IDT72V291L15PFI IDT, Integrated Device Technology Inc, IDT72V291L15PFI Datasheet - Page 25

• Manufacturer Part Number: IDT72V291L15PFI
• Description: IC FIFO SS 32768X36 15NS 64QFP
• Manufacturer: IDT, Integrated Device Technology Inc
• Series: 72Vr

Specifications of IDT72V291L15PFI

• Function: Synchronous
• Memory Size: 1.1M (32K x 36)
• Data Rate: 67MHz
• Access Time: 15ns
• Voltage - Supply: 3 V ~ 3.6 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 64-TQFP, 64-VQFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: 72V291L15PFI

IDT72V281/72V291 3.3V CMOS SUPERSYNC FIFO
65,536 x 9 and 131,072 x 9
FIFO in the chain to go LOW after a word has been read from the last FIFO is
the sum of the delays for each individual FIFO:
where N is the number of FIFOs in the expansion and T
period. Note that extra cycles should be added for the possibility that the
FWFT/SI
DATA IN
WRITE CLOCK
WRITE ENABLE
INPUT READY
For a full expansion configuration, the amount of time it takes for IR of the first
n
(N – 1)*(3*transfer clock) + 2 T
IR
Dn
WCLK
WEN
Figure 22. Block Diagram of 131,072 x 9 and 262,144 x 9 Depth Expansion
FWFT/SI
72V281
72V291
IDT
TRANSFER CLOCK
RCLK
TM
REN
WCLK
OE
OR
Qn
WCLK
is the WCLK
GND
25
n
t
transfer clock, for the IR flag.
whichever is faster. Both these actions result in data moving, as quickly as
possible, to the end of the chain and free locations to the beginning of the
chain.
SKEW1
The Transfer Clock line should be tied to either WCLK or RCLK,
specification is not met between RCLK and transfer clock, or WCLK and
WCLK
IR
WEN
Dn
FWFT/SI
72V281
72V291
IDT
COMMERCIAL AND INDUSTRIAL
RCLK
REN
OR
TEMPERATURE RANGES
Qn
OE
OUTPUT ENABLE
n
OUTPUT READY
READ ENABLE
READ CLOCK
DATA OUT
4513 drw 25