參數(shù)資料
型號(hào): IDT72285L15PF
廠(chǎng)商: IDT, Integrated Device Technology Inc
文件頁(yè)數(shù): 15/25頁(yè)
文件大?。?/td> 0K
描述: IC FIFO 65536X18 LP 15NS 64-TQFP
標(biāo)準(zhǔn)包裝: 90
系列: 7200
功能: 同步
存儲(chǔ)容量: 1.1M(65K x 18)
訪(fǎng)問(wèn)時(shí)間: 15ns
電源電壓: 4.5 V ~ 5.5 V
工作溫度: 0°C ~ 70°C
安裝類(lèi)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(pán)
其它名稱(chēng): 72285L15PF
COMMERCIALANDINDUSTRIAL
TEMPERATURERANGES
IDT72275/72285
CMOS SuperSync FIFO 32,768 x 18 and 65,536 x 18
22
NOTES:
1. For IDT Standard mode: D = maximum FIFO depth. D = 32,768 for the IDT72275 and 65,536 for the IDT72285.
2. For FWFT mode: D = maximum FIFO depth. D = 32,769 for the IDT72275 and 65,537 for the IDT72285.
NOTES:
1. n = PAE offset.
2. For IDT Standard mode
3. For FWFT mode.
4. tSKEW2 is the minimum time between a rising WCLK edge and a rising RCLK edge to guarantee that PAE will go HIGH (after one RCLK cycle plus tPAE). If the time
between the rising edge of WCLK and the rising edge of RCLK is less than tSKEW2, then the PAE deassertion may be delayed one extra RCLK cycle.
5. PAE is asserted and updated on the rising edge of WCLK only.
Figure 18. Half-Full Flag Timing (IDT Standard and FWFT Modes)
WCLK
t ENH
t CLKH
tCLKL
WEN
PAE
RCLK
t ENS
tPAE
tSKEW2
tPAE
12
(4)
REN
4674 drw 20
t ENS
t ENH
n+1 words in FIFO (2),
n+2 words in FIFO (3)
n words in FIFO (2),
n+1 words in FIFO (3)
n words in FIFO (2),
n+1 words in FIFO (3)
WCLK
tENS
tENH
WEN
HF
tENS
RCLK
REN
4674 drw 21
D/2 words in FIFO(1),
[
+ 1
] words in FIFO(2)
D-1
2
D/2 + 1 words in FIFO
(1),
[
+ 2
] words in FIFO(2)
D-1
2
D/2 words in FIFO(1),
[
+ 1
] words in FIFO(2)
D-1
2
tCLKH
tCLKL
tHF
Figure 17. Programmable Almost-Empty Flag Timing (IDT Standard and FWFT Modes)
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