Philips SemiconductorsUser’s Manual - Preliminary -

GENERAL DESCRIPTION

P89LPC901/902/903

 

Block Diagram - P89LPC902

 

High Performance

Accelerated 2-clock

80C51 CPU

1KB Code

 

 

 

 

 

 

 

Flash

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Internal Bus

 

 

 

128 byte

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Data RAM

 

 

 

 

 

 

 

Port 1

Input

 

Timer0

Port 0

Timer1

Configurable I/Os

 

Real-Time Clock/

System Timer

Keypad

Interrupt

Analog

Comparators

Watchdog Timer

and Oscillator

Programmable

 

CPU

Oscillator Divider

 

Clock

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

On-Chip

 

 

 

 

 

RC

 

 

 

Power Monitor

 

Oscillator

 

 

 

(Power-On Reset,

 

 

 

 

 

 

Brownout Reset)

 

 

 

 

 

 

 

2003 Dec 8

10

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Philips P89LPC903, P89LPC901 user manual High Performance Accelerated 2-clock 80C51 CPU, Block Diagram P89LPC902

P89LPC903, P89LPC902, P89LPC901 specifications

The Philips P89LPC901, P89LPC902, and P89LPC903 are a series of 8-bit microcontrollers designed for embedded system applications. These models, which belong to the LPC900 series, are notable for their affordability and versatility, making them an attractive choice for both hobbyists and professional developers.

One of the core features of the P89LPC901, P89LPC902, and P89LPC903 microcontrollers is their powerful 8-bit architecture. Operating at clock speeds up to 20 MHz, they deliver efficient performance suited for a range of tasks. Each model includes a comprehensive instruction set that supports various data manipulation and arithmetic functions, enabling extensive programming capabilities.

These microcontrollers come with built-in memory, with configurations that vary among the three models. The P89LPC901 typically features 4 KB of Flash memory and 256 bytes of RAM, while the P89LPC902 and P89LPC903 offer enhanced memory options. This Flash memory allows for reprogrammability, making it easier to update and modify applications as needed.

Another significant characteristic of the LPC900 series is their integrated peripherals. These models are equipped with a variety of I/O ports, allowing for easy interfacing with other devices and components. The P89LPC901 supports up to 32 I/O pins, while the P89LPC902 and P89LPC903 provide additional features such as analog-to-digital converters (ADCs), timers, and serial communication interfaces. This broad range of peripherals empowers developers to design complex applications without needing extra hardware.

Power consumption is also a key consideration for microcontroller applications. The P89LPC901, P89LPC902, and P89LPC903 are designed with low power consumption in mind, making them ideal for battery-operated devices and energy-efficient projects. They can operate in various power modes, allowing for greater flexibility in deployment.

In terms of technology, these microcontrollers utilize advanced CMOS technology, ensuring high reliability and durability. Their design offers a robust solution for numerous applications, including consumer electronics, industrial controls, and automation systems.

In summary, the Philips P89LPC901, P89LPC902, and P89LPC903 microcontrollers present an attractive combination of performance, integrated peripherals, low power consumption, and versatility. Their features cater to a wide array of applications, keeping them relevant in a rapidly evolving technology landscape. For hobbyists and professionals alike, these microcontrollers represent a reliable foundation for embedded system development.