My Inquiry
My Account
NXP Semiconductors LPC2138FHN64,557
- Part No.:
- LPC2138FHN64,557
- Manufacturer:
- NXP Semiconductors
- Category:
- Microcontrollers
- Package:
- 64-VFQFN Exposed Pad
- Datasheet:
-
LPC2138FHN64,557.pdf
- Description:
- IC MCU 16/32B 512KB FLSH 64HVQFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,972
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LPC2138FHN64,557 from NXP Semiconductors is a 16/32-bit ARM7TDMI-S microcontroller in HVQFN64 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 control, and multi-protocol serial gateways.
For engineers reviewing the LPC2138FHN64,557 datasheet, LPC2138FHN64,557 pinout, LPC2138FHN64,557 application, or LPC2138FHN64,557 equivalent, this page delivers verified technical context, validated pin functions for HVQFN64, confirmed ADC/DAC timing specs, and two field-tested alternative microcontrollers for migration or second-sourcing.
Technical Context
The LPC2138FHN64,557 implements an ARM7TDMI-S core with Thumb instruction set support, enabling 60 MHz operation via on-chip PLL (100 µs settling time) and delivering real-time interrupt response through vectored interrupt controller with configurable priorities. Its memory subsystem uses a 128-bit wide interface and accelerator to sustain full-speed 32-bit code execution.
It integrates dual 8-channel 10-bit ADCs (AD0 and AD1) with dedicated result registers to reduce interrupt overhead, plus a single 10-bit DAC (AOUT) on P0.25. Serial connectivity includes two UARTs with fractional baud rate generators, two Fast I²C-bus interfaces (400 kbit/s), SPI/SSP, and JTAG/trace support (EmbeddedICE RT + Embedded Trace).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | ARM7TDMI-S 16/32-bit RISC processor with Thumb mode; enables 65 % code size reduction vs. ARM without sacrificing 160 % performance over 16-bit alternatives. |
| Max Clock Speed | 60 MHz via programmable on-chip PLL; 100 µs settling time ensures rapid clock domain stabilization after wake-up or reconfiguration. |
| Flash Memory | 512 kB ISP/IAP flash; supports single-sector erase (400 ms) and 256 B programming (1 ms); rated for ≥100,000 cycles and 20-year data retention. |
| SRAM | 32 kB on-chip static RAM; accessible as 8/16/32-bit; used for critical variables, stack, and real-time buffers in industrial firmware. |
| ADC | Dual 10-bit, 8-channel SAR ADCs (AD0 & AD1); up to 16 analog inputs; conversion time as low as 2.44 µs per channel; dedicated result registers minimize CPU load. |
| DAC | Single 10-bit voltage-output DAC (AOUT on P0.25); provides programmable analog reference or control signal generation without external components. |
| I/O & Interrupts | 47 GPIO pins (5 V tolerant); nine external interrupt-capable pins (EINT0–EINT3, RI1/DCD1/DSR1/DTR1/CTS1/RTS1); supports edge/level-sensitive triggering. |
Pinout & Package
HVQFN64 (SOT804-2) package: 9 mm × 9 mm × 0.85 mm body, no leads, 64 copper terminals; thermal-enhanced construction for improved power dissipation in compact industrial modules.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P0.0/TXD0/PWM1 | UART0 transmit / PWM output | Primary debug/communication channel; PWM1 usable for LED dimming or basic motor control without peripheral resource conflict. |
| P0.25/AD0.4/AOUT | ADC0 input 4 / DAC output | Shared analog terminal: configured as AOUT when DAC enabled (digital I/O disabled); otherwise serves as high-impedance ADC input. |
| P0.27–P0.30 | AD0.0–AD0.3 | Four dedicated ADC0 inputs; always connected to pins; no multiplexing required for basic analog sensing. |
| P0.6/MOSI0/CAP0.2/AD1.0 | SSP master-out / Timer0 capture / ADC1 input | Multi-function pin supporting synchronous serial comms, event timing, or extended analog input (LPC2138 only). |
| VDDA / VSSA / VREF | Analog power / ground / reference | Isolated analog supply path essential for <1 LSB INL error in 10-bit conversions; VREF must match VDD within noise tolerance. |
Key Features
| Feature | Design Value |
|---|---|
| Fast GPIO | Port pin toggle up to 3.5× faster than legacy LPC213x; enables precise bit-banged protocols or real-time status signaling. |
| Dedicated ADC result registers | Eliminates need for software register reads during interrupt service; reduces latency and jitter in closed-loop control loops. |
| Fractional baud rate UARTs | UART0/1 support exact standard rates (e.g., 115200 bps) across wide crystal ranges; removes external clock dividers in modem designs. |
| Embedded Trace Interface | Hardware-accelerated instruction trace via TRACESYNC/TRACEPKT[3:0]/TRACECLK pins; enables non-intrusive real-time profiling in safety-critical firmware. |
| Low-power RTC with independent supply | VBAT-powered real-time clock retains time/date during main power loss; operates with dedicated 32 kHz oscillator for ±20 ppm accuracy. |
Applications
| Industrial Motor Control | Medical Sensor Hub |
|---|---|
Use Scenario: Compact PLC module controlling stepper motors and reading position feedback sensors. IC Role / Device Role / Timing Role: MCU executes PID loop at 1 kHz using dual ADCs for current/voltage sensing and six PWM outputs for H-bridge drive. Use Value: On-chip 512 kB flash stores multiple motion profiles; 32 kB SRAM buffers encoder data streams; 60 MHz core ensures deterministic loop timing. |
Use Scenario: Portable patient monitor aggregating ECG, SpO₂, and temperature signals. IC Role / Device Role / Timing Role: Central controller acquires analog biosignals via dual 10-bit ADCs, processes in real time, and transmits via UART/I²C to display unit. Use Value: Dedicated ADC result registers reduce interrupt latency below 5 µs; 5 V-tolerant GPIO simplifies front-end sensor interfacing; RTC maintains timestamp integrity. |
| Communication Gateway | Access Control Terminal |
Use Scenario: Protocol converter bridging RS-485 Modbus devices to Ethernet/Wi-Fi via external MAC. IC Role / Device Role / Timing Role: Handles serial framing, CRC validation, and packet translation using two UARTs, dual I²C, and SPI peripherals. Use Value: Fractional baud rate generators ensure interoperability with legacy field devices; 47 GPIO support LED indicators, relay drivers, and tamper switches. |
Use Scenario: Secure door controller with RFID reader, keypad, and biometric sensor. IC Role / Device Role / Timing Role: Manages authentication logic, drives solenoid lock via PWM, logs events to flash, and monitors battery-backed RTC. Use Value: 512 kB flash stores encrypted credential database and firmware updates; VBAT-supplied RTC guarantees audit trail continuity during mains failure. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LPC2368FBD100,557 | 100-pin LQFP; ARM7TDMI-S @ 72 MHz; 512 kB flash, 96 kB SRAM; USB 2.0 device; no DAC; enhanced Ethernet MAC. | Requires PCB redesign; suited for USB/Ethernet-connected gateways where LPC2138FHN64,557 lacks native high-speed interfaces. | Select when needing USB host/device or Ethernet PHY integration; not drop-in due to pin count and peripheral mismatch. |
| LPC1769FBD208,557 | 208-pin LQFP; Cortex-M3 @ 100 MHz; 512 kB flash, 64 kB SRAM; USB 2.0 host/device; Ethernet; no DAC; dual 12-bit ADCs (8+2 ch). | Higher performance, richer peripherals, but larger footprint and higher power; requires firmware porting from ARM7 to Cortex-M3. | Choose for new designs demanding >60 MHz throughput, USB host capability, or future-proof architecture; not pin-compatible. |
Compared with LPC2138FHN64,557, LPC2368FBD100,557 offers higher clock speed and USB but lacks DAC and requires layout change, while LPC1769FBD208,557 delivers Cortex-M3 efficiency and dual 12-bit ADCs at cost of increased complexity and no direct replacement path.
Availability
LPC2138FHN64,557 is available at Aetrix Electronics and suitable for industrial motor control, medical sensor hubs, and access control terminals requiring stable component supply across long production lifecycles.
Supply support for LPC2138FHN64,557 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 focused on secure connectivity solutions for automotive, industrial, and IoT applications.
The LPC213x family was designed for cost-sensitive, space-constrained embedded systems requiring real-time analog processing, multi-protocol serial communication, and low-power operation - targeting industrial automation and portable instrumentation.
FAQ
What is the maximum operating frequency of the LPC2138FHN64,557?
The LPC2138FHN64,557 achieves a maximum CPU clock frequency of 60 MHz using its on-chip programmable PLL. The PLL has a specified settling time of 100 µs, enabling rapid clock domain transitions during wake-up from Power-down mode or dynamic frequency scaling. This frequency is sustained by the 128-bit wide memory interface and accelerator architecture, allowing full-speed 32-bit code execution without wait states.
Does the LPC2138FHN64,557 support in-system programming (ISP)?
Yes, the LPC2138FHN64,557 supports In-System Programming (ISP) via its on-chip bootloader, accessible through UART0. It allows flash memory erasure (full chip or single sector in 400 ms) and programming (256 B in 1 ms) without removing the device from the target board. This capability enables field firmware updates and eliminates the need for external programmers during development or maintenance.
How many analog-to-digital converter channels does the LPC2138FHN64,557 provide?
The LPC2138FHN64,557 integrates two independent 10-bit successive approximation ADCs: ADC0 (8 channels: AD0.0–AD0.7) and ADC1 (8 channels: AD1.0–AD1.7), totaling 16 analog inputs. Conversion time is as low as 2.44 µs per channel. Dedicated result registers reduce interrupt overhead, making it suitable for high-throughput sampling in motor control or sensor fusion applications.
What package type is used for the LPC2138FHN64,557?
The LPC2138FHN64,557 uses the HVQFN64 (SOT804-2) package: a 9 mm × 9 mm × 0.85 mm thermally enhanced, leadless quad flat no-lead package with 64 copper terminals. This compact, low-profile package supports high-density PCB layouts and improved thermal performance compared to LQFP64, making it ideal for space-constrained industrial modules.
Can the LPC2138FHN64,557 generate analog output signals?
Yes, the LPC2138FHN64,557 includes a single 10-bit voltage-output DAC (AOUT) on pin P0.25. When enabled, this pin functions exclusively as an analog output - disabling its digital I/O capability. The DAC supports programmable update rates and is commonly used for generating reference voltages, audio tones, or control signals in closed-loop systems without external DAC components.
LPC2138FHN64,557 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Package/Case:
- 64-VFQFN Exposed Pad
- Series:
- LPC2100
- Packaging:
- Bag
- 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:
LPC2138FHN64,557 FAQ
1.How can I place an order for LPC2138FHN64,557 through Aetrix?
Please submit a Request for Quotation (RFQ) for LPC2138FHN64,557 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 LPC2138FHN64,557 reliable?
The price and inventory of LPC2138FHN64,557 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LPC2138FHN64,557 is usually 5 days.
3.What payment methods are accepted for LPC2138FHN64,557?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LPC2138FHN64,557 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LPC2138FHN64,557?
LPC2138FHN64,557 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LPC2138FHN64,557 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 LPC2138FHN64,557?
For technical support, including LPC2138FHN64,557 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LPC2138FHN64,557 requirements.
6.How does Aetrix verify that LPC2138FHN64,557 is sourced from the original manufacturer or authorized distributors?
All LPC2138FHN64,557 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 LPC2138FHN64,557 meets industry standards.
7.What is the process for return or replacement of LPC2138FHN64,557?
All LPC2138FHN64,557 units undergo pre-shipment inspection (PSI). If there is an issue with LPC2138FHN64,557, 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 LPC2138FHN64,557 part is unused and in its original packaging.
Return procedure for LPC2138FHN64,557:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LPC2138FHN64,557 Tags
-
ATTINY4-TSHR
Microchip Technology
-
ATTINY10-TSHR
Microchip Technology
-
ATTINY10-TS8R
Microchip Technology
-
ATTINY202-SSNR
Microchip Technology
-
ATTINY202-SSFR
Microchip Technology
-
ATTINY402-SSNR
Microchip Technology
-
PIC16F15213T-I/MF
Microchip Technology
-
PIC16F15213-E/MF
Microchip Technology
-
PIC10F200T-I/OT
Microchip Technology
-
ATTINY412-SSNR
Microchip Technology
-
PIC10F202T-I/OT
Microchip Technology
-
ATTINY404-SSNR
Microchip Technology
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
