XC5204 XILINX [Xilinx, Inc], XC5204 Datasheet - Page 49

• Manufacturer Part Number: XC5204
• Description: Field Programmable Gate Arrays
• Manufacturer: XILINX [Xilinx, Inc]

XC5200 IOB Switching Characteristic Guidelines
Testing of the switching parameters is modeled after testing methods specified by MIL-M-38510/605. All devices are 100%
functionally tested. Since many internal timing parameters cannot be measured directly, they are derived from benchmark
timing patterns. The following guidelines reflect worst-case values over the recommended operating conditions. For more
detailed, more precise, and more up-to-date timing information, use the values provided by the timing calculator and used
in the simulator.
November 5, 1998 (Version 5.2)
Input
Propagation Delays from CMOS or TTL Levels
Output
Propagation Delays to CMOS or TTL Levels
Note:
Pad to I (no delay)
Pad to I (with delay)
Output (O) to Pad (fast)
Output (O) to Pad (slew-limited)
From clock (CK) to output pad (fast), using direct connect between Q
and output (O)
From clock (CK) to output pad (slew-limited), using direct connect be-
tween Q and output (O)
3-state to Pad active (fast)
3-state to Pad active (slew-limited)
Internal GTS to Pad active
1. Timing is measured at pin threshold, with 50-pF external capacitance loads. Slew-limited output rise/fall times are
2. Unused and unbonded IOBs are configured by default as inputs with internal pull-up resistors.
3. Timing is based upon the XC5215 device. For other devices, see Timing Calculator.
approximately two times longer than fast output rise/fall times.
R
Description
XC5200 Series Field Programmable Gate Arrays
Speed Grade
Symbol
T
T
T
T
T
T
T
T
OKPOF
OKPOS
TSONF
TSONS
T
OPS
OPF
GTS
PID
PI
Max
11.4
10.1
14.9
10.4
17.7
(ns)
5.7
4.6
9.5
5.6
-6
Max
10.2
13.1
15.9
(ns)
5.0
4.5
8.4
9.3
5.2
9.0
-5
Max
10.2
11.8
14.7
(ns)
4.8
4.5
8.0
8.3
4.9
8.3
-4
Max
(ns)
10.0
13.5
3.3
9.5
3.5
5.0
7.5
4.6
6.0
-3
7-131
7