IDT72801/728211/72821/72831/72841/72851 DUAL CMOS SyncFIFOTM DUAL 256 x 9, DUAL 512 x 9, DUAL 1K x 9" />
參數(shù)資料
型號: IDT72821L15PFI
廠商: IDT, Integrated Device Technology Inc
文件頁數(shù): 4/16頁
文件大?。?/td> 0K
描述: IC FIFO SYNC 1KX9 15NS 64QFP
標(biāo)準(zhǔn)包裝: 90
系列: 7200
功能: 同步
存儲容量: 9K(1K x 9)
數(shù)據(jù)速率: 67MHz
訪問時間: 15ns
電源電壓: 4.5 V ~ 5.5 V
工作溫度: -40°C ~ 85°C
安裝類型: 表面貼裝
封裝/外殼: 64-LQFP
供應(yīng)商設(shè)備封裝: 64-TQFP(14x14)
包裝: 托盤
其它名稱: 72821L15PFI
12
IDT72801/728211/72821/72831/72841/72851 DUAL CMOS SyncFIFOTM
DUAL 256 x 9, DUAL 512 x 9, DUAL 1K x 9, DUAL 2K x 9, DUAL 4K x 9, DUAL 8K x 9
COMMERCIAL AND INDUSTRIAL
TEMPERATURERANGES
MARCH 2013
Figure 10. Programmable Full Flag Timing
NOTES:
1. m = PAF offset.
2. (256-m) words for the IDT72801; (512-m) words the IDT72811; (1,024-m) words for the IDT72821; (2,048-m) words for the IDT72831; (4,096-m) words for the IDT72841; or (8,192-m)
words for the IDT72851.
3. tSKEW2 is the minimum time between a rising RCLKA (RCLKB) edge and a rising WCLKA (WCLKB) edge for PAFA (PAFB) to change during that clock cycle. If the time between the
rising edge of RCLKA (RCLKB) and the rising edge of WCLKA (WCLKB) is less than tSKEW2, then PAFA (PAFB) may not change state until the next WCLKA (WCLKB) rising edge.
4. If a write is performed on this rising edge of the write clock, there will be Full - (m-1) words in FIFO A (B) when PAFA (PAFB) goes LOW.
tENS
tENH
tENS
tENH
tENS
tENH
WCLKA
(WCLKB)
WENA1
(
WENB1)
WENA2 (WENB2)
(If Applicable)
PAFA
(
PAFB)
RCLKA (RCLKB)
RENA1, RENA2
(
RENB1, RENB2)
(4)
(1)
tPAF
Full - (m+1) words in FIFO
Full - m words in FIFO
(2)
tCLKH
tCLKL
tSKEW2
(3)
tPAF
3034 drw 11
WCLKA (WCLKB)
WENA1
(
WENB1)
WENA2 (WENB2)
(If Applicable)
PAEA,
PAEB
RCLKA (RCLKB)
RENA1, RENA2
(
RENB1, RENB2)
tENS
tENH
tENS
tENH
tSKEW2
(2)
tENS
tENH
tPAE
(3)
(1)
n words in FIFO
n+1 words in FIFO
tCLKH
tCLKL
3034 drw 12
NOTES:
1. n = PAE offset.
2. tSKEW2 is the minimum time between a rising WCLKA (WCLKB) edge and a rising RCLKA (RCLKB) edge for PAEA (PAEB) to change during that clock cycle. If the time between the
rising edge of WCLKA (WCLKB) and the rising edge of RCLKA (RCLKB) is less than tSKEW2, then PAEA (PAEB) may not change state until the next RCLKA (RCLKB) rising edge.
3. If a read is performed on this rising edge of the read clock, there will be Empty + (n-1) words in FIFO A (B) when PAEA (PAEB) goes LOW.
Figure 11. Programmable Empty Flag Timing
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