XC3S50A Xilinx Corp., XC3S50A Datasheet - Page 16

• Manufacturer Part Number: XC3S50A
• Description: Spartan-3a Fpga Family Data Sheet
• Manufacturer: Xilinx Corp.

DC and Switching Characteristics
Single-Ended I/O Standards
Table 11: Recommended Operating Conditions for User I/Os Using Single-Ended Standards
16
Notes:
1.
2.
3.
4.
5.
LVTTL
LVCMOS33
LVCMOS25
LVCMOS18
LVCMOS15
LVCMOS12
PCI33_3
PCI66_3
PCIX
HSTL_I
HSTL_III
HSTL_I_18
HSTL_II_18
HSTL_III_18
SSTL18_I
SSTL18_II
SSTL2_I
SSTL2_II
SSTL3_I
SSTL3_II
IOSTANDARD
Descriptions of the symbols used in this table are as follows:
V
V
V
V
In general, the V
and for PCI I/O standards.
For device operation, the maximum signal voltage (V
There is approximately 100 mV of hysteresis on inputs using LVCMOS33 and LVCMOS25 I/O standards.
All Dedicated pins (PROG_B, DONE, SUSPEND, TCK, TDI, TDO, and TMS) draw power from the V
LVCMOS33 standard depending on V
When using these pins as part of a standard 2.5V configuration interface, apply 2.5V to the V
well as throughout configuration.
CCO
REF
IL
IH
Attribute
– the input voltage that indicates a Low logic level
– the input voltage that indicates a High logic level
– the reference voltage for setting the input switching threshold
– the supply voltage for output drivers
(4)
(4,5)
(4)
(4)
(4)
CCO
rails supply only output drivers, not input circuits. The exceptions are for LVCMOS25 inputs when V
Min (V)
1.65
3.0
3.0
2.3
1.4
1.1
3.0
3.0
3.0
1.4
1.4
1.7
1.7
1.7
1.7
1.7
2.3
2.3
3.0
3.0
V
CCO
Nom (V)
for Drivers
CCAUX
3.3
3.3
2.5
1.8
1.5
1.2
3.3
3.3
3.3
1.5
1.5
1.8
1.8
1.8
1.8
1.8
2.5
2.5
3.3
3.3
. The Dual-Purpose configuration pins use the LVCMOS25 standard before the User mode.
(2)
Max (V)
1.95
3.6
3.6
2.7
1.6
1.3
3.6
3.6
3.6
1.6
1.6
1.9
1.9
1.9
1.9
1.9
2.7
2.7
3.6
3.6
IH
max) can be as high as V
www.xilinx.com
Min (V)
0.833
0.833
0.68
1.15
1.15
0.8
1.3
1.3
–
–
–
V
these I/O standards
REF
Nom (V)
is not used for
0.900
0.900
V
0.75
1.25
1.25
0.9
0.9
0.9
1.1
1.5
1.5
REF
IN
max. See
Max (V)
0.969
0.969
1.38
1.38
0.9
1.1
1.7
1.7
CCO
–
–
-
Table
lines of Banks 0, 1, and 2 at power-on as
4.
CCAUX
V
V
V
V
0.35 • V
0.3 • V
0.3 • V
V
V
V
V
V
V
V
REF
REF
REF
REF
Max (V)
REF
REF
REF
REF
REF
REF
REF
rail and use the LVCMOS25 or
0.38
0.38
0.38
DS529-3 (v1.5) July 10, 2007
V
0.8
0.8
0.7
- 0.125
- 0.125
- 0.150
- 0.150
IL
- 0.1
- 0.1
- 0.1
- 0.1
- 0.1
- 0.2
- 0.2
CCO
CCO
CCO
Product Specification
CCAUX
V
V
V
V
0.5 • V
0.5 • V
0.5 • V
V
V
V
V
V
V
V
REF
REF
REF
REF
REF
REF
REF
REF
REF
REF
REF
Min (V)
= 3.3V range
V
2.0
2.0
1.7
0.8
0.8
0.8
+ 0.125
+ 0.125
+ 0.150
+ 0.150
IH
+ 0.1
+ 0.1
+ 0.1
+ 0.1
+ 0.1
+ 0.2
+ 0.2
CCO
CCO
CCO
R