OR2T15B7BA352-DB View Datasheet(PDF) - Lattice Semiconductor

Part Name

Description

Manufacturer

OR2T15B7BA352-DB

ORCA® Series 2 Field-Programmable Gate Arrays

Lattice Semiconductor 

ORCA Series 2 FPGAs

Data Sheet

November 2006

Timing Characteristics (continued)

Table 34A. OR2CxxA and OR2TxxA Ripple Mode 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.

Speed

Parameter

Symbol

-3

-4

-5

-6

-7

Unit

Min Max Min Max Min Max Min Max Min Max

S Ripple Setup Times

(TJ = +85 °C, VDD = min):

Operands to Clock (A[3:0], B[3:0] to CK) RIP_SET 5.0 — 3.7 — 3.3 — 2.8 — 2.5 — ns

E Bitwise Operands to Clock

FRIP_SET 1.7 — 1.3 — 1.2 — 1.0 — 0.9 — ns

(A[i], B[i] to CK at F[i])

Carry-in from Fast Carry to Clock

CIN_SET 3.2 — 1.9 — 1.7 — 1.4 — 1.3 — ns

(CIN to CK)

IC Carry-in from General Routing to Clock

B4_SET 3.2 — 1.9 — 1.7 — 1.4 — 1.3 — ns

(B4 to CK)

D Add/Subtract to Clock (A4 to CK)

AS_SET 5.6 — 4.3 — 3.9 — 3.2 — 3.1 — ns

Ripple Hold Times (TJ = all, VDD = all): All

TH

0.0 — 0.0 — 0.0 — 0.0 — 0.0 — ns

V Ripple Delays (TJ = 85 °C, VDD = min):

E Operands to Carry-out (A[3:0], B[3:0]

RIP_CODEL — 3.8 — 3.3 — 2.6 — 2.1 — 1.8 ns

to COUT)

Operands to Carry-out (A[3:0], B[3:0]

RIP_O4DEL — 4.8 — 4.2 — 3.4 — 2.6 — 2.4 ns

E U toO4)

Operands to PFU Out (A[3:0], B[3:0]

RIP_DEL — 6.0 — 4.7 — 3.8 — 3.2 — 2.8 ns

to F[3:0])

D Bitwise Operands to PFU Out (A[i], B[i] FRIP_DEL — 2.8 — 2.1 — 1.7 — 1.6 — 1.5 ns

IN to F[i])

Carry-in from Fast Carry to Carry-out

CIN_CODEL — 1.6 — 1.1 — 0.9 — 0.7 — 0.6 ns

(CIN to COUT)

Carry-in from Fast Carry to Carry-out

CIN_O4DEL — 2.6 — 2.1 — 1.7 — 1.3 — 1.1 ns

T (CIN to O4)

T Carry-in from Fast Carry to PFU Out

CIN_DEL — 4.2 — 2.9 — 2.3 — 2.2 — 1.7 ns

(CIN to F[3:0])

C Carry-in from General Routing to Carry- B4_CODEL — 1.6 — 1.1 — 0.9 — 0.7 — 0.6 ns

N out (B4 to COUT)

Carry-in from General Routing to Carry- B4_O4DEL — 2.6 — 2.1 — 1.7 — 1.3 — 1.1 ns

out (B4 to O4)

E Carry-in from General Routing to PFU

B4_DEL — 4.2 — 2.9 — 2.3 — 2.2 — 2.1 ns

O Out (B4 to F[3:0])

Add/Subtract to Carry-out (A4 to COUT) AS_CODEL — 4.5 — 3.9 — 3.1 — 2.5 — 2.3 ns

L Add/Subtract to Carry-out (A4 to O4)

AS_O4DEL — 5.6 — 4.9 — 3.9 — 3.1 — 2.8 ns

Add/Subtract to PFU Out (A4 to F[3:0])

AS_DEL — 6.8 — 5.3 — 4.3 — 3.5 — 3.1 ns

E C Notes:

S DIS The new 4 x 1 multiplier and 4-bit comparator submodes use the appropriate ripple mode timing shown above.

138

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