參數(shù)資料
型號: 72205LB25TFI
廠商: INTEGRATED DEVICE TECHNOLOGY INC
元件分類: FIFO
英文描述: 256 X 18 OTHER FIFO, 15 ns, PQFP64
封裝: PLASTIC, STQFP-64
文件頁數(shù): 4/16頁
文件大?。?/td> 181K
代理商: 72205LB25TFI
12
IDT72205LB/72215LB/72225LB/72235LB/72245LB CMOS SyncFIFO
256 x 18, 512 x 18, 1,024 x 18, 2,048 x 18 and 4,096 x 18
Commercial And Industrial Temperature Ranges
WCLK
tCLKH
tCLKL
tENS
tENH
tENS
tPAE
n + 1 words in FIFO
n words in FIFO
RCLK
tPAE
2766 drw 14
NOTE:
1. n =
PAE offset. Number of data words written into FIFO already = n.
Figure 12. Programmable Almost-Empty Flag Timing
WCLK
tCLKH
tCLKL
tENS
tENH
tENS
tPAF
D – m + 1 words
in FIFO memory
RCLK
tPAF
(1)
2766 drw 15
D – m words
in FIFO memory
(2)
(1)
D – m + 1 words in FIFO memory (1)
NOTES:
1. m =
PAF offset. D = maximum FIFO Depth. Number of data words written into FIFO memory = 256 - m + 1 for the IDT72205, 512 -m + 1 for the IDT72215,
1,024-m+1 for the IDT72225, 2,048-m+1 for the IDT72235 and 4,096-m+1 for the IDT72245.
2. 256 - m words in IDT72205, 512 - m words in IDT72215, 1,024 - m words in IDT72225, 2,048 - m words in IDT72235 and 4,096 - m words in IDT72245.
Figure 13. Programmable Almost-Full Flag Timing
WCLK
tENS
tENH
tENS
tHF
RCLK
tHF
D/2 words in
FIFO memory(1)
2766 drw 16
D/2 + 1 words in
FIFO memory(2)
D/2 words in FIFO memory
(1)
tCLKL
tCLKH
NOTE:
1. D = maximum FIFO Depth = 256 words for the IDT72205, 512 words for the IDT72215, 1,024 words for the IDT72225, 2,048 words for the IDT72235 and
4,096 words for the IDT72245.
Figure 14. Half-Full Flag Timing
相關(guān)PDF資料
PDF描述
72215LB10TFG8 512 X 18 OTHER FIFO, 6.5 ns, PQFP64
72215LB15J8 512 X 18 OTHER FIFO, 10 ns, PQCC68
IDT72235LB25TF CMOS SyncFIFOO 256 x 18, 512 x 18, 1024 x 18, 2048 x 18 and 4096 x 18
IDT72235LB25TFI CMOS SyncFIFOO 256 x 18, 512 x 18, 1024 x 18, 2048 x 18 and 4096 x 18
IDT72235LB25TFB CMOS SyncFIFOO 256 x 18, 512 x 18, 1024 x 18, 2048 x 18 and 4096 x 18
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