TABLE OF CONTENTS
FEATURES ....................................................................................................................................... 1
GENERAL DESCRIPTION ................................................................................................................ 1
PIN CONFIGURATION ...................................................................................................................... 3
PIN DESCRIPTION ........................................................................................................................... 4
BLOCK DIAGRAM ............................................................................................................................ 5
AC TIMING........................................................................................................................................ 6
TIMING WAVEFORMS ...................................................................................................................... 7
WRITE CYCLE TIMING ........................................................................................................................ 7
READ CYCLE TIMING.......................................................................................................................... 7
SEND DATA TO K/B ........................................................................................................................... 8
RECEIVE DATA FROM K/B................................................................................................................... 8
XIN/XOUT CLOCK ........................................................................................................................... 8
ABSOLUTE MAXIMUM RATINGS..................................................................................................... 9
ELECTRICAL CHARACTERISTICS & CAPACITANCE ..................................................................... 9
STATUS REGISTER ....................................................................................................................... 10
OUTPUT BUFFER........................................................................................................................... 10
INPUT BUFFER .............................................................................................................................. 10
I/O PORTS ...................................................................................................................................... 10
COMMANDS (I/O ADDRESS HEX 64)............................................................................................. 12
APPLICATION CIRCUIT ................................................................................................................. 13
ASYNCHRONOUS ............................................................................................................................. 13
SYNCHRONOUS............................................................................................................................... 14
PACKAGE DIMENSIONS................................................................................................................ 15
80 Arkay Drive
Hauppauge, NY 11788
(516) 435-6000
FAX (516) 273-3123
2