XC3S50 Datasheet, PDF (54/192 Pages) Xilinx, Inc – Revolutionary 90-nanometer process technology

R
Spartan-3 FPGA Family: DC and Switching Characteristics
Table 9: DC Characteristics of User I/Os Using Single-Ended Standards (Continued)
Signal Standard and
Current Drive Attribute
(mA)
Test Conditions
I_OL
I_OH
(mA)
(mA)
Logic Level Characteristics
V_OL
V_OH
Max (V)
Min (V)
LVCMOS33⁽⁴⁾
2
2
4
4
–2
0.4
V_CCO - 0.4
–4
6
6
–6
8
8
–8
12
12
–12
16
16
–16
24
24
–24
LVDCI_33,
LVDCI_DV2_33
Note 3
Note 3
LVTTL⁽⁴⁾
2
2
–2
0.4
2.4
4
4
–4
6
6
–6
8
8
–8
12
12
–12
16
16
–16
24
24
–24
PCI33_3
SSTL18_I
SSTL18_I_DCI
Note 6
6.7
Note 3
Note 6
–6.7
Note 3
0.10V_CCO
V_TT - 0.475
0.90V_CCO
V_TT + 0.475
SSTL2_I
SSTL2_I_DCI
7.5
Note 3
–7.5
Note 3
V_TT - 0.61
V_TT + 0.61
SSTL2_II
SSTL2_II_DCI
15
Note 3
–15
Note 3
V_TT - 0.80
V_TT + 0.80
Notes:
1. The numbers in this table are based on the conditions set forth in Table 5 and Table 8.
2. Descriptions of the symbols used in this table are as follows:
I_OL -- the output current condition under which V_OL is tested
I_OH -- the output current condition under which V_OH is tested
V_OL -- the output voltage that indicates a Low logic level
V_OH -- the output voltage that indicates a High logic level
V_IL -- the input voltage that indicates a Low logic level
V_IH -- the input voltage that indicates a High logic level
V_CCO -- the supply voltage for output drivers as well as LVCMOS, LVTTL, and PCI inputs
V_REF -- the reference voltage for setting the input switching threshold
V_TT -- the voltage applied to a resistor termination
3. Tested according to the standard’s relevant specifications.
4. For the LVCMOS and LVTTL standards: the same V_OL and V_OH limits apply for both the Fast and Slow slew attributes.
5. All Dedicated output pins (CCLK, DONE, and TDO) as well as Dual-Purpose totem-pole output pins (D0-D7 and BUSY/DOUT)
exhibit the characteristics of LVCMOS25 with 12 mA drive and Fast slew rate. For information concerning the use of 3.3V signals,
see the 3.3V-Tolerant Configuration Interface section in Module 2: Functional Description.
6. Tested according to the relevant PCI specifications.
DS099-3 (v1.3) March 4, 2004
www.xilinx.com
7
Advance Product Specification
1-800-255-7778
40