P89LPC906 데이터 시트보기 (PDF) - Philips Electronics

부품명

상세내역

제조사

P89LPC906

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

Philips Electronics 

Philips Semiconductors

P89LPC906/907/908

8-bit microcontrollers with two-clock 80C51 core

Table 3: P89LPC906 pin description…continued

Symbol

Pin

Type Description

P3.0 to P3.1

I/O

Port 3: Port 3 is an I/O port with a user-configurable output types. During reset Port 3

latches are configured in the input only mode with the internal pull-up disabled. The

operation of port 3 pins as inputs and outputs depends upon the port configuration

selected. Each port pin is configured independently. Refer to Section 8.11.1 “Port

configurations” and Table 13 “DC electrical characteristics” for details.

All pins have Schmitt triggered inputs.

Port 3 also provides various special functions as described below:

5

I/O

P3.0 — Port 3 bit 0.

O

XTAL2 — Output from the oscillator amplifier (when a crystal oscillator option is

selected via the FLASH configuration).

O

CLKOUT — CPU clock divided by 2 when enabled via SFR bit (ENCLK to TRIM.6). It

can be used if the CPU clock is the internal RC oscillator, Watchdog oscillator or

external clock input, except when XTAL1/XTAL2 are used to generate clock source

for the real time clock/system timer.

4

I/O

P3.1 — Port 3 bit 1.

I

XTAL1 — Input to the oscillator circuit and internal clock generator circuits (when

selected via the FLASH configuration). It can be a port pin if internal RC oscillator or

Watchdog oscillator is used as the CPU clock source, and if XTAL1/XTAL2 are not

used to generate the clock for the real time clock/system timer.

VSS

2

I

Ground: 0 V reference.

VDD

6

I

Power Supply: This is the power supply voltage for normal operation as well as Idle

and Power-down modes.

Table 4: P89LPC907 pin description

Symbol

Pin

Type Description

P0.4 to P0.6

I/O

Port 0: Port 0 is an I/O port with a user-configurable output type. During reset Port 0

latches are configured in the input only mode with the internal pull-up disabled. The

operation of Port 0 pins as inputs and outputs depends upon the port configuration

selected. Each port pin is configured independently. Refer to Section 8.11.1 “Port

configurations” and Table 13 “DC electrical characteristics” for details.

The Keypad Interrupt feature operates with Port 0 pins.

All pins have Schmitt triggered inputs.

Port 0 also provides various special functions as described below:

8

I/O

P0.4 — Port 0 bit 4.

I

CIN1A — Comparator positive input.

I

KBI4 — Keyboard input 4.

7

I/O

P0.5 — Port 0 bit 5.

I

CMPREF — Comparator reference (negative) input.

I

KBI5 — Keyboard input 5.

3

I/O

P0.6 — Port 0 bit 6.

O

CMP1 — Comparator 1 output.

I

KBI6 — Keyboard input 6.

9397 750 14467

Product data

Rev. 05 — 17 December 2004

© Koninklijke Philips Electronics N.V. 2004. All rights reserved.

9 of 51

Share Link: