EP3SE50F780I3N Altera, EP3SE50F780I3N Datasheet - Page 495

• Manufacturer Part Number: EP3SE50F780I3N
• Description: Stratix III
• Manufacturer: Altera

Stratix III
External
Power Supply
Requirements
Altera Corporation
October 2007
Notes to
(1)
(2)
(3)
(4)
(5)
VCCL
VCC
VCCD_PLL
VCCA
VCCPT
VCCPGM
VCCPD
VCCIO
VCC_CLKIN
VCCBAT
VREF
GND
Table 16–2. Stratix III Power Supply Requirements
Supply Pin
Power
V
Designers can minimize the number of external power sources by driving the left column and supplies with the
same voltage regulator. Please note that separate power planes, decoupling capacitors and ferrite beads are
required for V
V
For 2.5 V and below I/O standards, V
This scheme is for VCCIO=2.5V
There is one VREF pin per I/O bank. You can use an external power supply or a resistor divider network to supply
this voltage.
CCL
CCPD
Table
and V
can be either 2.5 V, 3.0 V, or 3.3 V. For a 3.3-V standard, V
16–2:
VCCL
VCC
VCCD_PLL
VCCA
VCCPGM
VCCPD
VCCIO
VCCBAT
VREF
GND
CC
Board Connection
f
Recommended
CCA
can be driven with the same voltage regulator when V
and V
(1)
(2)
(5)
(4)
(3)
CCPT
This section describes the different external power supplies needed to
power Stratix III devices.
for Stratix III devices. Some of the power supply pins can be supplied
with the same external power supply, provided they need the same
voltage level, as noted in the recommended board connection column.
For possible values of each power supply, refer to the
Characteristics of Stratix III Devices
Handbook.
Programmable Power and Temperature Sensing Diode in Stratix III Devices
when implementing this scheme.
Selectable core voltage power supply
I/O registers power supply
PLL digital power supply
PLL analog power supply
Power supply for the programmable power technology
Configuration pins power supply
I/O pre-driver power supply
I/O power supply
Differential clock input pins power supply (top and bottom I/O banks only)
Battery back-up power supply for design security volatile key register
Power supply for the voltage-referenced I/O standards
Ground
CCPD
=2.5 V.
Table 16–2
CCPD
=3.3 V. For a 3.0-V I/O standard, V
chapter in the Stratix III Device
Description
CCL
lists the external power supply pins
Stratix III Device Handbook, Volume 1
=V
CC
.
DC and Switching
CCPD
=3.0 V.
16–5