NXP Semiconductors LPC2103FBD48,118

Overview

LPC2103FBD48,118 from NXP Semiconductors is a 32-bit ARM7TDMI-S microcontroller in LQFP48 package with 32 kB flash, 8 kB SRAM, 10-bit 8-channel ADC, dual UARTs (one with full modem interface), two Fast I²C buses (400 kbit/s), SPI/SSP, and 32 fast 5 V-tolerant GPIO pins - deployed in industrial protocol converters and medical sensor interfaces.

For engineers reviewing the LPC2103FBD48,118 datasheet, LPC2103FBD48,118 pinout, LPC2103FBD48,118 application, or LPC2103FBD48,118 equivalent, key selection criteria include its 70 MHz max 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 32-bit timer subsystem supporting capture/compare/PWM across four timers.

Technical Context

The LPC2103FBD48,118 implements the ARM7TDMI-S core with dual instruction sets (32-bit ARM and 16-bit Thumb), enabling up to 30 % higher performance in ARM mode versus Thumb for critical ISR/DSP code. Its 128-bit wide memory interface and accelerator architecture support full-speed 70 MHz execution from flash.

Peripheral integration includes a vectored interrupt controller (VIC) with programmable priority assignment across FIQ/vectored/non-vectored IRQs, dual UARTs with fractional baud rate generators (16C550-compatible), and an ADC with dedicated result registers per channel to minimize interrupt overhead during burst conversion.

Key Specifications

Pinout & Package

Package: LQFP48 (plastic low-profile quad flat package; 48 leads; body 7 × 7 × 1.4 mm; SOT313-2).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar microcontroller applications.

Compared with LPC2102FBD48, the LPC2103FBD48,118 provides double flash and SRAM for larger firmware and data buffering; compared with LPC2103FHN48, it offers identical functionality in a standard LQFP package compatible with legacy assembly lines and manual prototyping.

Availability

LPC2103FBD48,118 is available at Aetrix Electronics and suitable for industrial protocol converters, medical sensor interfaces, embedded math coprocessors, and low-power remote monitoring nodes requiring stable component supply and long-term lifecycle support.

Supply support for LPC2103FBD48,118 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 LPC2100 series targets cost-sensitive, low-power embedded control applications requiring rich peripheral integration, real-time responsiveness, and robust debug infrastructure - especially where miniaturization and energy efficiency are critical.

FAQ

What is the maximum operating frequency of the LPC2103FBD48,118?

The LPC2103FBD48,118 achieves a maximum CPU clock frequency of 70 MHz using its on-chip PLL, which accepts crystal inputs from 10 MHz to 25 MHz and settles in 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 no wait states are required for flash execution at this speed.

Does the LPC2103FBD48,118 support in-system programming (ISP)?

Yes, the LPC2103FBD48,118 supports full in-system programming via its on-chip bootloader. It enables flash erasure (sector or chip-wide) in 100 ms and 256-byte programming in 1 ms through UART0 or UART1. The bootloader resides in protected ROM, leaving all 32 kB of flash available for user code - critical for field firmware updates without requiring external programmers.

How many analog inputs does the ADC in the LPC2103FBD48,118 support?

The LPC2103FBD48,118 integrates a single 10-bit successive approximation ADC with eight analog input channels (AD0.0–AD0.7), each mapped to dedicated GPIO pins (P0.22–P0.26, P0.10–P0.12). Conversion time is as low as 2.44 µs per channel, and each input has its own result register to eliminate software polling and reduce interrupt service latency.

Can the LPC2103FBD48,118 retain RTC operation during deep power-down?

Yes, the LPC2103FBD48,118 (Revision A and higher) supports deep power-down mode with optional RTC retention using the VBAT pin. When VBAT is supplied with 3.3 V, the RTC continues running with its independent 32.768 kHz oscillator (RTCX1/RTCX2), preserving timekeeping and alarm functionality while core logic and flash are powered off - enabling ultra-low-power wake-up scheduling.

What debug interface does the LPC2103FBD48,118 provide?

The LPC2103FBD48,118 features EmbeddedICE-RT debug support via a standard 5-pin JTAG interface (TCK, TMS, TDI, TDO, TRST), enabled automatically when DBGSEL is pulled high at reset. It works with the on-chip RealMonitor software to deliver real-time, non-intrusive debugging - including breakpoints, watchpoints, and memory inspection - without halting CPU execution or affecting system timing.