OR2T15B7BA352-DB View Datasheet(PDF) - Lattice Semiconductor

Part Name

Description

Manufacturer

OR2T15B7BA352-DB

ORCA® Series 2 Field-Programmable Gate Arrays

Lattice Semiconductor 

Data Sheet

November 2006

ORCA Series 2 FPGAs

Timing Characteristics (continued)

Table 34B. OR2TxxB Ripple Mode PFU Timing Characteristics

OR2TxxB Commercial: VDD = 3.0 V to 3.6 V, 0 °C ≤ TA ≤ 70 °C; OR2TxxB Industrial: VDD = 3.0 V to 3.6 V, –40 °C ≤ TA ≤

+85 °C.

Speed

Parameter

Symbol

-7

-8

Unit

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

2.4

—

1.9

—

ns

E Bitwise Operands to Clock

FRIP_SET

1.1

—

0.9

—

ns

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

Carry-in from Fast Carry to Clock

CIN_SET

1.6

—

1.3

—

ns

(CIN to CK)

IC Carry-in from General Routing to Clock

B4_SET

1.0

—

0.8

—

ns

(B4 to CK)

D Add/Subtract to Clock (A4 to CK)

AS_SET

2.9

—

2.3

—

ns

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

TH

ns

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

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

RIP_CODEL

2.2

—

1.8

—

ns

to COUT)

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

RIP_O4DEL

3.0

—

2.4

—

ns

U to O4)

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

RIP_DEL

3.1

—

2.5

—

ns

to F[3:0])

D Bitwise Operands to PFU Out (A[i], B[i]

FRIP_DEL

1.4

—

1.1

—

ns

IN to F[i])

Carry-in from Fast Carry to Carry-out

CIN_CODEL

0.7

—

0.6

—

ns

(CIN to COUT)

Carry-in from Fast Carry to Carry-out

CIN_O4DEL

1.4

—

1.2

—

ns

T T (CIN to O4)

Carry-in from Fast Carry to PFU Out

CIN_DEL

1.9

—

1.5

—

ns

(CIN to F[3:0])

C Carry-in from General Routing to Carry-

B4_CODEL

0.7

—

0.6

—

ns

N out (B4 to COUT)

Carry-in from General Routing to Carry-

B4_O4DEL

1.4

—

1.2

—

ns

out (B4 to O4)

E Carry-in from General Routing to PFU

B4_DEL

1.9

—

1.5

—

ns

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

Add/Subtract to Carry-out (A4 to COUT)

AS_CODEL

2.7

—

2.2

—

ns

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

AS_O4DEL

3.4

—

2.8

—

ns

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

AS_DEL

3.6

—

2.9

—

ns

SE DISC Notes: The new 4 x 1 multiplier and 4-bit comparator submodes use the appropriate ripple mode timing shown above.

Lattice Semiconductor

139

Share Link: