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Lattice Semiconductor
111
Data Sheet
November 2006
ORCA Series 3C and 3T FPGAs
Timing Characteristics (continued)
Table 48. Programmable I/O (PIO) Timing Characteristics (continued)
OR3Cxx Commercial: VDD = 5.0 V ± 5%, 0 °C
< TA < 70 °C; Industrial: VDD = 5.0 V ± 10%, –40 °C < TA < +85 °C.
OR3Txxx Commercial: VDD = 3.0 V to 3.6 V, 0 °C
< TA < 70 °C; Industrial: VDD = 3.0 V to 3.6 V, –40 °C < TA < +85 °C.
Parameter
Symbol
Speed
Unit
-4
-5
-6
-7
Min
Max
Min
Max
Min
Max
Min
Max
Output Delays
(TJ = 85 °C, VDD = min, CL = 50 pF)
Output to Pad (OUT2, OUT1 direct to pad):
Fast
Slewlim
Sinklim
OUTF_DEL
OUTSL_DEL
OUTSI_DEL
—
5.09
7.86
9.41
—
4.21
6.49
7.98
—
2.63
3.49
8.08
—
2.17
2.91
7.32
ns
3-state Enable/Disable Delay (TS to pad):
Fast
Slewlim
Sinklim
TSF_DEL
TSSL_DEL
TSSI_DEL
—
4.93
7.70
9.25
—
4.09
6.37
7.86
—
2.33
3.00
7.95
—
1.88
2.41
7.23
ns
Local Set/Reset (async) to Pad (LSR to pad):
Fast
Slewlim
Sinklim
OUTLSRF_DEL
OUTLSRSL_DEL
OUTLSRSI_DEL
—
9.03
11.79
13.35
—
7.25
9.53
11.02
—
4.96
5.82
10.38
—
3.94
4.67
9.10
ns
Global Set/Reset to Pad (GSRN to pad):
Fast
Slewlim
Sinklim
OUTGSRF_DEL
OUTGSRSL_DEL
OUTGSRSI_DEL
—
8.30
11.06
12.62
—
6.69
8.97
10.46
—
4.39
5.07
10.02
—
3.46
3.99
8.81
ns
Output FF Setup Timing:
Out to ExpressCLK (OUT[2:1] to ECLK)
Out to Clock (OUT[2:1] to CLK)
Clock Enable to Clock (CE to CLK)
Local Set/Reset (sync) to Clock (LSR to CLK)
OUTE_SET
OUT_SET
OUTCE_SET
OUTLSR_SET
0.00
0.91
0.41
—
0.00
0.67
0.32
—
0.00
0.56
0.26
—
0.00
0.45
0.24
—
ns
Output FF Hold Timing:
Out from ExpressCLK (OUT[2:1] from ECLK)
Out from Clock (OUT[2:1] from CLK)
Clock Enable from Clock (CE from CLK)
Local Set/Reset (sync) from Clock (LSR from
CLK)
OUTE_HLD
OUT_HLD
OUTCE_HLD
OUTLSR_HLD
0.73
0.00
—
0.58
0.00
—
0.36
0.00
—
0.29
0.00
—
ns
Clock to Pad Delay (ECLK, SCLK to pad):
Fast
Slewlim
Sinklim
OUTREGF_DEL
OUTREGSL_DEL
OUTREGSI_DEL
—
6.71
9.47
11.03
—
5.44
7.71
9.20
—
3.56
4.42
8.98
—
2.78
3.52
7.94
ns
Additional Delay If Using Open Drain
OD_DEL
—
0.20
—
0.16
—
0.10
—
0.08
ns
Note: The delays for all input buffers assume an input rise/fall time of <1 V/ns.
Select
devices
have
been
discontinued.
See
Ordering
Information
section
for
product
status.