XC2S50 Xilinx, Inc., XC2S50 Datasheet - Page 56

• Manufacturer Part Number: XC2S50
• Description: Spartan-II 2.5V FPGA Family
• Manufacturer: Xilinx, Inc.

Power-On Requirements
Spartan-II FPGAs require that a minimum supply current
I
power-on. If more current is available, the FPGA can con-
sume more than I
adversely affect reliability.
DC Input and Output Levels
Values for V
Values for V
over the recommended operating conditions. Only selected
standards are tested. These are chosen to ensure that all
DS001-3 (v2.7) September 3, 2003
Product Specification
Notes:
1.
2.
3.
4.
5.
6.
CCPO
T
LVTTL
LVCMOS2
PCI, 3.3V
PCI, 5.0V
GTL
GTL+
HSTL I
HSTL III
HSTL IV
SSTL3 I
SSTL3 II
SSTL2 I
SSTL2 II
Input/Output
Symbol
I
CCPO
CCPO
Standard
During power-on, the V
The date code is printed on the top of the device’s package. See the
The expected T
temperature column to find the associated current values in the appropriate new or old requirements column according to the date
code. Then choose the highest of these current values to serve as the minimum I
if the junction temperature for a given design is -25°C ≤ T
If 5°C ≤ T
The I
The ramp time is measured from GND to V
For more information on designing to meet the power-on specifications, refer to the application note
Requirements for the Spartan-II and Spartan-IIE Families"
(1)
be provided to the V
(4,5)
(3)
CCPO
R
J
IL
OL
Total V
current required
during power-on
V
≤ 90°C, then the new minimum I
requirement applies for a brief time (commonly only a few milliseconds) when V
CCINT
and V
and V
J
Description
V, Min
–0.5
–0.5
–0.5
–0.5
–0.5
–0.5
–0.5
–0.5
–0.5
–0.5
–0.5
–0.5
–0.5
range for the design determines the I
CCPO
CCINT
ramp time
IH
OH
are recommended input voltages.
CCINT
are guaranteed output voltages
supply
minimum, though this cannot
V
IL
CCINT
44% V
V
V
V
V
V
V
V
V
V
ramp must increase steadily in voltage with no dips.
REF
REF
REF
REF
REF
REF
REF
REF
REF
V, Max
0.8
0.7
0.8
– 0.05
– 0.1
– 0.1
– 0.1
– 0.1
– 0.2
– 0.2
– 0.2
– 0.2
CCINT
lines for a successful
–40°C ≤ T
–20°C ≤ T
0°C ≤ T
85°C < T
–40°C ≤ T
Temperature
CCPO
Junction
CCINT
60% V
V
J
V
V
V
V
V
V
V
V
REF
≤ 85°C
J
REF
REF
REF
REF
REF
REF
REF
REF
V, Min
J
J
J
requirement is 0.5A.
≤ 100°C
max on a fully loaded board.
2.0
1.7
2.0
< –20°C
< 0°C
≤ 100°C
Conditions
+ 0.05
+ 0.1
+ 0.1
+ 0.1
+ 0.1
+ 0.2
+ 0.2
+ 0.2
+ 0.2
CCINT
CCPO
(2)
www.xilinx.com
1-800-255-7778
Spartan-II 2.5V FPGA Family: DC and Switching Characteristics
J
V
≤ 75°C, then the new minimum I
IH
minimum requirement. Use the applicable ranges in the junction
Temperature
V
Commercial
CCO
Industrial
Industrial
Industrial
V, Max
Device
Grade
A maximum limit for I
use of foldback/crowbar supplies and fuses deserves spe-
cial attention. In these cases, limit the I
level below the trip point for over-current protection in order
to avoid inadvertently shutting down the supply.
standards meet their specifications. The selected standards
are tested at minimum V
currents shown. Other standards are sample tested.
5.5
5.5
5.5
3.6
3.6
3.6
3.6
3.6
3.6
3.6
3.6
3.6
All
+ 0.5
Device Part Marking
V
V
V
V
10% V
For Devices with
Requirements
Date Code 0321
REF
REF
REF
REF
V, Max
1.50
1.00
0.25
0.50
CCPO
Min
0.55
V
0.4
0.4
0.4
0.6
0.4
0.4
0.4
-
OL
– 0.6
– 0.8
– 0.6
– 0.8
or Later
CCO
New
requirement that must be met. For example,
CCPO
CCPO
CCINT
section in Module 1.
Max
50
CCO
V
V
V
V
V
V
V
90% V
-
-
-
-
CCO
CCO
CCO
REF
REF
REF
REF
V, Min
(1)
requirement is 1.5A.
V
ramps from 0 to 2.5V.
N/A
N/A
2.4
1.9
2.4
is not specified. Therefore the
with the respective I
OH
+ 0.6
+ 0.8
+ 0.6
+ 0.8
– 0.4
– 0.4
– 0.4
XAPP450 "Power-On Current
CCO
For Devices with
Requirements
2.00
2.00
0.50
0.50
Min
before 0321
Date Code
-
Old
Note (2)
Note (2)
15.2
mA
CCPO
I
7.6
24
12
40
36
24
48
16
OL
8
8
Max
50
-
-
-
-
Module 3 of 4
(1)
current to a
OL
Note (2)
Note (2)
–15.2
and I
–7.6
Units
–24
–12
N/A
N/A
–16
mA
I
–8
–8
–8
–8
OH
ms
A
A
A
A
OH
3