EP1S40B956C5 Altera, EP1S40B956C5 Datasheet - Page 863

• Manufacturer Part Number: EP1S40B956C5
• Description: IC STRATIX FPGA 40K LE 956-BGA
• Manufacturer: Altera
• Series: Stratix®r

Specifications of EP1S40B956C5

• Number Of Logic Elements/cells: 41250
• Number Of Labs/clbs: 4125
• Total Ram Bits: 3423744
• Number Of I /o: 683
• Voltage - Supply: 1.425 V ~ 1.575 V
• Mounting Type: Surface Mount
• Operating Temperature: 0°C ~ 85°C
• Package / Case: 956-BGA
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Number Of Gates: -

Figure 14–20. Split Board Layout for 2.5-V Systems With 5.0-V & 1.5-V Devices
Conclusion
Altera Corporation
January 2005
PCB
Device
Device
2.5-V
2.5-V
Device
5.0-V
5.0 V
Split-Plane Method
The split-plane design method reduces the number of planes required by
placing two power supply planes in one plane (see
example, the layout for this method can be structured as follows:
■
■
This technique assumes that the majority of devices are 2.5-V. To support
MultiVolt I/O, Altera devices must have access to 1.5-V and 2.5-V planes.
With the proliferation of multiple voltage levels in systems, it is
important to design a voltage system that can support a low-power
device like Cyclone devices. Designers must consider key elements of the
PCB, such as power supplies, regulators, power consumption, and board
layout when successfully designing a system that incorporates the low-
voltage Cyclone family of devices.
One 2.5-V plane, covering the entire board
One plane split between 5.0-V and 1.5-V
Device
Device
5.0-V
2.5-V
Regulator
Device
1.5-V
Stratix Device Handbook, Volume 2
Cyclone
1.5 V
Designing with 1.5-V Devices
(1.5 V)
FPGA
Altera
Figure
Device
Device
1.5-V
2.5-V
14–20). For
14–23