IA8044/IA8344
SDLC COMMUNICATIONS CONTROLLER
Preliminary Data Sheet
As of Production Version 00
External Data Memory Characteristics
Variable Clock 1/TCLCL =
12 MHz Osc
Min Max
3.5 MHz TO 12 MHz
Symbol
TRLRH
Parameter
RDn Pulse Width
Unit
Min
Max
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
TWLWH
TLLAX
TRLDV
TRHDX
TRHDZ
TLLDV
TAVDV
TLLWL
TAVWL
TQVWX
TQVWH
TWHQX
TRLAZ
TWHLH
WRn Pulse Width
Address Hold After ALE
RDn Low to Valid Data In.
Data Hold After RDn
Data Float After RDn
ALE Low to Valid Data In
Address to Valid Data In.
ALE Low to RDn or WRn Low
Address to RDn or WRn Low
Data Valid to WRn Transistion
Data Setup Before WRn High
Data Held After WRn
ns
ns
ns
RDn Low to Address Float
RDn or WRn High to ALE High
Serial Interface Characteristics
Symbol
Parameter
Min
Max
Unit
TDCY Data Clock
TDCL Data Clock Low
TDCH Data Clock High
ns
ns
ns
ns
ns
ns
tTD
tDSS
tDHS
Transmit Data Delay
Data Setup Time
Data Hold Time
Copyright
innovASIC
2001
ENG210010112-00
www.innovasic.com
Customer Support:
1-888-824-4184
The End of Obsolescence
Page 27 of 32
INNOVASIC [ INNOVASIC, INC ]
