IDT72261LA20PF IDT, Integrated Device Technology Inc, IDT72261LA20PF Datasheet - Page 21

• Manufacturer Part Number: IDT72261LA20PF
• Description: IC FIFO 8192X18 LP 20NS 64QFP
• Manufacturer: IDT, Integrated Device Technology Inc
• Series: 7200r

Specifications of IDT72261LA20PF

• Function: Synchronous
• Memory Size: 144K (8K x 18)
• Data Rate: 50MHz
• Access Time: 20ns
• Voltage - Supply: 4.5 V ~ 5.5 V
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 64-TQFP, 64-VQFP
• Configuration: Dual
• Density: 144Kb
• Access Time (max): 12ns
• Word Size: 9b
• Organization: 16Kx9
• Sync/async: Synchronous
• Expandable: Yes
• Bus Direction: Uni-Directional
• Package Type: TQFP
• Clock Freq (max): 50MHz
• Operating Supply Voltage (typ): 5V
• Operating Supply Voltage (min): 4.5V
• Operating Supply Voltage (max): 5.5V
• Supply Current: 75mA
• 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
• Other names: 72261LA20PF

Q
NOTE:
1. X = 13 for the IDT72261LA and X = 14 for the IDT72271LA.
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
IDT72261LA/72271LA SuperSync FIFO™
16,384 x 9 and 32,768 x 9
WCLK
RCLK
0
procedure. D = 16,385 for the IDT72261LA and 32,769 for the IDT72271LA.
WEN
SEN
REN
PAE
- Q
PAF
LD
OR
1
HF
RT
, W
SI
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
t
ENS
LDS
DS
t
ENS
t
RTS
t
RTS
REF
.
t
t
LDH
ENH
EMPTY OFFSET
t
t
REF
t
ENH
HF
t
SKEW4
Figure 12. Retransmit Timing (FWFT Mode)
1
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
t
t
t
LDH
LDH
t
ENH
DH
JANUARY 7, 2009
(1)
W
4
2
t
A
4671 drw 16
t
ENH
4671 drw15
W
3