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NXP Semiconductors LPC2103FBD48EL
- Part No.:
- LPC2103FBD48EL
- Manufacturer:
- NXP Semiconductors
- Category:
- Microcontrollers
- Package:
- 48-LQFP
- Datasheet:
-
LPC2103FBD48EL.pdf
- Description:
- IC MCU 16/32BIT 32KB FLSH 48LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,649
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Product details
Overview
LPC2103FBD48EL from NXP Semiconductors is a 32-bit ARM7TDMI-S microcontroller in LQFP48 package, featuring 32 kB flash, 8 kB SRAM, 10-bit 8-channel ADC with 2.44 µs conversion time, dual UARTs (16C550-compatible), two Fast I²C buses (400 kbit/s), SPI/SSP, and 32 fast 5 V-tolerant GPIO pins. It targets compact industrial control, protocol converters, and medical systems requiring real-time interrupt response and low-power operation.
For engineers reviewing the LPC2103FBD48EL datasheet, LPC2103FBD48EL pinout, LPC2103FBD48EL application, or LPC2103FBD48EL equivalent, key selection factors include its 70 MHz CPU clock via on-chip PLL, deep power-down mode with RTC retention (Rev. A+), ISP/IAP capability, vectored interrupt controller with configurable priorities, and support for Thumb/ARM dual instruction sets to balance code density and performance.
Technical Context
The LPC2103FBD48EL implements the ARM7TDMI-S core with 3-stage pipeline, supporting both 32-bit ARM and 16-bit Thumb instruction sets - enabling up to 30 % higher performance in ARM mode versus Thumb for critical ISR/DSP routines. Its 128-bit wide memory interface and accelerator architecture sustain full 70 MHz operation from internal flash.
Peripheral integration includes a vectored interrupt controller (VIC) with programmable priority assignment across FIQ, 16 vectored IRQs, and non-vectored IRQs; dual UARTs with fractional baud rate generators and full modem handshaking on UART1; and an ADC with dedicated result registers per channel to minimize interrupt latency.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | ARM7TDMI-S 32-bit RISC processor with Thumb support; enables deterministic real-time interrupt response and mixed-mode code optimization. |
| Max Clock Speed | 70 MHz via on-chip PLL (10–25 MHz crystal input); 100 µs settling time supports rapid frequency transitions during low-power wake-up. |
| Memory | 32 kB on-chip flash (100k erase/write cycles, 20-yr data retention) + 8 kB SRAM; both accessible as 8/16/32-bit; flash supports ISP/IAP. |
| ADC | 10-bit successive approximation ADC with 8 analog inputs; 2.44 µs conversion time per channel; dedicated result registers reduce CPU overhead. |
| Serial Interfaces | Two UARTs (16C550-compliant, 16-byte FIFOs, fractional baud rate), two Fast I²C (400 kbit/s), SPI, SSP; all share flexible pin-muxing via pin connect block. |
| GPIO & Interrupts | 32 fast 5 V-tolerant GPIO pins (P0.0–P0.31); up to 13 external interrupt sources (EINT0–EINT2, CAPx, MATx, RTC alarm); edge/level-sensitive triggering. |
| Power Modes | Idle, Power-down (RTC active), Deep power-down (Rev. A+, retains SRAM/RTC); wake-up via external interrupt or RTC event. |
Pinout & Package
Package: LQFP48 (SOT313-2), plastic low-profile quad flat package, 7 × 7 × 1.4 mm body, 48 leads.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P0.0/TXD0/MAT3.1 | UART0 transmit / Timer3 PWM output | Dual-function pin: primary serial TX for UART0; secondary PWM signal generation for motor control or dimming. |
| P0.2/SCL0/CAP0.0 | I²C0 clock / Timer0 capture input | Open-drain I²C bus clock line; also serves as edge-triggered timer capture for pulse-width measurement. |
| P0.22/AD0.0 | ADC channel 0 input | Analog input with built-in glitch filter (blocks <3 ns pulses); digital I/O disabled when ADC function selected. |
| P0.27/TRST/CAP2.0 | JTAG test reset / Timer2 capture input | Debug mode entry control (when DBGSEL=HIGH); also provides precise timing capture for external events on Timer2. |
| RST | Active-low reset input | TTL-compatible with hysteresis and 5 V tolerance; initiates hardware reset, forcing execution start at address 0x00000000. |
| VDD(3V3) | I/O power supply | 3.3 V supply for all digital I/O pads; must be ≥3.0 V for 5 V tolerance on compatible pins (e.g., P0.0–P0.31). |
| VDDA | Analog power supply | 3.3 V analog reference for ADC; electrically isolated from VDD(3V3) to minimize noise coupling into conversion results. |
Key Features
| Feature | Design Value |
|---|---|
| ARM7TDMI-S + Thumb instruction set | Enables 30 % faster execution of critical ISRs in ARM mode while retaining 65 % code size reduction in Thumb mode - ideal for memory-constrained embedded firmware. |
| On-chip 32 kB flash with ISP/IAP | Supports in-system programming and in-application programming; sector or full-chip erase in 100 ms, 256-byte write in 1 ms - enables field firmware updates without external programmer. |
| Dual Fast I²C interfaces (400 kbit/s) | Allows concurrent communication with multiple I²C peripherals (e.g., sensors, EEPROMs, RTCs); open-drain pins require external pull-ups but ensure bus compliance. |
| Vectored Interrupt Controller (VIC) | Configurable priority assignment across 16 vectored IRQ slots; reduces interrupt latency by eliminating software polling - critical for real-time control loops. |
| Deep power-down mode (Rev. A+) | Retains RTC and optionally SRAM content during ultra-low-power sleep; wake-up via external interrupt or RTC alarm - extends battery life in portable medical devices. |
Applications
| Industrial Control Gateway | Medical Sensor Interface |
|---|---|
|
Use Scenario: Protocol translation between Modbus RTU (RS-485) and I²C-based temperature/humidity sensors in HVAC monitoring panels. IC Role / Device Role / Timing Role: Central MCU handling UART-to-I²C bridging, real-time data aggregation, and local display refresh via GPIO. Use Value: Dual UARTs with hardware flow control (UART1) and dual I²C buses enable simultaneous legacy and modern sensor communication without external level shifters or bridge ICs. |
Use Scenario: Portable ECG front-end unit acquiring analog signals, performing baseline correction, and transmitting processed waveforms via UART to Bluetooth module. IC Role / Device Role / Timing Role: Signal acquisition controller with synchronized ADC sampling, interrupt-driven waveform processing, and low-latency UART transmission. Use Value: 10-bit ADC with 2.44 µs conversion and dedicated result registers minimizes CPU load during high-frequency sampling, preserving cycles for real-time filtering. |
| Compact Communication Converter | Low-Power Remote Monitoring Node |
|
Use Scenario: DIN-rail mounted converter translating RS-232 serial commands from SCADA master to SPI-driven relay driver ICs in substation automation. IC Role / Device Role / Timing Role: Serial protocol interpreter executing command parsing, SPI transaction scheduling, and status reporting via second UART. Use Value: 32 fast GPIOs and flexible peripheral pin-muxing allow direct SPI control of up to 8 relays while maintaining separate debug/monitoring UART channel. |
Use Scenario: Battery-powered environmental monitor logging temperature, humidity, and CO₂ every 5 minutes using RTC-triggered wake-up and deep power-down between samples. IC Role / Device Role / Timing Role: Ultra-low-power system controller managing sensor power sequencing, ADC conversions, and periodic wireless transmission. Use Value: Deep power-down mode with RTC retention draws <1 µA typical; wake-up via RTC alarm eliminates need for external real-time clock IC or timer circuitry. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LPC2106FBD48 | 64 kB flash, 16 kB SRAM, same peripherals and pinout; requires higher VDD(1V8) stability margin due to larger memory array. | Preferred for applications needing larger firmware image or runtime data buffers (e.g., OTA update staging area). | Select when >32 kB flash is required and PCB layout allows identical LQFP48 footprint. |
| LPC1114FHN33 | Cortex-M0 core, 32 kB flash, 4 kB SRAM, no RTC in base variant, single I²C, lower max clock (50 MHz); HVQFN33 package (33-pin). | Better suited for cost-sensitive, lower-complexity designs where ARM7 legacy toolchain compatibility is not required. | Choose for new designs prioritizing energy efficiency over ARM7 ecosystem continuity; not pin-compatible. |
Compared with LPC2103FBD48EL, LPC2106FBD48 offers double flash/SRAM for complex protocol stacks, while LPC1114FHN33 trades ARM7 compatibility for Cortex-M0 efficiency and smaller footprint - neither is pin-compatible, but both serve overlapping industrial sensing roles with distinct trade-offs in memory, power, and software ecosystem.
Availability
LPC2103FBD48EL is available at Aetrix Electronics and suitable for industrial control gateways, medical sensor interfaces, compact communication converters, and low-power remote monitoring nodes requiring stable component supply and long-term lifecycle support.
Supply support for LPC2103FBD48EL 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, with deep expertise in ARM-based microcontrollers and mixed-signal integration.
The LPC2100 series was designed specifically for space-constrained, low-power embedded systems requiring rich peripheral integration - especially communication gateways, protocol converters, and real-time control where ARM7 deterministic latency and ISP flexibility are critical.
FAQ
What is the maximum operating frequency of the LPC2103FBD48EL?
The LPC2103FBD48EL achieves a maximum CPU clock frequency of 70 MHz using its on-chip programmable PLL, which accepts crystal inputs from 10 MHz to 25 MHz and settles within 100 µs. This frequency is sustained across the full −40 °C to +85 °C industrial temperature range when powered with stable 3.3 V and 1.8 V supplies. The 128-bit memory interface ensures zero-wait-state execution at this speed from internal flash.
Does the LPC2103FBD48EL support in-system programming (ISP)?
Yes, the LPC2103FBD48EL supports full in-system programming via its UART0 or UART1 interface using the on-chip bootloader. It enables sector-wise or full-chip flash erase in 100 ms and 256-byte programming in 1 ms, allowing field firmware updates without removing the device from the PCB. The bootloader resides in protected ROM, leaving all 32 kB of flash available for user application code.
How many analog inputs does the ADC in the LPC2103FBD48EL support?
The LPC2103FBD48EL integrates a single 10-bit successive approximation ADC with eight analog input channels (AD0.0 through AD0.7), mapped to GPIO pins P0.22, P0.23, P0.24, P0.10, P0.11, P0.12, P0.25, and P0.26. Each channel has a dedicated result register to avoid interrupt latency during burst conversions, and the ADC operates across the full 0 V to 3.3 V input range referenced to VDDA.
Is the LPC2103FBD48EL pin-compatible with other members of the LPC210x family?
Yes, the LPC2103FBD48EL shares identical LQFP48 pinout and electrical characteristics with LPC2101FBD48 and LPC2102FBD48, differing only in flash (32 kB) and SRAM (8 kB) sizes. All three support the same peripheral mapping, register layout, and boot behavior - enabling hardware reuse across product variants with only firmware reconfiguration required.
What power-saving modes are available on the LPC2103FBD48EL?
The LPC2103FBD48EL offers Idle mode, Power-down mode (with RTC active), and Deep power-down mode (available in Revision A and higher). In Deep power-down, the RTC and optionally SRAM contents are retained while core logic is powered off, drawing less than 1 µA typical. Wake-up is supported via external interrupts (EINT0–EINT2) or RTC alarm, making it suitable for battery-operated sensor nodes.
LPC2103FBD48EL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Package/Case:
- 48-LQFP
- Series:
- LPC2100
- Packaging:
- Tray
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- ARM7®
- Core Size:
- 16/32-Bit
- Speed:
- 70MHz
- Connectivity:
- I2C, Microwire, SPI, SSI, SSP, UART/USART
- Peripherals:
- POR, PWM, WDT
- Number of I/O:
- 32
- Program Memory Size:
- 32KB (32K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 8K x 8
- Voltage - Supply (Vcc/Vdd):
- 1.65V ~ 1.95V
- Data Converters:
- A/D 8x10b SAR
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
LPC2103FBD48EL FAQ
1.How can I place an order for LPC2103FBD48EL through Aetrix?
Please submit a Request for Quotation (RFQ) for LPC2103FBD48EL 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 LPC2103FBD48EL reliable?
The price and inventory of LPC2103FBD48EL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LPC2103FBD48EL is usually 5 days.
3.What payment methods are accepted for LPC2103FBD48EL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LPC2103FBD48EL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LPC2103FBD48EL?
LPC2103FBD48EL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LPC2103FBD48EL 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 LPC2103FBD48EL?
For technical support, including LPC2103FBD48EL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LPC2103FBD48EL requirements.
6.How does Aetrix verify that LPC2103FBD48EL is sourced from the original manufacturer or authorized distributors?
All LPC2103FBD48EL 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 LPC2103FBD48EL meets industry standards.
7.What is the process for return or replacement of LPC2103FBD48EL?
All LPC2103FBD48EL units undergo pre-shipment inspection (PSI). If there is an issue with LPC2103FBD48EL, 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 LPC2103FBD48EL part is unused and in its original packaging.
Return procedure for LPC2103FBD48EL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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