IA80C152 Datasheet, PDF (24/32 Pages) InnovASIC, Inc – UNIVERSAL COMMUNICATIONS CONTROLLER

Page 24 of 32
IA80C152
Preliminary Data Sheet
UNIVERSAL COMMUNICATIONS CONTROLLER
Figure 6: External Program Memory Read Cycle
ALE
PSENn/EPSENn
TLHLL
TAVLL
TLLPL
TLLIV
TPLIV
TPLPH
PORT0/PORT5
TPLAZ
TLLAX
A0-A7
INSTR IN
TPXIZ
TPXIX
A0-A7
PORT2/PORT6
TAVIV
A8-A15
A8-A15
Figure 7: External Data Memory Read Cycle
ALE
PSENn
RDn
PORT0
PORT2
TLLDV
TWHLH
TLLWL
TRLRH
TLLAX
TRLAZ
TAVLL
TRLDV
A0-A7 FROM R OR DPL
DATA IN
TAVWL
TAVDV
P2.0-P2.7 OR A8-A15 FROM DPH
TRHDZ
TRHDX
A0-A7 FROM PCL
INSTR. IN
A8-A15 FROM PCH
Copyright © 2000
innovASIC
[_________The End of Obsolescence™