IDT72255LA20TF IDT, Integrated Device Technology Inc, IDT72255LA20TF Datasheet - Page 21

• Manufacturer Part Number: IDT72255LA20TF
• Description: IC FIFO 8KX18 LP 20NS 64QFP
• Manufacturer: IDT, Integrated Device Technology Inc
• Series: 7200r

Specifications of IDT72255LA20TF

• Function: Synchronous
• Memory Size: 144K (8K x 18)
• Access Time: 20ns
• Voltage - Supply: 4 V ~ 5.5 V
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 64-STQFP
• Configuration: Dual
• Density: 144Kb
• Access Time (max): 12ns
• Word Size: 18b
• Organization: 8Kx18
• Sync/async: Synchronous
• Expandable: Yes
• Bus Direction: Uni-Directional
• Package Type: STQFP
• Clock Freq (max): 50MHz
• Operating Supply Voltage (typ): 5V
• Operating Supply Voltage (min): 4V
• Operating Supply Voltage (max): 5.5V
• Supply Current: 80mA
• Operating Temp Range: 0C to 70C
• Operating Temperature Classification: Commercial
• Mounting: Surface Mount
• Pin Count: 64
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Data Rate: -
• Lead Free Status / Rohs Status: Not Compliant
• Other names: 72255LA20TF

Q
IDT72255LA/72265LA CMOS SuperSync FIFO™
8,192 x 18 and 16,384 x 18
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
WCLK
NOTE:
1. X = 12 for the IDT72255LA and X = 13 for the IDT72265LA.
WCLK
RCLK
0
WEN
procedure. D = 8,193 for the IDT72255LA and 16,385 for the IDT72265LA.
REN
PAE
- Q
PAF
OR
1
HF
SI
RT
, W
n
2
, W
t
ENS
3
= first, second and third words written to the FIFO after Master Reset.
W
x
Figure 13. Serial Loading of Programmable Flag Registers (IDT Standard and FWFT Modes)
t
ENH
BIT 0
t
t
ENS
t
LDS
DS
t
ENS
t
RTS
t
RTS
REF
t
t
LDH
ENH
.
EMPTY OFFSET
t
t
REF
t
ENH
HF
t
SKEW4
1
Figure 12. Retransmit Timing (FWFT Mode)
2
t
PAF
1
W
x+1
BIT X
21
(1)
BIT 0
2
t
PAE
FULL OFFSET
COMMERCIAL AND INDUSTRIAL
3
t
A
t
ENH
t
REF
TEMPERATURE RANGES
(5)
W
1
(4)
BIT X
JANUARY 13, 2009
t
t
LDH
ENH
t
DH
(1)
W
4
2
t
A
4670 drw 16
t
ENH
4670 drw15
W
3