P89LPC908 datasheet, PDF - EEWORLD Datasheet

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P89LPC908: Description8-bit microcontrollers with two-clock 80C51 core 1 kB 3 V Flash with 128-byte RAM; File Size185KB，51 Pages; ManufacturerPhilips Semiconductors (NXP Semiconductors N.V.); Websitehttps://www.nxp.com/

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P89LPC908 Overview

8-bit microcontrollers with two-clock 80C51 core 1 kB 3 V Flash with 128-byte RAM

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P89LPC906/907/908

8-bit microcontrollers with two-clock 80C51 core

1 kB 3 V Flash with 128-byte RAM

Rev. 05 — 17 December 2004

Product data

1. General description

The P89LPC906/907/908 are single-chip microcontrollers in low-cost 8-pin packages,

based on a high performance processor architecture that executes instructions in two

to four clocks, six times the rate of standard 80C51 devices. Many system-level

functions have been incorporated into the P89LPC906/907/908 in order to reduce

component count, board space, and system cost.

2. Features

2.1 Principal features

1 kB byte-erasable Flash code memory organized into 256-byte sectors and

16-byte pages. Single-byte erasing allows any byte(s) to be used as non-volatile

data storage.

128-byte RAM data memory.

Two 16-bit counter/timers. (Timer 0 may be conﬁgured to toggle a port output

upon timer overﬂow or to become a PWM output on the P89LPC907 device).

23-bit system timer that can also be used as a Real-Time clock.

A single analog comparator with selectable reference source.

Enhanced UART with fractional baudrate generator, break detect, framing error

detection, automatic address detection and versatile interrupt capabilities

(P89LPC908, transmit only on P89LPC907).

Internal RC oscillator option (factory calibrated to

±1

%) allows operation without

external oscillator components. The RC oscillator option is selectable and ﬁne

tunable.

2.4 V to 3.6 V V

operating range with 5 V tolerant I/O pins (may be pulled up or

driven to 5.5 V). Supply pins located at package centers for improved supply

decoupling and reduced EMI.

Up to six I/O pins when using internal oscillator and reset options.

8-pin SO-8 package.

2.2 Additional features

A high performance 80C51 CPU provides instruction cycle times of 111 ns to

222 ns for all instructions except multiply and divide when executing at 18 MHz

(P89LPC906) (167 ns to 333 ns at 12 MHz). This is six times the performance of

the standard 80C51 running at the same clock frequency. A lower clock frequency

for the same performance results in power savings and reduced EMI.

In-Application Programming (IAP-Lite) and byte erase allows code memory to be

used for non-volatile data storage.

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