EP2SGX90EF1152I4N Altera, EP2SGX90EF1152I4N Datasheet - Page 134

• Manufacturer Part Number: EP2SGX90EF1152I4N
• Description: Stratix II GX
• Manufacturer: Altera

Specifications of EP2SGX90EF1152I4N

• Family Name: Stratix II GX
• Number Of Logic Blocks/elements: 90960
• # I/os (max): 558
• Frequency (max): 732.1MHz
• Process Technology: SRAM
• Operating Supply Voltage (typ): 1.2V
• Logic Cells: 90960
• Ram Bits: 4520448
• Operating Supply Voltage (min): 1.15V
• Operating Supply Voltage (max): 1.25V
• Operating Temp Range: -40C to 100C
• Operating Temperature Classification: Industrial
• Mounting: Surface Mount
• Pin Count: 1152
• Package Type: FC-FBGA
• Lead Free Status / Rohs Status: Compliant

I/O Structure
2–126
Stratix II GX Device Handbook, Volume 1
f
The bus-hold circuitry also pulls undriven pins away from the input
threshold voltage where noise can cause unintended high-frequency
switching. You can select this feature individually for each I/O pin. The
bus-hold output drives no higher than V
signals. If the bus-hold feature is enabled, the programmable pull-up
option cannot be used. Disable the bus-hold feature when the I/O pin has
been configured for differential signals.
The bus-hold circuitry uses a resistor with a nominal resistance (RBH) of
approximately 7 kΩ to pull the signal level to the last-driven state.
Refer to the
Stratix II GX Device Handbook for the specific sustaining current driven
through this resistor and overdrive current used to identify the
next-driven input level. This information is provided for each V
voltage level.
The bus-hold circuitry is active only after configuration. When going into
user mode, the bus-hold circuit captures the value on the pin present at
the end of configuration.
Programmable Pull-Up Resistor
Each Stratix II GX device I/O pin provides an optional programmable
pull-up resistor during user mode. If you enable this feature for an I/O
pin, the pull-up resistor (typically 25 kΩ ) holds the output to the V
level of the output pin’s bank.
Programmable pull-up resistors are only supported on user I/O pins and
are not supported on dedicated configuration pins, JTAG pins, or
dedicated clock pins.
Advanced I/O Standard Support
The Stratix II GX device IOEs support the following I/O standards:
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3.3-V LVTTL/LVCMOS
2.5-V LVTTL/LVCMOS
1.8-V LVTTL/LVCMOS
1.5-V LVCMOS
3.3-V PCI
3.3-V PCI-X mode 1
LVDS
LVPECL (on input and output clocks only)
Differential 1.5-V HSTL class I and II
Differential 1.8-V HSTL class I and II
Differential SSTL-18 class I and II
DC & Switching Characteristics
CCIO
chapter in volume 1 of the
to prevent overdriving
Altera Corporation
October 2007
CCIO
CCIO