IDT72221L25PFI8 IDT, Integrated Device Technology Inc, IDT72221L25PFI8 Datasheet - Page 8

• Manufacturer Part Number: IDT72221L25PFI8
• Description: IC FIFO SYNC 1KX9 25NS 32QFP
• Manufacturer: IDT, Integrated Device Technology Inc
• Series: 7200r

Specifications of IDT72221L25PFI8

• Function: Synchronous
• Memory Size: 9K (1K x 9)
• Data Rate: 40MHz
• Access Time: 25ns
• Voltage - Supply: 4.5 V ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 32-TQFP, 32-VQFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: 72221L25PFI8

©
NOTES:
1. Holding WEN2/LD HIGH during reset will make the pin act as a second write enable pin. Holding WEN2/LD LOW during reset will make the pin act as a load enable for the programmable
2. After reset, the outputs will be LOW if OE = 0 and tri-state if OE = 1.
3. The clocks (RCLK, WCLK) can be free-running during reset.
NOTE:
1. t
IDT72421/72201/72211/72221/72231/72241/72251 CMOS SyncFIFO™
64 x 9, 256 x 9, 512 x 9, 1,024 x 9, 2,048 x 9, 4,096 x 9 and 8,192 x 9
REN1, REN2
(If Applicable)
flag offset registers.
and the rising edge of WCLK is less than t
WEN2/LD
SKEW1
EF, PAE
FF, PAF
Q
WEN1
0
is the minimum time between a rising RCLK edge and a rising WCLK edge for FF to change during the current clock cycle. If the time between the rising edge of RCLK
D
WEN2/
- Q
WCLK
REN1,
WEN1
RCLK
REN2
RS
0
- D
8
FF
(1)
8
t
SKEW1
(1)
SKEW
1, then FF may not change state until the next WCLK edge.
t
t
t
RSF
RSF
t
CLKH
RSF
t
WFF
t
RS
DATA IN VALID
t
t
t
Figure 5. Write Cycle Timing
RSS
RSS
RSS
Figure 4. Reset Timing
t
CLK
8
t
CLKL
t
t
ENS
ENS
t
DS
t
t
t
DH
ENH
ENH
t
t
t
RSR
RSR
RSR
t
WFF
OE = 1
COMMERCIAL AND INDUSTRIAL
OE = 0
NO OPERATION
NO OPERATION
(2)
TEMPERATURE RANGES
OCTOBER 22, 2008
2655 drw 07
2655 drw 06