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Data Sheet
ORCA Series 2 FPGAs
June 1999
134
Lucent Technologies Inc.
Timing Characteristics (continued)
1.The input buffers contain a programmable delay to allow the hold time vs. the external clock pin to be equal to 0.
Note: Speed grades of -5, -6, and -7 are for OR2TxxA devices only.
Table 33A. OR2CxxA and OR2TxxA Sequential PFU Timing Characteristics
OR2CxxA Commercial: VDD = 5.0 V ± 5%, 0 °C
≤ TA ≤ 70 °C; OR2CxxA Industrial: VDD = 5.0 V ± 10%, –40 °C ≤ TA ≤ +85 °C.
OR2TxxA Commercial: VDD = 3.0 V to 3.6 V, 0 °C
≤ TA ≤ 70 °C; OR2TxxA Industrial: VDD = 3.0 V to 3.6 V, –40 °C ≤ TA ≤ +85 °C.
Parameter
Symbol
Speed
Unit
-2
-3
-4
-5
-6
-7
Min
Max
Min
Max Min Max Min Max Min Max Min Max
Input Requirements
Clock Low Time
TCL
3.2
—
2.5
—
2.0
—
1.8
—
1.7
—
1.6
—
ns
Clock High Time
TCH
3.2
—
2.5
—
2.0
—
1.8
—
1.7
—
1.6
—
ns
Global S/R Pulse Width (GSRN)
TRW
2.8
—
2.5
—
2.0
—
1.8
—
1.7
—
1.6
—
ns
Local S/R Pulse Width
TPW
3.0
—
2.5
—
2.0
—
1.8
—
1.7
—
1.6
—
ns
Combinatorial Setup Times (TJ = 85 °C,
VDD = min):
Four Input Variables to Clock
(A[4:0], B[4:0] to CK)
Five Input Variables to Clock
(A[4:0], B[4:0] to CK)
PFUMUX to Clock (A[4:0], B[4:0] to CK)
PFUMUX to Clock (C0 to CK)
PFUNAND to Clock (A[4:0], B[4:0] to CK)
PFUNAND to Clock (C0 to CK)
PFUXOR to Clock (A[4:0], B[4:0] to CK)
PFUXOR to Clock (C0 to CK)
Data In to Clock (WD[3:0] to CK)
Clock Enable to Clock (CE to CK)
Local Set/Reset (synchronous) (LSR to CK)
Data Select to Clock (SEL to CK)
Pad Direct In
F4*_SET
F5*_SET
MUX_SET
C0MUX_SET
ND_SET
C0ND_SET
XOR_SET
C0XOR_SET
D*_SET
CKEN_SET
LSR_SET
SELECT_SET
PDIN_SET
2.4
2.5
3.9
1.5
3.9
1.7
4.8
1.6
0.5
1.6
1.7
1.9
0.0
—
1.7
1.9
2.9
1.2
2.9
1.2
3.6
1.2
0.1
1.2
1.4
1.5
0.0
—
1.3
2.3
0.9
2.2
0.6
3.0
0.9
0.1
1.0
1.3
1.4
0.0
—
1.1
1.2
2.1
0.8
2.0
0.5
2.7
0.8
0.0
0.9
1.2
1.3
0.0
—
1.0
1.6
0.7
1.7
0.5
2.1
0.7
0.1
0.9
1.1
1.2
0.0
—
0.9
1.5
0.6
1.6
0.5
2.0
0.6
0.1
0.6
0.8
1.0
0.0
—
ns
Combinatorial Hold Times (TJ = all, VDD = all):
Data In (WD[3:0] from CK)
Clock Enable (CE from CK)
Local Set/Reset (synchronous) (LSR from CK)
Data Select (sel from CK)
Pad Direct In Hold (DIA[3:0], DIB[3:0] to CK)1
All Others
D*_HLD
CKEN_HLD
LSR_HLD
SELECT_HLD
PDIN_HLD
—
0.6
0.0
1.5
0.0
—
0.4
0.0
1.4
0.0
—
0.4
0.0
1.0
0.0
—
0.4
0.0
0.9
0.0
—
0.3
0.0
0.8
0.0
—
0.3
0.0
0.8
0.0
—
ns
Output Characteristics
Sequential Delays (TJ = 85 °C, VDD = min):
Local S/R (async) to PFU Out (LSR to Q[3:0])
Global S/R to PFU Out (GSRN to Q[3:0])
Clock to PFU Out (CK to Q[3:0])—Register
Clock to PFU Out (CK to Q[3:0])—Latch
Transparent Latch (WD[3:0] to Q[3:0])
LSR_DEL
GSR_DEL
REG_DEL
LTCH_DEL
LTCH_DDEL
—
4.5
2.9
2.4
2.5
3.5
—
3.4
2.3
2.0
2.7
—
3.1
2.0
1.9
2.5
—
2.5
1.6
1.5
2.0
—
2.0
1.3
2.0
—
1.6
1.2
1.0
1.8
ns