参数资料
型号: IDT72V815L15PF8
厂商: IDT, Integrated Device Technology Inc
文件页数: 13/26页
文件大小: 0K
描述: IC FIFO SYNC 512X18 15NS 128QFP
标准包装: 1,000
系列: 72V
功能: 异步,同步
存储容量: 9.2K(512 x 18)
数据速率: 67MHz
访问时间: 15ns
电源电压: 3 V ~ 3.6 V
工作温度: 0°C ~ 70°C
安装类型: 表面贴装
封装/外壳: 128-LQFP
供应商设备封装: 128-TQFP(14x20)
包装: 带卷 (TR)
其它名称: 72V815L15PF8
20
IDT72V805/72V815/72V825/72V835/72V845
3.3 V CMOS DUAL SyncFIFO 256 x 18, 512 x 18, 1,024 x 18, 4,096 x 18
COMMERCIAL AND INDUSTRIAL
TEMPERATURE RANGES
FEBRUARY 11, 2009
WCLK
tENH
WEN
PAE
RCLK
REN
4295 drw 22
tENS
tENH
tENS
n + 1 words in FIFO(2),
n + 2 words in FIFO(3)
tSKEW2
tPAES
n Words in FIFO(2),
n + 1 words in FIFO(3)
(4)
tPAES
n words in FIFO(2),
n + 1words in FIFO(3)
tCLKH
tCLKL
WCLK
tENH
WEN
PAF
RCLK
REN
4295 drw 23
tENS
tENH
tENS
D - m Words in FIFO
D -(m+1) Words
in FIFO
tSKEW2(3)
tPAFS
D-(m+1) Words in FIFO
tCLKL
tCLKH
Figure 22. Synchronous Programmable Almost-Empty Flag Timing (IDT Standard and FWFT Modes)
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 for
PAE to go HIGH during the current clock cycle. 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 RCLK only.
6. Select this mode by setting (
FL, RXI, WXI) = (1,0,0), (1,0,1), or (1,1,0) during Reset.
NOTES:
1. m =
PAF offset.
2. D = maximum FIFO Depth.
In IDT Standard Mode: D = 256 for the IDT72V805, 512 for the IDT72V815, 1,024 for the IDT72V825, 2,048 for the IDT72V835 and 4,096 for the IDT72V845. In FWFT Mode:
D = 257 for the IDT72V805, 513 for the IDT72V815, 1,025 for the IDT72V825, 2,049 for the IDT72V835 and 4,097 for the IDT72V845.
3. tSKEW2 is the minimum time between a rising RCLK edge and a rising WCLK edge for
PAF to go HIGH during the current clock cycle. If the time between the rising edge of RCLK and
the rising edge of WCLK is less than tSKEW2, then the
PAF deassertion time may be delayed an extra WCLK cycle.
4.
PAF is asserted and updated on the rising edge of WCLK only.
5. Select this mode by setting (
FL, RXI, WXI) = (1,0,0), (1,0,1), or (1,1,0) during Reset.
Figure 23. Synchronous Programmable Almost-Full Flag Timing (IDT Standard and FWFT Modes)
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