EP2S90F1020C5 Datasheet, PDF(442/768 Page) Altera Corporation – Stratix II Device Handbook, Volume 1

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EP2S90F1020C5 Datasheet, PDF (442/768 Pages) Altera Corporation – Stratix II Device Handbook, Volume 1

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Stratix II and Stratix II GX I/O Standards Support

general-purpose, single-ended standard used for 3.3-V applications. This

I/O standard does not require input reference voltages (VREF) or

termination voltages (VTT).

1

Stratix II and Stratix II GX devices support both input and

output levels for 3.3-V LVTTL operation.

Stratix II Stratix II GX devices support a VCCIO voltage level of 3.3 V ï± 5%

as specified as the narrow range for the voltage supply by the

EIA/JEDEC standard.

LVCMOS

The LVCMOS standard is formulated under EIA/JEDEC Standard,

JESD8-B (Revision of JESD8-A): Interface Standard for Nominal

3-V/3.3-V Supply Digital Integrated Circuits.

The standard defines DC interface parameters for digital circuits

operating from a 3.0- or 3.3-V power supply and driving or being driven

by LVCMOS-compatible devices. The 3.3-V LVCMOS I/O standard is a

general-purpose, single-ended standard used for 3.3-V applications.

While LVCMOS has its own output specification, it specifies the same

input voltage requirements as LVTTL. These I/O standards do not

require VREF or VTT.

1 Stratix II and Stratix II GX devices support both input and

output levels for 3.3-V LVCMOS operation.

Stratix II and Stratix II GX devices support a VCCIO voltage level of

3.3 V ï± 5% as specified as the narrow range for the voltage supply by the

EIA/JEDEC standard.

2.5 V

The 2.5-V I/O standard is formulated under EIA/JEDEC Standard,

EIA/JESD8-5: 2.5-VÂ± 0.2-V (Normal Range), and 1.8-V â 2.7-V (Wide

Range) Power Supply Voltage and Interface Standard for

Non-Terminated Digital Integrated Circuit.

The standard defines the DC interface parameters for high-speed,

low-voltage, non-terminated digital circuits driving or being driven by

other 2.5-V devices. This standard is a general-purpose, single-ended

standard used for 2.5-V applications. It does not require the use of a VREF

or a VTT.

4â4

Stratix II Device Handbook, Volume 2

Altera Corporation

January 2008

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