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APEX20K Datasheet(PDF) 113 Page - Altera Corporation

Part # APEX20K
Description  Programmable Logic Device Family
PDF  117 Pages
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Manufacturer  ALTERA [Altera Corporation]
Direct Link  http://www.altera.com
Logo ALTERA - Altera Corporation

APEX20K Datasheet(HTML) 113 Page - Altera Corporation

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Altera Corporation
113
APEX 20K Programmable Logic Device Family Data Sheet
Power
Consumption
To estimate device power consumption, use the interactive power
calculator on the Altera web site at http://www.altera.com.
Configuration &
Operation
The APEX 20K architecture supports several configuration schemes. This
section summarizes the device operating modes and available device
configuration schemes.
Operating Modes
The APEX architecture uses SRAM configuration elements that require
configuration data to be loaded each time the circuit powers up. The
process of physically loading the SRAM data into the device is called
configuration. During initialization, which occurs immediately after
configuration, the device resets registers, enables I/O pins, and begins to
operate as a logic device. The I/O pins are tri-stated during power-up,
and before and during configuration. Together, the configuration and
initialization processes are called command mode; normal device operation
is called user mode.
Before and during device configuration, all I/O pins are pulled to VCCIO
by a built-in weak pull-up resistor.
Table 110. Selectable I/O Standard Output Delays
Symbol
-1 Speed Grade
-2 Speed Grade
-3 Speed Grade
Unit
Min
Max
Min
Max
Min
Max
Min
LVCMOS
0.00
0.00
0.00
ns
LVTTL
0.00
0.00
0.00
ns
2.5 V
0.00
0.09
0.10
ns
1.8 V
2.49
2.98
3.03
ns
PCI
–0.03
0.17
0.16
ns
GTL+
0.75
0.75
0.76
ns
SSTL-3 Class I
1.39
1.51
1.50
ns
SSTL-3 Class II
1.11
1.23
1.23
ns
SSTL-2 Class I
1.35
1.48
1.47
ns
SSTL-2 Class II
1.00
1.12
1.12
ns
LVDS
–0.48
–0.48
–0.48
ns
CTT
0.00
0.00
0.00
ns
AGP
0.00
0.00
0.00
ns



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