Lattice Semiconductor
ispMACH 4000V/B/C Family Data Sheet
21
ispMACH 4000V/B/C Internal Timing Parameters
Over Recommended Operating Conditions
Parameter
In/Out Delays
t
IN
t
GOE
t
GCLK_IN
t
BUF
t
EN
t
DIS
Routing/GLB Delays
t
ROUTE
t
MCELL
t
INREG
t
FBK
t
PDb
t
PDi
Register/Latch Delays
t
S
t
S_PT
Description
-25
-27
-3
-35
Units
Min.
Max.
Min.
Max.
Min.
Max.
Min.
Max.
Input Buffer Delay
Global OE Pin Delay
Global Clock Input Buffer Delay
Delay through Output Buffer
Output Enable Time
Output Disable Time
—
—
—
—
—
—
0.60
2.04
0.78
0.85
0.96
0.96
—
—
—
—
—
—
0.60
2.54
1.28
0.85
0.96
0.96
—
—
—
—
—
—
0.70
3.04
1.28
0.85
0.96
0.96
—
—
—
—
—
—
0.70
3.54
1.28
0.85
0.96
0.96
ns
ns
ns
ns
ns
ns
Delay through GRP
Macrocell Delay
Input Buffer to Macrocell Register Delay
Internal Feedback Delay
5-PT Bypass Propagation Delay
Macrocell Propagation Delay
—
—
—
—
—
—
0.61
0.45
0.11
0.00
0.44
0.64
—
—
—
—
—
—
0.81
0.55
0.31
0.00
0.44
0.64
—
—
—
—
—
—
1.01
0.55
0.31
0.00
0.44
0.64
—
—
—
—
—
—
1.01
0.65
0.31
0.00
0.94
0.94
ns
ns
ns
ns
ns
ns
D-Register Setup Time (Global Clock)
D-Register Setup Time (Product Term
Clock)
T-Register Setup Time (Global Clock)
T-Register Setup Time (Product Term
Clock)
D-Register Hold Time
T-Register Hold Time
D-Input Register Setup Time (Global
Clock)
D-Input Register Setup Time (Product
Term Clock)
D-Input Register Hold Time (Global
Clock)
D-Input Register Hold Time (Product
Term Clock)
Register Clock to Output/Feedback
MUX Time
Clock Enable Setup Time
Clock Enable Hold Time
Latch Setup Time (Global Clock)
Latch Setup Time (Product Term Clock)
Latch Hold Time
Latch Gate to Output/Feedback MUX
Time
Propagation Delay through Transparent
Latch to Output/Feedback MUX
Asynchronous Reset or Set to Output/
Feedback MUX Delay
0.92
1.42
—
—
1.12
1.32
—
—
1.02
1.32
—
—
0.92
1.32
—
—
ns
ns
t
ST
t
ST_PT
1.12
1.42
—
—
1.32
1.32
—
—
1.22
1.32
—
—
1.12
1.32
—
—
ns
ns
t
H
t
HT
t
SIR
0.88
0.88
0.82
—
—
—
0.68
0.68
1.37
—
—
—
0.98
0.98
1.27
—
—
—
1.08
1.08
1.27
—
—
—
ns
ns
ns
t
SIR_PT
1.45
—
1.45
—
1.45
—
1.45
—
ns
t
HIR
0.88
—
0.63
—
0.73
—
0.73
—
ns
t
HIR_PT
0.88
—
0.63
—
0.73
—
0.73
—
ns
t
COi
—
0.52
—
0.52
—
0.52
—
0.52
ns
t
CES
t
CEH
t
SL
t
SL_PT
t
HL
t
GOi
2.25
1.88
0.92
1.42
1.17
—
—
—
—
—
—
0.33
2.25
1.88
1.12
1.32
1.17
—
—
—
—
—
—
0.33
2.25
1.88
1.02
1.32
1.17
—
—
—
—
—
—
0.33
2.25
1.88
0.92
1.32
1.17
—
—
—
—
—
—
0.33
ns
ns
ns
ns
ns
ns
t
PDLi
—
0.25
—
0.25
—
0.25
—
0.25
ns
t
SRi
—
0.28
—
0.28
—
0.28
—
0.28
ns