NXP Semiconductors LPC2131FBD64,151

Overview

LPC2131FBD64,151 from NXP Semiconductors is a 16/32-bit ARM7TDMI-S microcontroller in LQFP64 package with 32 kB flash, 8 kB SRAM, one 10-bit 8-channel ADC, no DAC, and 47 GPIO pins - deployed in access control systems, point-of-sale terminals, and industrial gateways requiring compact size and low power.

For engineers reviewing the LPC2131FBD64,151 datasheet, LPC2131FBD64,151 pinout, LPC2131FBD64,151 application, or LPC2131FBD64,151 equivalent, this page delivers verified technical context, validated pin functions, confirmed peripheral capabilities (UART0/1, dual 32-bit timers, I²C, SPI/SSP), and real-world selection guidance for embedded control designs operating at 3.3 V and −40 °C to +85 °C.

Technical Context

The LPC2131FBD64,151 implements an ARM7TDMI-S core with Thumb instruction set support, enabling 32-bit code execution at up to 60 MHz via a 128-bit wide memory interface and accelerator architecture. It integrates ISP/IAP flash programming with 400 ms sector erase and 1 ms 256-byte write times.

Its peripheral subsystem includes two UARTs with fractional baud rate generators and hardware handshake, dual 32-bit timers (four capture/compare channels each), vectored interrupt controller, and real-time clock with independent 32 kHz input - all mapped to a fixed 64-pin LQFP package with 5 V-tolerant GPIO and dedicated analog I/O pins (AD0.0–AD0.7).

Key Specifications

Pinout & Package

LPC2131FBD64,151 uses a plastic low-profile quad flat package (LQFP64), 10 × 10 × 1.4 mm body (SOT314-2), with 64 leads and 5 V-tolerant I/O pads featuring TTL levels, hysteresis, and 10 ns slew rate control.

Key Features

Applications

Equivalent & Alternatives

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

Compared with LPC2131FBD64,151, the LPC2132FBD64/01 adds DAC output for analog control tasks, while the LPC2138FBD64/01 doubles memory capacity and expands analog input capability - both retain identical LQFP64 packaging, 3.3 V operation, and −40 °C to +85 °C rating for drop-in compatibility in upgraded designs.

Availability

LPC2131FBD64,151 is available at Aetrix Electronics and suitable for access control, point-of-sale, and industrial gateway applications requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant sourcing.

Supply support for LPC2131FBD64,151 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 specializing in secure connectivity solutions for automotive, industrial, and IoT markets, with leadership in ARM-based microcontrollers and RF technologies.

The LPC213x family was designed for cost-sensitive, space-constrained embedded control applications demanding real-time responsiveness, mixed-signal integration, and field-upgradable firmware - targeting industrial automation, medical devices, and consumer electronics.

FAQ

What is the maximum operating frequency of the LPC2131FBD64,151?

The LPC2131FBD64,151 achieves a maximum CPU clock frequency of 60 MHz using its on-chip programmable PLL, which has a 100 µs settling time. This speed is enabled by a 128-bit wide memory interface and accelerator architecture that supports full-speed 32-bit code execution - making LPC2131FBD64,151 suitable for real-time control loops and high-throughput serial communication tasks.

Does the LPC2131FBD64,151 include a DAC?

No, the LPC2131FBD64,151 does not integrate a DAC. According to the official NXP datasheet, DAC functionality (AOUT) is only available in LPC2132 and higher variants (LPC2132FBD64/01, LPC2134FBD64/01, etc.). The LPC2131FBD64,151 features a single 10-bit 8-channel ADC but no analog output capability - users requiring DAC must select an alternative part such as LPC2132FBD64/01.

What package type is used for the LPC2131FBD64,151?

The LPC2131FBD64,151 uses a plastic low-profile quad flat package (LQFP64) with dimensions 10 × 10 × 1.4 mm (SOT314-2). It has 64 leads, 5 V-tolerant I/O pads with TTL levels and hysteresis, and supports standard reflow soldering processes - ensuring compatibility with mainstream PCB assembly lines and ease of prototyping on breakout boards.

How many external interrupt pins does the LPC2131FBD64,151 support?

The LPC2131FBD64,151 supports up to nine edge- or level-sensitive external interrupt inputs. These include EINT0–EINT3 (mapped to P0.1, P0.3, P0.7, P0.30), plus additional interrupt-capable pins via the pin connect block (e.g., P1.25/EXTIN0 and other GPIOs configured through VIC). This enables flexible event-driven system design for button presses, sensor triggers, and fault detection.

What debug interfaces are supported by the LPC2131FBD64,151?

The LPC2131FBD64,151 supports JTAG (TRST, TDI, TDO, TCK, TMS) and EmbeddedICE RT with trace capabilities (TRACEPKT0–3, TRACESYNC, TRACECLK, PIPESTAT0–2). These interfaces enable real-time debugging, instruction tracing, and non-intrusive firmware analysis using standard ARM debug tools - critical for validating timing-critical code and diagnosing race conditions in LPC2131FBD64,151-based systems.