IDT723644L12PF IDT, Integrated Device Technology Inc, IDT723644L12PF Datasheet - Page 25

• Manufacturer Part Number: IDT723644L12PF
• Description: IC FIFO SYNC 2048X36 128QFP
• Manufacturer: IDT, Integrated Device Technology Inc
• Series: 7200r

Specifications of IDT723644L12PF

• Function: Synchronous
• Memory Size: 72K (2K x 36)
• Data Rate: 83MHz
• Access Time: 12ns
• Voltage - Supply: 4.5 V ~ 5.5 V
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 128-TQFP, 128-VQFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: 723644L12PF

NOTES:
1. t
2. If Port B size is word or byte, t
B0-B35
A0-A35
IDT723624/723634/723644 CMOS SyncBiFIFO™ WITH BUS-MATCHING
256 x 36 x 2, 512 x 36 x 2, 1,024 x 36 x 2
W/RA
CLKB
W/RB
CLKA
MBB
ORA
MBA
CSA
ENA
CSB
ENB
If the time between the CLKB edge and the rising CLKA edge is less than t
cycle later than shown.
SKEW1
IRB
is the minimum time between a rising CLKB edge and a rising CLKA edge for ORA to transition HIGH and to clock the next word to the FIFO2 output register in three CLKA cycles.
FIFO2 Empty
LOW
LOW
HIGH
LOW
LOW
LOW
Figure 17. ORA Flag Timing and First Data Word Fall through when FIFO2 is Empty (FWFT Mode)
t
t
ENS2
ENS2
t
DS
SKEW1
W1
is referenced to the rising CLKB edge that writes the last word or byte of the long word, respectively.
Old Data in FIFO2 Output Register
t
SKEW1
t
t
t
DH
ENH
ENH
(1)
t
CLKH
1
t
CLK
t
SKEW1
CLKL
t
, then the transition of ORA HIGH and load of the first word to the output register may occur one CLKA
CLKH
25
2
t
CLK
t
REF
3
t
A
t
CLKL
t
ENS2
COMMERCIAL TEMPERATURE RANGE
t
REF
t
ENH
W1
3270 drw19