Owner manual

20
ATF1508AS(L)
0784O–PLD–09/02
Notes: 1. See ordering information for valid part numbers.
2. The t
RPA
parameter must be added to the t
LAD
,t
LAC
,t
TIC
,t
ACL
,andt
SEXP
parameters for macrocells running in the reduced-
power mode.
t
OD2
Output Buffer and Pad Delay
(Slow slew rate = OFF;
V
CCIO
=3.3V;C
L
=35pF)
2.52.0567ns
t
OD3
Output Buffer and Pad Delay
(Slow slew rate = ON;
V
CCIO
=5Vor3.3V;C
L
=35pF)
55.5 8 1012ns
t
ZX1
Output Buffer Enable Delay
(Slow slew rate = OFF;
V
CCIO
=5.0V;C
L
=35pF)
4.0 5.0 7 9 10 ns
t
ZX2
Output Buffer Enable Delay
(Slow slew rate = OFF;
V
CCIO
=3.3V;C
L
=35pF)
4.5 5.5 7 9 10 ns
t
ZX3
Output Buffer Enable Delay
(Slow slew rate = ON;
V
CCIO
= 5.0V/3.3V; C
L
=35pF)
9 9 10 11 12 ns
t
XZ
Output Buffer Disable Delay
(C
L
=5pF)
45678ns
t
SU
Register Setup Time 3 2 4 5 6 ns
t
H
Register Hold Time 2 3 4 5 6 ns
t
FSU
Register Setup Time of Fast
Input
33223ns
t
FH
Register Hold Time of Fast
Input
0.5 0.5 2 2 2.5 ns
t
RD
RegisterDelay 12122ns
t
COMB
CombinatorialDelay 12122ns
t
IC
ArrayClockDelay 35678ns
t
EN
RegisterEnableTime 35678ns
t
GLOB
GlobalControlDelay 11111ns
t
PRE
RegisterPresetTime 23456ns
t
CLR
RegisterClearTime 23456ns
t
UIM
SwitchMatrixDelay 11222ns
t
RPA
Reduced-power Adder
(2)
10 11 13 14 15 ns
AC Characteristics (Continued)
(1)
Symbol Parameter
-7 -10 -15 -20 -25
UnitsMin Max Min Max Min Max Min Max Min Max