IDT72205LB/72215LB/72225LB/72235LB/72245LB CMOS SyncFIFO™
256 x 18, 512 x 18, 1024 x 18, 2048 x 18 and 4096 x 18
MILITARY AND COMMERCIAL TEMPERATURE RANGES
DATA IN
••
••
WXO RXO
WCLK
WEN
RS
RCLK
REN
LD
OE
IDT
72205LB/
72215LB/
72225LB/
Dn 72235LB/ Qn
Vcc
72245LB
•
FL
FF
EF
PAF
PAE
WXI RXI
WXO RXO
WCLK
WEN
RS
LD
RCLK
REN
OE
IDT
72205LB/
72215LB/
Dn 72225LB/ Qn
V•cc
72235LB/
72245LB
FL
FF
EF
PAF
PAE
WXI RXI
••
•
•
DATA OUT
WRITE CLOCK
WRITE ENABLE
RESET
LOAD
FF
PAF
•
•
•
•
WXO RXO
WCLK RCLK
WEN REN
RS
OE
Dn IDT Qn
LD
72205LB/
72215LB/
72225LB/
72235LB/
72245LB
FF
EF
PAF
PAE
WXI RXI
FIRST LOAD (FL)
•
•
•
EF
PAE
READ CLOCK
READ ENABLE
OUTPUT ENABLE
2766 drw 24
Figure 22. Block Diagram of 768 x 18/1536 x 18/3072 x 18/6144 x 18/12288 x 18 Synchronous FIFO Memory
With Programmable Flags used in Depth Expansion Configuration
5.16
20