Datasheet > PC87303

PC87303

更新时间： 2024-11-07 22:44:31

品牌	Logo	应用领域
美国国家半导体 - NSC		控制器 PC 时钟
页数	文件大小	规格书
114页	1122K
描述
PC87303VUL SuperI/OTM Sidewinder Lite Floppy Disk Controller, Keyboard Controller, Real-Time Clock, Dual UARTs, IEEE 1284 Parallel Port, and IDE Inter

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PC87303 数据手册

PRELIMINARY

February 1995

PC87303VUL SuperI/O^TMSidewinder Lite

Floppy Disk Controller, Keyboard Controller,

Real-Time Clock, Dual UARTs, IEEE 1284 Parallel Port,

and IDE Interface

General Description

The PC87303VUL is a single chip solution incorporating a

Keyboard and PS/2 Mouse Controller (KBC), Real Time

Clock (RTC) and most commonly used I/O peripherals in

Features

The Floppy Disk Controller:

Ð Software compatible with the DP8477, the 765A and

the N82077

Ð 16-byte FIFO (disabled by default)

Ð Burst and Non-Burst modes

ISA, EISA and MicroChannel based computers. In addition

to the KBC and RTC, a Floppy Disk Controller (FDC), two

full featured UARTs, an IEEE 1284 compatible parallel port

and all the necessary control logic for an IDE interface pro-

vides support for most commonly used I/O peripherals.

Ð Perpendicular Recording drive support

Ð High performance internal analog data separator

(no external filter components required)

Ð Low power CMOS with power-down mode

Ð Automatic media-sense support with full IBM TDR

(Tape Drive Register) implementation for PC-AT and

PS/2 floppy drive types

Standard PC-AT address decoding for all the peripherals,

a set of configuration registers, and two user selectable chip

selects are also implemented in this highly integrated mem-

ber of the SuperI/O family. The advanced features and high

integration of the PC87303 result in several benefits for low

cost, high performance systems. Printed circuit board space

savings, fewer components on the motherboard and com-

patibility with the latest industry standard peripherals are

only a few of the benefits of using a PC87303.

The Keyboard Controller:

Ð 8042AH and PC87911 software compatible

Ð 8-bit Microcomputer with 2 kbytes custom ROM and

256 bytes data RAM

Ð Asynchronous access to two data registers and one

status register during normal operation

Ð Dedicated open drain outputs for keyboard controller

application

Ð Supports both interrupt and polling

Ð Supports DMA handshake

Ð 18 programmable I/O pins

Ð 4 dedicated open-drain outputs

Ð 8-bit Timer/Counter

Ð Binary and BCD arithmetic

The KBC is fully software compatible with the 8042AH mi-

crocontroller. It contains system timing, control logic, cus-

tom ROM program memory, RAM data memory and 18 pro-

grammable I/O lines necessary to implement dedicated

control functions. It is an efficient controller which uses pre-

dominantly singlebyteinstructionswithsupportforbinaryand

BCD arithmetic and extensive bit handling capabilities.

(Continued)

Ð Expandable I/O

(Continued)

Block Diagram

TL/C/12074–1

TRI-STATEÉ is a registered trademark of National Semiconductor Corporation.

SuperI/O^TMis a trademark of National Semiconductor Corporation.

MicroChannelÉ, PC-ATÉ and PS/2É are registered trademarks of International Business Machines Corporation.

1995 National Semiconductor Corporation

TL/C/12074

RRD-B30M75/Printed in U. S. A.

12 3 4 5 6 7...114

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与PC87303相关器件

型号	品牌	获取价格	描述	数据表
PC87303-IAT/VUL	TI	获取价格	MULTIFUNCTION PERIPHERAL, PQFP16, PLASTIC, QFP-160
PC87303VUL	NSC	获取价格	PC87303VUL SuperI/OTM Sidewinder Lite Floppy Disk Controller, Keyboard Controller, Real-Ti
PC87306	NSC	获取价格	PC87306 SuperI/OTM Enhanced Sidewinder Lite Floppy Disk Controller, Keyboard Controller, R
PC87306-IBG/VUL	TI	获取价格	MULTIFUNCTION PERIPHERAL, PQFP16, PLASTIC, QFP-160
PC87306-ICI/VUL	TI	获取价格	MULTIFUNCTION PERIPHERAL, PQFP16, PLASTIC, QFP-160
PC87306VUL	NSC	获取价格	PC87306 SuperI/OTM Enhanced Sidewinder Lite Floppy Disk Controller, Keyboard Controller, R
PC87307	NSC	获取价格	PC87307/PC97307 Plug and Play Compatible and PC97 Compliant SuperI/O
PC87307-IBW/VUL	TI	获取价格	MULTIFUNCTION PERIPHERAL, PQFP16, EIAJ, PLASTIC, QFP-160
PC87307VUL	NSC	获取价格	PC87307/PC97307 Plug and Play Compatible and PC97 Compliant SuperI/O
PC87308	ETC	获取价格

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