateways. Its 128-bit wide memory interface and accelerator architecture sustain full 60 MHz operation without wait states.
It integrates two independent 8-channel 10-bit ADCs (AD0 and AD1) with dedicated result registers to minimize interrupt latency, plus a single 10-bit DAC (AOUT) on P0.25. The enhanced UART0/1 include fractional baud rate generators and auto-bauding, fully implemented in hardware without CPU overhead.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | ARM7TDMI-S 16/32-bit RISC processor with Thumb mode support for 30 % smaller code size at minimal performance loss. |
| Max Clock Speed | 60 MHz via on-chip PLL with 100 µs settling time - enables deterministic real-time response in motor control loops. |
| Flash Memory | 512 kB ISP/IAP flash - supports in-field firmware updates and secure bootloader execution without external programming hardware. |
| SRAM | 32 kB on-chip static RAM - sufficient for dual-buffered ADC acquisition, protocol stack, and real-time OS kernel. |
| ADC | Dual 10-bit 8-channel SAR ADCs (AD0/AD1), up to 16 inputs total, 2.44 µs conversion time per channel - suitable for multi-sensor monitoring. |
| DAC | Single 10-bit voltage-output DAC (AOUT) on P0.25 - provides precise analog setpoint generation for closed-loop control. |
| I/O & Interrupts | 47 GPIO pins (5 V tolerant), nine edge/level-sensitive external interrupt inputs - enables direct connection to industrial sensors and safety interlocks. |
Pinout & Package
HVQFN64 (SOT804-2) package: 9 mm × 9 mm × 0.85 mm, thermally enhanced, no leads, 64 terminals - optimized for compact industrial PCBs with high thermal density.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P0.0/TXD0/PWM1 | UART0 transmit / PWM output | Primary serial debug interface and motor speed control signal; TTL-level, 5 V tolerant. |
| P0.25/AD0.4/AOUT | ADC0 input 4 / DAC output | Shared analog terminal: configured as input for sensor voltage sampling or output for analog reference generation. |
| P0.27–P0.30 | ADC0 inputs 0–3 | Dedicated analog inputs with internal routing - no multiplexing required; supports simultaneous sampling of four analog signals. |
| P0.6/MOSI0/CAP0.2/AD1.0 | SSP master-out / Timer0 capture / ADC1 input | Multi-function pin supporting SPI communication, event timing, and second ADC bank - requires pin-select configuration. |
| VDDA / VSSA / VREF | Analog power / ground / reference | Isolated analog supply domain - mandatory separation from digital VDD/VSS to maintain 10-bit ADC/DAC accuracy. |
Key Features
| Feature | Design Value |
|---|---|
| Fast GPIO | Port pin toggle up to 3.5× faster than base LPC213x - reduces software overhead in bit-banged protocols like 1-Wire or custom sensor interfaces. |
| Dedicated ADC result registers | Eliminates read-modify-write cycles during interrupt service - cuts ADC interrupt latency by >40 % in high-frequency sampling applications. |
| Fractional baud rate UARTs | UART0/1 support exact standard and non-standard baud rates (e.g., 38.4 kbps, 115.2 kbps) without external crystal changes - simplifies modem and gateway designs. |
| EmbeddedICE RT + Trace | Real-time debugging and instruction trace via JTAG - enables cycle-accurate analysis of ISR timing and peripheral interaction in safety-critical firmware. |
| Power optimization | Idle and Power-down modes with wake-up via external interrupt or Brown-Out Detector - extends battery life in portable instrumentation. |
Applications
| Industrial Motor Control | Smart Sensor Gateway |
|---|---|
Use Scenario: Closed-loop control of BLDC motors in HVAC actuators using PWM outputs and current/voltage feedback. IC Role / Device Role / Timing Role: Real-time execution of FOC algorithms, synchronized ADC sampling of phase currents, and generation of six PWM outputs via dedicated PWM unit. Use Value: 60 MHz ARM7TDMI-S core ensures sub-10 µs loop execution; dual ADCs enable simultaneous current and voltage measurement for accurate torque regulation. |
Use Scenario: Aggregation of temperature, humidity, and pressure data from multiple I²C/SPI sensors into Modbus TCP or MQTT payloads. IC Role / Device Role / Timing Role: Protocol converter bridging legacy analog/digital sensors to Ethernet/Wi-Fi modules via UART/SSP/I²C interfaces. Use Value: 32 kB SRAM buffers sensor data during network outages; dual UARTs with hardware flow control prevent packet loss in high-throughput telemetry. |
| Medical Vital Sign Monitor | Access Control Terminal |
Use Scenario: Portable pulse oximeter acquiring photodiode signals and driving LED drivers with precise timing. IC Role / Device Role / Timing Role: Analog front-end controller with synchronized 10-bit ADC sampling and 10-bit DAC-driven LED bias current modulation. Use Value: Dedicated AOUT pin (P0.25) delivers stable analog drive; 2.44 µs ADC conversion supports >400 kHz sampling for artifact-free plethysmography. |
Use Scenario: Secure door entry system reading RFID cards, driving electromagnetic locks, and logging events to local flash. IC Role / Device Role / Timing Role: Main controller managing contactless reader interface, GPIO-based lock actuation, tamper detection, and encrypted EEPROM storage. Use Value: 47 GPIO with 5 V tolerance directly interface legacy 12 V lock circuits and 3.3 V logic; 512 kB flash stores firmware, keys, and audit logs securely. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LPC2138FBD64/01 | LQFP64 package (10 mm × 10 mm × 1.4 mm); identical electrical specs and pinout mapping but larger footprint and lower thermal performance. | Suitable for prototyping or low-volume boards where thermal constraints are less stringent and manual rework is preferred. | Select when board space permits and thermal management uses external heatsinking or lower ambient temperatures. |
| LPC2368FBD100 | 100-pin LQFP; ARM7TDMI-S core; 512 kB flash, 96 kB SRAM; adds USB Device, Ethernet MAC, and CAN controller - not present in LPC2138FHN64/01. | Required for applications needing native USB device connectivity or industrial fieldbus integration beyond UART/I²C/SSP. | Choose only if USB or Ethernet functionality is mandatory; otherwise, LPC2138FHN64/01 offers better cost and size efficiency for pure control+analog tasks. |
Compared with LPC2138FBD64/01, the LPC2138FHN64/01 delivers superior thermal dissipation in space-constrained industrial enclosures; compared with LPC2368FBD100, it avoids over-specification and BOM cost inflation when USB/Ethernet are unnecessary.
Availability
LPC2138FHN64/01 is available at Aetrix Electronics and suitable for industrial motor control, smart sensor gateways, medical vital sign monitors, and access control terminals requiring stable component supply across extended production lifecycles.
Supply support for LPC2138FHN64/01 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 leader specializing in secure connectivity solutions for automotive, industrial, and IoT applications, with deep expertise in ARM-based microcontrollers.
The LPC213x/01 product line targets cost-sensitive, real-time embedded systems requiring high analog integration, low-power operation, and robust debug capabilities - especially in industrial automation and portable instrumentation.
FAQ
What is the maximum operating frequency of the LPC2138FHN64/01?
The LPC2138FHN64/01 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 - enabling deterministic real-time execution without wait states in the LPC2138FHN64/01's flash and SRAM subsystems.
Does the LPC2138FHN64/01 support in-system programming (ISP)?
Yes, the LPC2138FHN64/01 supports full In-System Programming (ISP) and In-Application Programming (IAP) via its on-chip bootloader. It allows single-sector or full-chip flash erase in 400 ms and 256-byte programming in 1 ms - enabling field firmware updates, secure bootloaders, and runtime parameter storage without external programmers.
How many analog-to-digital converter channels does the LPC2138FHN64/01 provide?
The LPC2138FHN64/01 integrates two independent 10-bit successive-approximation ADCs: ADC0 (8 channels) and ADC1 (8 channels), totaling 16 analog inputs. Conversion time is as low as 2.44 µs per channel, and dedicated result registers reduce interrupt latency - critical for high-speed sensor acquisition in the LPC2138FHN64/01.
What package type is used for the LPC2138FHN64/01?
The LPC2138FHN64/01 uses the HVQFN64 (SOT804-2) package: a 9 mm × 9 mm × 0.85 mm thermally enhanced, leadless quad flat package with 64 terminals. This package provides superior thermal performance and smaller PCB footprint versus the LQFP64 variant, making it ideal for compact, high-density industrial designs.
Can the LPC2138FHN64/01 generate analog output signals?
Yes, the LPC2138FHN64/01 includes a single 10-bit voltage-output DAC (AOUT) on pin P0.25. When configured as AOUT, the digital I/O function of that pin is disabled - ensuring clean analog output for precision applications such as LED bias control or reference voltage generation in the LPC2138FHN64/01.
LPC2138FHN64/01,55 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Package/Case:
- 64-VFQFN Exposed Pad
- Series:
- LPC2100
- Packaging:
- Tray
- Product Status:
- Obsolete
- 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:
LPC2138FHN64/01,55 FAQ
1.How can I place an order for LPC2138FHN64/01,55 through Aetrix?
Please submit a Request for Quotation (RFQ) for LPC2138FHN64/01,55 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 LPC2138FHN64/01,55 reliable?
The price and inventory of LPC2138FHN64/01,55 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LPC2138FHN64/01,55 is usually 5 days.
3.What payment methods are accepted for LPC2138FHN64/01,55?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LPC2138FHN64/01,55 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LPC2138FHN64/01,55?
LPC2138FHN64/01,55 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LPC2138FHN64/01,55 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 LPC2138FHN64/01,55?
For technical support, including LPC2138FHN64/01,55 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LPC2138FHN64/01,55 requirements.
6.How does Aetrix verify that LPC2138FHN64/01,55 is sourced from the original manufacturer or authorized distributors?
All LPC2138FHN64/01,55 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 LPC2138FHN64/01,55 meets industry standards.
7.What is the process for return or replacement of LPC2138FHN64/01,55?
All LPC2138FHN64/01,55 units undergo pre-shipment inspection (PSI). If there is an issue with LPC2138FHN64/01,55, 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 LPC2138FHN64/01,55 part is unused and in its original packaging.
Return procedure for LPC2138FHN64/01,55:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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