CS61884
62 DS485F3
19.11 Switching Characteristics - Parallel Port (Multiplexed Mode)
* All paramters guaranteed by production, characterization or design.
Parameter Ref. # Min. Typ. Max Unit
Pulse Width AS
or ALE High 1 25 - - ns
Muxed Address Setup Time to AS
or ALE Low 2 10 - - ns
Muxed Address Hold Time 3 5 - - ns
Delay Time AS
or ALE to WR, RD or DS 45--ns
CS
& R/W Setup Time Before WR, RD or DS Low 5 0 - - ns
CS
& R/W Hold Time 6 0 - - ns
Pulse Width, WR
, RD, or DS 770- -ns
Write Data Setup Time 8 30 - - ns
Write Data Hold Time 9 30 - - ns
Output Data Delay Time from RD
or DS Low 10 - - 100 ns
Read Data Hold Time 11 5 - - ns
Delay Time WR
, RD, or DS to ALE or AS Rise 12 30 - - ns
WR
or RD Low to RDY Low 13 - - 55 ns
WR
or RD Low to RDY High 14 - - 100 ns
WR
or RD High to RDY HIGH-Z 15 - - 40 ns
DS
Low to ACK High 16 - - 65 ns
DS
Low to ACK Low 17 - - 100 ns
DS
High to ACK HIGH-Z 18 - - 40 ns
