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DC and Switching Characteristics
24 www.xilinx.com DS610-3 (v2.0) July 16, 2007
Product Specification
R
Table 19:
Setup and Hold Times for the IOB Input Path
Symbol Description Conditions
IFD_DELAY_
VALUE Device
Speed Grade
Units
-5 -4
Min Min
Setup Times
T
IOPICK
Time from the setup of data at
the Input pin to the active
transition at the ICLK input of
the Input Flip-Flop (IFF). No
Input Delay is programmed.
LVCMO S25
(2)
0 All 1.36 1.74 ns
T
IOPICKD
Time from the setup of data at
the Input pin to the active
transition at the ICLK input of
the Input Flip-Flop (IFF). The
Input Delay is programmed.
LVCMO S25
(2)
1 All 1.79 2.17 ns
2 All 2.55 2.92 ns
3 All 3.38 3.76 ns
4 All 3.75 4.32 ns
5 All 3.81 4.19 ns
6 All 4.39 5.09 ns
7 All 5.16 5.98 ns
8 All 5.69 6.57 ns
Hold Times
T
IOICKP
Time from the active transition
at the ICLK input of the Input
Flip-Flop (IFF) to the point
where data must be held at the
Input pin. No Input Delay is
programmed.
LVCMO S25
(2)
0All-0.71-0.71ns
T
IOICKPD
Time from the active transition
at the ICLK input of the Input
Flip-Flop (IFF) to the point
where data must be held at the
Input pin. The Input Delay is
programmed.
LVCMO S25
(2)
1All-1.60-1.60ns
2All-2.06-2.06ns
3All-2.46-2.46ns
4All-2.86-2.86ns
5All-2.88-2.88ns
6All-3.24-3.24ns
7All-3.55-3.55ns
8All-3.89-3.89ns
Set/Reset Pulse Width
T
RPW_IOB
Minimum pulse width to SR
control input on IOB
All 1.33 1.61 ns
Notes:
1. The numbers in this table are tested using the methodology presented in Table 25 and are based on the operating conditions set forth in
Table 7 and Table 10.
2. This setup time requires adjustment whenever a signal standard other than LVCMOS25 is assigned to the data Input. If this is true, add the
appropriate Input adjustment from Table 21.
3. These hold times require adjustment whenever a signal standard other than LVCMOS25 is assigned to the data Input. If this is true, subtract
the appropriate Input adjustment from Table 21. When the hold time is negative, it is possible to change the data before the clock’s active
edge.