IDT72291L20TFI IDT, Integrated Device Technology Inc, IDT72291L20TFI Datasheet - Page 21

• 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. Retransmit setup is complete after OR returns LOW.
2. No more than D – 2 words may be written to the FIFO between Reset (Master or Partial) and Retransmit setup. Therefore, IR will be LOW throughout the Retransmit setup
3. OE = LOW.
4. W
5. OR goes LOW at 60 ns + 2 RCLK cycles + t
NOTE:
1. X = 15 for the IDT72281 and X = 16 for the IDT72291.
IDT72281/72291
CMOS SuperSync FIFO™ 65,536 x 9 and 131,072 x 9
WCLK
procedure. D = 65,537 for the IDT72281 and 131,073 for the IDT72291.
SEN
Q
1
WCLK
, W
LD
RCLK
0
SI
WEN
REN
- Q
PAE
PAF
2
OR
RT
HF
, W
n
3
= first, second and third words written to the FIFO after Master Reset.
t
ENS
W
x
Figure 13. Serial Loading of Programmable Flag Registers (IDT Standard and FWFT Modes)
t
ENH
BIT 0
t
t
ENS
LDS
t
DS
t
ENS
t
RTS
t
RTS
REF
.
t
t
ENH
LDH
EMPTY OFFSET
t
t
REF
t
ENH
HF
Figure 12. Retransmit Timing (FWFT Mode)
t
SKEW2
1
2
t
PAF
1
W
x+1
BIT X
21
(1)
BIT 0
2
t
PAE
FULL OFFSET
3
t
A
COMMERCIAL AND INDUSTRIAL
t
ENH
t
REF
(5)
W
1
TEMPERATURE RANGES
(4)
BIT X
t
t
t
t
ENH
LDH
LDH
DH
(1)
W
4
t
2
A
4675 drw 15
t
ENH
4675 drw16
W
3