IGLOOe Low Power Flash FPGAs
Revision 13
2-65
Timing Characteristics
1.5 V DC Core Voltage
1.2 V DC Core Voltage
Table 2-117 Minimum and Maximum DC Input and Output Levels
DC Parameter
Description
Min.
Max.
Min.
Max.
Min.
Max.
Units
VCCI
Supply Voltage
3.0
3.3
3.6
V
VOL
Output Low Voltage
0.96
1.27
1.06
1.43
1.30
1.57
V
VOH
Output High Voltage
1.8
2.11
1.92
2.28
2.13
2.41
V
VIL, VIH
Input Low, Input High Voltages
0
3.6
0
3.6
0
3.6
V
VODIFF
Differential Output Voltage
0.625
0.97
0.625
0.97
0.625
0.97
V
VOCM
Output Common Mode Voltage
1.762
1.98
1.762
1.98
1.762
1.98
V
VICM
Input Common Mode Voltage
1.01
2.57
1.01
2.57
1.01
2.57
V
VIDIFF
Input Differential Voltage
300
mV
Table 2-118 AC Waveforms, Measuring Points, and Capacitive Loads
Input LOW (V)
Input HIGH (V)
Measuring Point* (V)
VREF (typ.) (V)
1.64
1.94
Cross point
–
Table 2-119 LVPECL – Applies to 1.5 V DC Core Voltage
Commercial-Case Conditions: TJ = 70°C, Worst-Case VCC = 1.425 V, Worst-Case VCCI = 3.0 V
Speed Grade
tDOUT
tDP
tDIN
tPY
Units
Std.
0.98
1.75
0.19
1.45
ns
Note: For specific junction temperature and voltage supply levels, refer to Table 2-6 on page 2-6 for derating values. Table 2-120 LVPECL – Applies to 1.2 V DC Core Voltage
Commercial-Case Conditions: TJ = 70°C, Worst-Case VCC = 1.14 V, Worst-Case VCCI = 3.0 V
Speed Grade
tDOUT
tDP
tDIN
tPY
Units
Std.
1.55
2.16
0.26
1.70
ns
Note: For specific junction temperature and voltage supply levels, refer to Table 2-7 on page 2-6 for derating values.