NXP Semiconductors P87LPC760BDH,112

Overview

P87LPC760BDH,112 from NXP Semiconductors (formerly Philips) is a 14-pin, low-power, OTP-based 80C51-compatible microcontroller targeting cost-sensitive embedded control applications. It integrates 1 kbyte EPROM, 128 byte RAM, one analog comparator, full-duplex UART, I²C interface, two 16-bit timers, and programmable port configurations - all operating from 2.7 V to 6.0 V. Used in battery-powered sensors and simple industrial controllers where minimal pin count and self-contained reset/oscillator are critical.

For engineers reviewing the P87LPC760BDH,112 datasheet, P87LPC760BDH,112 pinout, P87LPC760BDH,112 application, or P87LPC760BDH,112 equivalent, key selection criteria include its 20 MHz max clock at 5 V, on-chip RC oscillator option eliminating external crystals, configurable slew-rate outputs for EMI reduction, and dual power-down/idle modes achieving ~1 µA typical current.

Technical Context

The P87LPC760BDH,112 implements an accelerated 80C51 core executing instructions in 6 or 12 oscillator cycles - delivering twice the throughput of standard 80C51 at same frequency. Its CPU clock is derived from user-selectable sources: external crystal/resonator (X1/X2), internal RC oscillator, or external clock input - with optional CLKR/DIVM scaling.

Peripherals are tightly integrated via dedicated SFRs: I²C control (I2CON, I2CFG), comparator configuration (CMP1), watchdog timing (WDCON), and port mode registers (P0M1/P0M2, P1M1/P1M2). All I/O pins support LED drive (20 mA), Schmitt-trigger inputs, and configurable output types - quasi-bidirectional, open-drain, push-pull, or input-only - enabling direct interface with switches, LEDs, and I²C buses without external components.

Key Specifications

Pinout & Package

Package: 14-pin TSSOP (SOT402-1), 4.4 mm body width, lead pitch 0.65 mm - suitable for compact PCB layouts and automated assembly.

Key Features

Applications

Equivalent & Alternatives

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

Compared with AT89LP2052-20PU and STM8S003F3P6, the P87LPC760BDH,112 delivers optimal integration for 14-pin constrained designs - combining OTP code storage, analog comparator, I²C, and ultra-low-power modes in a single small-outline package without sacrificing 8051 toolchain compatibility.

Availability

P87LPC760BDH,112 is available at Aetrix Electronics and suitable for smart sensor nodes, industrial keypad controllers, motor monitors, and embedded power supervisors requiring stable component supply across long-lifecycle industrial programs.

Supply support for P87LPC760BDH,112 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 formed from the spin-off of Philips Semiconductors in 2006, specializing in secure connectivity solutions for automotive, industrial, and IoT markets.

The P87LPC760BDH,112 belongs to NXP's legacy LPC700 family - designed specifically for ultra-low-pin-count, cost-optimized embedded control where integration of oscillator, reset, comparator, and communication interfaces reduces external component count.

FAQ

What is the maximum operating frequency of the P87LPC760BDH,112 and under what voltage conditions?

The P87LPC760BDH,112 operates up to 20 MHz when VDD is between 4.5 V and 6.0 V, and up to 10 MHz when VDD is between 2.7 V and 6.0 V. This dual-speed specification allows flexible deployment across both 3 V battery-powered and 5 V industrial systems while maintaining deterministic timing for UART baud generation and timer-based measurements - critical for reliable P87LPC760BDH,112 system operation.

Does the P87LPC760BDH,112 support in-circuit programming, and what memory type is used?

Yes, the P87LPC760BDH,112 supports serial EPROM programming via its on-chip interface, enabling in-circuit production coding without socketing. It uses 1 kbyte of one-time-programmable (OTP) EPROM for program storage - offering non-volatility and security via two EPROM security bits that prevent unauthorized readout of application code, ensuring intellectual property protection in deployed P87LPC760BDH,112 units.

How does the analog comparator in the P87LPC760BDH,112 function, and what pins are involved?

The P87LPC760BDH,112 features one analog comparator with dedicated pins: P0.3 (CIN1B), P0.4 (CIN1A), P0.5 (CMPREF), and P0.6 (CMP1). It compares voltages at CIN1A and CIN1B against CMPREF, generating a digital output on CMP1. Digital I/O paths for these pins must be disabled via PT0AD register to prevent noise injection - a design requirement explicitly defined in the P87LPC760BDH,112 functional description for accurate analog operation.

Can the P87LPC760BDH,112 operate without an external crystal, and how is the oscillator configured?

Yes, the P87LPC760BDH,112 can operate without an external crystal using its configurable on-chip RC oscillator - selected via user-programmed EPROM bits. When enabled, this oscillator eliminates external timing components, reducing BOM cost and board area. Configuration is permanent after programming, and the P87LPC760BDH,112 supports additional options including external clock input, crystal/resonator (X1/X2), and medium/high-frequency crystal modes - all selectable at production time.

What power-saving modes does the P87LPC760BDH,112 offer, and how is wake-up handled?

The P87LPC760BDH,112 provides Idle mode (CPU halted, peripherals active) and Power Down mode (typical current ~1 µA). Wake-up from Power Down is triggered by any enabled low-level interrupt input - such as INT0, KBI, or comparator interrupt - allowing immediate resumption of execution without external reset circuitry. This behavior is guaranteed in the P87LPC760BDH,112 datasheet and enables responsive, energy-efficient operation in event-driven applications.