APEX 20K Programmable Logic Device Family Data Sheet
Table 52. EP20K400 External Bidirectional Timing Parameters
Symbol -1 Speed Grade -2 Speed Grade
-3 Speed Grade
Unit
Min
Max
Min
Max
Min
Max
t
t
t
t
t
t
t
t
t
t
(1)
1.4
0.0
2.0
1.8
0.0
2.0
2.0
0.0
2.0
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
INSUBIDIR
(1)
INHBIDIR
OUTCOBIDIR
(1)
4.9
7.3
7.3
6.1
8.9
8.9
7.0
10.3
10.3
(1)
(1)
XZBIDIR
ZXBIDIR
(2)
0.5
0.0
0.5
1.0
0.0
0.5
–
–
–
INSUBIDIR
(2)
INHBIDIR
(2)
3.1
6.2
6.2
4.1
7.6
7.6
–
–
–
OUTCOBIDIR
(2)
(2)
XZBIDIR
ZXBIDIR
Notes to tables:
(1) This parameter is measured without using ClockLock or ClockBoost circuits.
(2) This parameter is measured using ClockLock or ClockBoost circuits.
Tables 53 through 58 describe fMAX LE Timing Microparameters, fMAX
ESB Timing Microparameters, fMAX Routing Delays, Minimum Pulse
Width Timing Parameters, External Timing Parameters, and External
Bidirectional Timing Parameters for EP20K30E APEX 20KE devices.
Table 53. EP20K30E Fmax LE Timing Microparameters
Symbol -1 -2
-3
Unit
Min
Max
Min
Max
Min
Max
t
t
t
t
0.01
0.11
0.02
0.16
0.02
0.23
ns
ns
ns
ns
SU
H
0.32
0.85
0.45
1.20
0.67
1.77
CO
LUT
Altera Corporation
85
ETC [ ETC ]
