IDT723644L12PF IDT, Integrated Device Technology Inc, IDT723644L12PF Datasheet - Page 32

• 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

NOTE:
1. If Port B is configured for word size, data can be written to the Mail1 register using A0-A17 (A18-A35 are don't care inputs). In this first case B0-B17 will have valid data (B18-B35 will be
NOTES:
1. t
2. FIFO2 write (CSB = LOW, W/RB = LOW, MBB = LOW), FIFO2 read (CSA = LOW, W/RA = LOW, MBA = LOW). Data in the FIFO2 output register has been read from the FIFO.
3. D = Maximum FIFO Depth = 256 for the IDT723624, 512 for the IDT723634, 1,024 for the IDT723644.
4. If Port B size is word or byte, AFB is set LOW by the last word or byte write of the long word, respectively.
IDT723624/723634/723644 CMOS SyncBiFIFO™ WITH BUS-MATCHING
256 x 36 x 2, 512 x 36 x 2, 1,024 x 36 x 2
A0-A35
B0-B35
indeterminate). If Port B is configured for byte size, data can be written to the Mail1 Register using A0-A8 (A9-A35 are don't care inputs). In this second case, B0-B8 will have valid data
(B9-B35 will be indeterminate).
and rising CLKA edge is less than t
MBF1
CLKA
CLKB
W/RA
W/RB
SKEW2
MBA
MBB
CSA
CSB
ENA
ENB
CLKB
CLKA
ENB
AFB
ENA
is the minimum time between a rising CLKB edge and a rising CLKA edge for AFB to transition HIGH in the next CLKB cycle. If the time between the rising CLKB edge
[D-(Y2+1)] Words in FIFO2
t
Figure 26. Timing for AFB
Figure 27. Timing for Mail1 Register and MBF1
ENS2
SKEW2
t
t
t
t
ENS1
ENS2
ENS2
ENS1
t
FIFO1 Output Register
EN
, then AFB may transition HIGH one CLKB cycle later than shown.
t
DS
t
W1
t
ENH
PAF
AFB
AFB
AFB
AFB when FIFO2 is Almost-Full (IDT Standard and FWFT Modes)
t
MDV
t
t
t
t
DH
t
ENH
ENH
ENH
ENH
t
PMF
t
ENS2
t
PMR
MBF1
MBF1
MBF1
MBF1 Flag (IDT Standard and FWFT Modes)
32
(D-Y2) Words in FIFO2
t
SKEW2
t
W1 (Remains valid in Mail1 Register after read)
ENH
(1)
1
t
ENS2
COMMERCIAL TEMPERATURE RANGE
t
ENH
t
PMF
2
t
PAF
t
DIS
3270 drw29
3270 drw28