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B-1
APPENDIX B
SIGNAL DESCRIPTIONS
This appendix provides reference information for the pin functions of the 8XC196NP and
80C196NU.
B.1 FUNCTIONAL GROUPINGS OF SIGNALS
Table B-1 lists the signals for the 8XC196NP and 80C196NU, grouped by function. A diagram
of each package that is currently available shows the pin location of each signal.
NOTE
As new packages are supported, they will be added to the datasheets first. If
your package type is not shown in this appendix, refer to the latest datasheet to
find the pin locations.
Table B-1. 8XC196NP and 80C196NU Signals Arranged by Function
Address & Data Processor Control Input/Output Bus Control & Status
A19:0 EA# (NP only) EPORT3:0 ALE
AD15:0 EXTINT3:0 P1.3:0/EPA3:0 BHE#/WRH#
NMI P1.4/T1CLK BREQ#
Power & Ground ONCE P1.5/T1DIR CLKOUT
V
CC
PLLEN1 (NU only) P1.6/T2CLK CS5:0#
V
SS
PLLEN2 (NU only) P1.7/T2DIR HOLD#
RESET# P2.0/TXD HLDA#
RPD P2.1/RXD INST
XTAL1 P2.7:2 RD#
XTAL2 P3.7:0 READY
P4.2:0/PWM2:0 WR#/WRL#
P4.3