DP8473N NSC [National Semiconductor], DP8473N Datasheet - Page 23

• Manufacturer Part Number: DP8473N
• Description: DP8473 Floppy Disk Controller PLUS-2
• Manufacturer: NSC [National Semiconductor]

AC Electrical Characteristics
MICROPROCESSOR READ TIMING
TRI-STATE Note This limit includes the RC delay inherent in our test method This signal will typically turn off within 15 ns enabling other devices to drive this
signal with no contention
MICROPROCESSOR WRITE TIMING
t
t
t
t
t
t
t
Symbol
t
t
t
t
t
t
t
Symbol
AW
WA
WW
ADW
DW
WD
WI
AR
RA
RR
RD
ADR
DR
RI
Address Valid to Leading Edge of Write Strobe
Address Hold from Write Strobe
Write Strobe Width
Address Valid to Trailing Edge of Write Strobe
Data Setup to End of Write Strobe or Chip Select
Data Hold from Write Strobe
Clear INT from Write Strobe
Address Valid prior to Read Strobe
Address Hold from Read Strobe
Read Strobe Width
Read Strobe and Chip Select to Data Valid
Address Valid to Read Data
Data Hold from Read Strobe to High Impedance
(TRI-STATE Note)
Clear INT from Read Strobe
Parameter
Parameter
23
Min
Min
10
75
10
25
35
20
12
0
5
0
Max
Max
75
85
60
65
65
TL F 9384 – 11
TL F 9384 – 12
Units
Units
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns