Operating Conditions
Bus Hold Specifications
Table 4–39 shows the Arria GX device family bus hold specifications.
Table 4–39. Bus Hold Parameters
VCCIO Level
1.8 V
Parameter Conditions
Unit
μA
1.2 V
1.5 V
2.5 V
3.3 V
Min Max Min Max Min Max Min
Max Min Max
Low
V
IN > VIL
22.5
25
30
50
70
sustaining
current
(maximum)
High
V
IN < VIH
–22.5
–25
–30
–50
–70
μA
sustaining
current
(minimum)
Low
overdrive
current
0 V < VIN
VCCIO
<
<
120
160
–160
1.0
200
–200
1.07
300
–300
1.7
500
μA
High
overdrive
current
0 V < VIN
VCCIO
–120
–500 μA
Bus-hold
trip point
0.45 0.95 0.5
0.68
0.7
0.8
2.0
V
On-Chip Termination Specifications
Tables 4–40 and 4–41 define the specification for internal termination
resistance tolerance when using series or differential on-chip termination.
Table 4–40. Series On-Chip Termination Specification for Top and Bottom I/O Banks (Part 1 of 2)
Resistance Tolerance
Symbol
Description
Conditions
Commercial
Max
Industrial
Max
Unit
25-Ω RS
3.3/2.5
Internal series termination without
calibration (25-Ω setting)
VCCIO = 3.3/2.5V
VCCIO = 3.3/2.5V
VCCIO = 1.8V
30
30
30
30
30
30
30
30
%
50-Ω RS
3.3/2.5
Internal series termination without
calibration (50-Ω setting)
%
%
%
25-Ω RS
1.8
Internal series termination without
calibration (25-Ω setting)
50-Ω RS
Internal series termination without
VCCIO = 1.8V
calibration (50-Ω setting)
1.8
4–32
Altera Corporation
May 2008
Arria GX Device Handbook, Volume 1
ALTERA [ ALTERA CORPORATION ]
