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EP2SGX60CF780C4N Datasheet, PDF (213/316 Pages) Altera Corporation – Support for numerous single-ended and differential I/O standards | |||
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DC and Switching Characteristics
Table 4â23. Stratix II GX Device DC Operating Conditions (Part 2 of 2) Note (1)
Symbol
Parameter
Conditions
RCONF
(4)
Value of I/O pin pull-up
resistor before and
during configuration
Vi = 0, VCCIO =
3.3 V
Vi = 0, VCCIO =
2.5 V
Vi = 0, VCCIO =
1.8 V
Vi = 0, VCCIO =
1.5 V
Vi = 0, VCCIO =
1.2 V
Recommended value of
I/O pin external
pull-down resistor
before and during
configuration
Device
Minimum Typical Maximum Unit
10
25
50
KOhm
15
35
70
KOhm
30
50
100 KOhm
40
75
150 KOhm
50
90
170 KOhm
1
2
KOhm
Notes to Table 4â23:
(1) Typical values are for TA = 25 °C, VCCINT = 1.2 V, and VCCIO = 1.5 V, 1.8 V, 2.5 V, and 3.3 V.
(2) This value is specified for normal device operation. The value may vary during power-up. This applies for all VCCIO
settings (3.3, 2.5, 1.8, and 1.5 V).
(3) Maximum values depend on the actual TJ and design utilization. See PowerPlay Early Power Estimator (EPE) and
Power Analyzer or the Quartus II PowerPlay Power Analyzer and Optimization Technology (available at www.altera.com)
for maximum values. See the section âPower Consumptionâ on page 4â59 for more information.
(4) Pin pull-up resistance values will lower if an external source drives the pin higher than VCCIO.
I/O Standard Specifications
Tables 4â24 through 4â47 show the Stratix II GX device family I/O
standard specifications.
Table 4â24. LVTTL Specifications (Part 1 of 2)
Symbol
VCCIO (1)
VIH
VIL
VOH
Parameter
Output supply voltage
High-level input voltage
Low-level input voltage
High-level output voltage
Conditions
IOH = â4 mA (2)
Minimum
3.135
1.7
â0.3
2.4
Maximum Unit
3.465
V
4.0
V
0.8
V
V
Altera Corporation
June 2009
4â43
Stratix II GX Device Handbook, Volume 1
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