IDT72291L20TFI IDT, Integrated Device Technology Inc, IDT72291L20TFI Datasheet - Page 17

• Manufacturer Part Number: IDT72291L20TFI
• Description: IC FIFO 65536X18 LP 20NS 64QFP
• Manufacturer: IDT, Integrated Device Technology Inc
• Series: 7200r

Specifications of IDT72291L20TFI

• Function: Synchronous
• Memory Size: 1.1M (65K x 18)
• Data Rate: 50MHz
• Access Time: 20ns
• Voltage - Supply: 4.5 V ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 64-STQFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: 72291L20TFI

NOTES:
1. t
2. LD = HIGH, OE = LOW, EF = HIGH.
NOTES:
1. t
2. LD = HIGH.
IDT72281/72291
CMOS SuperSync FIFO™ 65,536 x 9 and 131,072 x 9
Q
D
WCLK
Q
rising edge of the RCLK and the rising edge of the WCLK is less than t
the rising edge of WCLK and the rising edge of RCLK is less than t
D
RCLK
SKEW1
0
0
SKEW3
WEN
REN
WCLK
0
0
- Q
- D
RCLK
OE
WEN
EF
REN
- D
- Q
n
n
is the minimum time between a rising RCLK edge and a rising WCLK edge to guarantee that FF will go high (after one WCLK cycle pus t
is the minimum time between a rising WCLK edge and a rising RCLK edge to guarantee that EF will go HIGH (after one RCLK cycle plus t
n
n
t
ENS
t
DATA IN OUTPUT REGISTER
ENS
t
OLZ
t
t
ENH
SKEW1
t
Figure 8. Read Cycle, Empty Flag and First Data Word Latency Timing (IDT Standard Mode)
REF
t
A
t
OE
(1)
t
SKEW3
t
t
ENS
ENH
t
DS
D
t
(1)
A
0
1
Figure 7. Write Cycle and Full Flag Timing (IDT Standard Mode)
NO WRITE
t
t
DHS
ENH
NO OPERATION
LAST WORD
1
2
t
WFF
SKEW3
t
t
OHZ
t
DS
t
DS
ENS
SKEW1
, then EF deassertion may be delayed one extra RCLK cycle.
D
, then the FF deassertion may be delayed one extra WCLK cycle.
D
1
X
t
CLKH
t
WFF
NO OPERATION
t
t
ENH
DH
DATA READ
17
t
t
DH
CLK
2
t
CLKL
t
t
CLKH
t
REF
ENS
t
OLZ
t
SKEW1
t
CLK
(1)
t
t
CLKL
ENS
t
ENH
LAST WORD
t
A
1
NO WRITE
t
ENH
t
A
COMMERCIAL AND INDUSTRIAL
2
TEMPERATURE RANGES
NEXT DATA READ
t
WFF
t
WFF
ENS
t
REF
DS
). If the time between the
). If the time between
D
0
D
X
+1
t
REF
4675 drw 10
t
t
ENH
A
t
DH
t
WFF
4675 drw 11
D
1