NXP Semiconductors P89LPC9107FN,112

Overview

P89LPC9107FN,112 from NXP Semiconductors is an 8-bit microcontroller based on a two-clock accelerated 80C51 core, delivering instruction execution in 2–4 clocks. It integrates 1 kB byte-erasable flash, 128-byte RAM, dual 16-bit timers, a 23-bit system timer/RTC, four-channel 8-bit ADC, DAC output, analog comparator, and enhanced UART with fractional baud rate generation. It targets compact embedded control applications requiring low power, mixed-signal capability, and minimal external components.

For engineers reviewing the P89LPC9107FN,112 datasheet, P89LPC9107FN,112 pinout, P89LPC9107FN,112 application, or P89LPC9107FN,112 equivalent, key selection considerations include its DIP14 package compatibility, 2.4–3.6 V operation with 5 V tolerant I/Os, internal RC oscillator calibrated to ±1 %, and support for keypad interrupt, port pattern matching, and In-Application Programming (IAP-Lite).

Technical Context

The P89LPC9107FN,112 implements an accelerated 80C51 CPU architecture executing instructions in two to four clock cycles-up to six times faster than standard 80C51 devices at the same frequency. Its internal 7.3728 MHz RC oscillator (with clock doubling) enables 136–272 ns instruction cycle times, reducing EMI and power consumption versus higher-frequency alternatives.

It features a unified peripheral set including UART with break detection and automatic address recognition, programmable slew-rate-controlled I/Os, four priority-level interrupts, two keypad interrupt inputs, and configurable port modes (quasi-bidirectional, open-drain, push-pull, input-only). The 23-bit system timer supports RTC functionality and can generate precise timing events independent of CPU load.

Key Specifications

Pinout & Package

Package: DIP14 (plastic dual in-line package; 14 leads; 300 mil width; SOT27-1).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 8-bit microcontroller applications.

Compared with P89LPC9107FDH and P89LPC9103FTK, the P89LPC9107FN,112 uniquely combines DIP14 mechanical compatibility, full analog peripheral set (DAC, comparator, 4-channel ADC), and dual timer/PWM capability - making it the only option for through-hole designs requiring integrated mixed-signal control without external support components.

Availability

P89LPC9107FN,112 is available at Aetrix Electronics and suitable for industrial sensor nodes, smart thermostat controllers, embedded power monitors, and low-cost PLC I/O modules requiring stable component supply, long-term manufacturability, and through-hole assembly compatibility.

Supply support for P89LPC9107FN,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 headquartered in Eindhoven, Netherlands, specializing in secure connectivity solutions for automotive, industrial, and IoT applications.

The P89LPC9107FN,112 belongs to NXP's LPC900 family of 8-bit microcontrollers, designed specifically for cost-sensitive, space-constrained embedded control applications requiring integrated analog peripherals, low power, and minimal external components.

FAQ

What is the maximum operating frequency of the P89LPC9107FN,112 when using the internal RC oscillator?

The P89LPC9107FN,112 operates with an internal RC oscillator factory-calibrated to 7.3728 MHz. With clock doubling enabled, it achieves an effective CPU clock of 14.7456 MHz, yielding instruction cycle times of 136–272 ns. This frequency is sufficient for real-time control tasks while maintaining low power and EMI - no external crystal is needed for basic operation of the P89LPC9107FN,112.

Does the P89LPC9107FN,112 support In-Application Programming (IAP)?

Yes, the P89LPC9107FN,112 supports In-Application Programming (IAP-Lite), allowing firmware updates and non-volatile data storage directly in flash memory during normal operation. This capability enables field upgrades and runtime parameter logging without requiring external programming hardware - a core feature confirmed in the official NXP product data sheet for the P89LPC9107FN,112.

How many I/O pins are available on the P89LPC9107FN,112 in its default configuration?

The P89LPC9107FN,112 provides up to 10 I/O pins when using internal oscillator and reset options. These include P0.1–P0.5, P0.7, P1.0–P1.2, and P1.5 (RST, configured as input-only). All pins support configurable output modes and Schmitt-triggered inputs - a confirmed specification for the P89LPC9107FN,112 in its DIP14 package.

Can the P89LPC9107FN,112 operate from a 5 V supply?

No, the P89LPC9107FN,112 has a specified VDD operating range of 2.4 V to 3.6 V. However, its I/O pins are 5 V tolerant - they may be pulled up to or driven by 5.5 V logic signals without damage. This allows safe interfacing with legacy 5 V systems while powering the P89LPC9107FN,112 from a regulated 3.3 V supply.

What analog functions are integrated into the P89LPC9107FN,112?

The P89LPC9107FN,112 integrates a four-channel 8-bit ADC (AD10–AD13), a single DAC output (DAC1), and an analog comparator with selectable reference (CMPREF) and dual inputs (CIN1A/CIN1B). These functions are fully documented in the NXP datasheet and are accessible via dedicated pins on the P89LPC9107FN,112 DIP14 package - enabling complete analog signal acquisition and generation without external converters.