72T7285L4-4BB IDT, Integrated Device Technology Inc, 72T7285L4-4BB Datasheet - Page 34

• Manufacturer Part Number: 72T7285L4-4BB
• Manufacturer: IDT, Integrated Device Technology Inc

Specifications of 72T7285L4-4BB

• Configuration: Dual
• Density: 1.125Mb
• Access Time (max): 3.4ns
• Word Size: 72b
• Organization: 16Kx72
• Sync/async: Synchronous
• Expandable: Yes
• Bus Direction: Uni-Directional
• Package Type: BGA
• Clock Freq (max): 225MHz
• Operating Supply Voltage (typ): 2.5V
• Operating Supply Voltage (min): 2.375V
• Operating Supply Voltage (max): 2.625V
• Supply Current: 130mA
• Operating Temp Range: 0C to 70C
• Operating Temperature Classification: Commercial
• Mounting: Surface Mount
• Pin Count: 324
• Lead Free Status / Rohs Status: Not Compliant

NOTES:
1. t
2. LD = HIGH, OE = LOW, EF = HIGH.
3. WCS = LOW.
NOTES:
1. t
2. LD = HIGH.
3. First data word latency = t
4. RCS is LOW.
Q
D
Q0 - Qn
D0 - Dn
IDT72T7285/72T7295/72T72105/72T72115 2.5V TeraSync™ ™ ™ ™ ™ 72-BIT FIFO
16,384 x 72, 32,768 x 72, 65,536 x 72, 131,072 x 72
WCLK
0
0
WCLK
WCS
RCLK
RCLK
rising edge of the RCLK and the rising edge of the WCLK is less than t
rising edge of WCLK and the rising edge of RCLK is less than t
WEN
SKEW1
WEN
SKEW1
RCS
REN
- D
- Q
REN
FF
EF
OE
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
t
ENS
t
t
ENS
ENS
Figure 12. Read Cycle, Output Enable, Empty Flag and First Data Word Latency (IDT Standard Mode)
t
RCSLZ
t
SKEW1
t
t
OLZ
ENH
SKEW1
t
REF
t
A
(1)
t
OE
+ 1*T
t
WCSS
t
ENH
t
SKEW1
t
RCLK
ENS
t
A
t
DS
1
D
(1)
+ t
NO WRITE
Figure 11. Write Cycle and Full Flag Timing (IDT Standard Mode)
0
REF.
NO OPERATION
t
t
DH
ENH
LAST WORD
1
2
t
WFF
SKEW1
t
DS
t
, then EF deassertion may be delayed one extra RCLK cycle.
t
OHZ
t
CLKH
t
SKEW1
DS
ENS
D
, then the FF deassertion may be delayed one extra WCLK cycle.
D
X
1
t
NO OPERATION
WFF
DATA READ
t
34
t
t
ENH
DH
t
WCSH
DH
t
CLK
2
t
CLKL
t
t
CLKH
ENS
t
REF
t
OLZ
t
SKEW1
t
CLK
(1)
t
CLKL
t
t
ENS
ENH
LAST WORD
t
A
1
NO WRITE
t
ENH
COMMERCIAL AND INDUSTRIAL
t
A
2
TEMPERATURE RANGES
NEXT DATA READ
WFF
REF
t
t
ENS
WFF
t
DS
). If the time between the
). If the time between the
D
0
D
X+1
t
REF
t
t
ENH
A
5994 drw16
t
DH
t
5994 drw17
WFF
D
1