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参数资料
| 型号： | IDT72V291L20TF |
| 厂商： | IDT, Integrated Device Technology Inc |
| 文件页数： | 6/26页 |
| 文件大小： | 0K |
| 描述： | IC FIFO SS 32768X36 20NS 64QFP |
| 标准包装： | 80 |
| 系列： | 72V |
| 功能： | 同步 |
| 存储容量： | 1.1M（32K x 36） |
| 数据速率： | 50MHz |
| 访问时间： | 20ns |
| 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： | 64-LQFP |
| 供应商设备封装： | 64-TQFP（10x10） |
| 包装： | 托盘 |
| 其它名称： | 72V291L20TF |
14
COMMERCIAL AND INDUSTRIAL
TEMPERATURE RANGES
IDT72V281/72V291 3.3V CMOS SUPERSYNC FIFOTM
65,536 x 9 and 131,072 x 9
PROGRAMMABLE ALMOST-FULL FLAG (
PAF
PAF)
The Programmable Almost-Full flag (
PAF) will go LOW when the FIFO
reaches the almost-full condition. In IDT Standard mode, if no reads are
performed after reset (
MRS), PAF will go LOW after (D - m) words are
written to the FIFO. The
PAF will go LOW after (65,536-m) writes for the
IDT72V281 and (131,072-m) writes for the IDT72V291. The offset “m” is the
full offset value. The default setting for this value is stated in the footnote of
Table 1.
In FWFT mode, the
PAF will go LOW after (65,537-m) writes for the
IDT72V281 and (131,073-m) writes for the IDT72V291, where m is the full
offset value. The default setting for this value is stated in the footnote of
Table 2.
See Figure 18, Programmable Almost-Full Flag Timing (IDT Standard
and FWFT Mode), for the relevant timing information.
PAF is synchronous and updated on the rising edge of WCLK.
PROGRAMMABLE ALMOST-EMPTY FLAG (
PAE
PAE)
The Programmable Almost-Empty flag (
PAE) will go LOW when the
FIFO reaches the almost-empty condition. In IDT Standard mode, PAE will
go LOW when there are n words or less in the FIFO. The offset “n” is the
empty offset value. The default setting for this value is stated in the footnote
of Table 1.
In FWFT mode, the
PAE will go LOW when there are n+1 words or less in
the FIFO. The default setting for this value is stated in the footnote of Table 2.
See Figure 19, Programmable Almost-Empty Flag Timing (IDT Stan-
dard and FWFT Mode), for the relevant timing information.
PAE is synchronous and updated on the rising edge of RCLK.
HALF-FULL FLAG (
HF
HF)
This output indicates a half-full FIFO. The rising WCLK edge that fills the
FIFO beyond half-full sets
HF LOW. The flag remains LOW until the
difference between the write and read pointers becomes less than or equal
to half of the total depth of the device; the rising RCLK edge that accom-
plishes this condition sets
HF HIGH.
In IDT Standard mode, if no reads are performed after reset (
MRS or
PRS), HF will go LOW after (D/2 + 1) writes to the FIFO, where D = 65,536
for the IDT72V281 and 131,072 for the IDT72V291.
In FWFT mode, if no reads are performed after reset (
MRS or PRS),
HF will go LOW after (D-1/2 + 2) writes to the FIFO, where D = 65,537 for
the IDT72V281 and 131,073 for the IDT72V291.
See Figure 20, Half-Full Flag Timing (IDT Standard and FWFT Modes),
for the relevant timing information. Because
HF is updated by both RCLK
and WCLK, it is considered asynchronous.
DATA OUTPUTS (Q0-Q8)
(Q0 - Q8) are data outputs for 9-bit wide data.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| IDT72V291L20TF8 | 功能描述:IC FIFO SS 32768X36 20NS 64QFP RoHS:否 类别:集成电路 (IC) >> 逻辑 - FIFO 系列:72V 标准包装:15 系列:74F 功能:异步 存储容量:256（64 x 4） 数据速率:- 访问时间:- 电源电压:4.5 V ~ 5.5 V 工作温度:0°C ~ 70°C 安装类型:通孔 封装/外壳:24-DIP（0.300"，7.62mm） 供应商设备封装:24-PDIP 包装:管件 其它名称:74F433 |
| IDT72V293L10PF | 功能描述:IC FIFO 65536X18 10NS 80QFP RoHS:否 类别:集成电路 (IC) >> 逻辑 - FIFO 系列:72V 标准包装:15 系列:74F 功能:异步 存储容量:256（64 x 4） 数据速率:- 访问时间:- 电源电压:4.5 V ~ 5.5 V 工作温度:0°C ~ 70°C 安装类型:通孔 封装/外壳:24-DIP（0.300"，7.62mm） 供应商设备封装:24-PDIP 包装:管件 其它名称:74F433 |
| IDT72V293L10PF8 | 功能描述:IC FIFO 65536X18 10NS 80QFP RoHS:否 类别:集成电路 (IC) >> 逻辑 - FIFO 系列:72V 标准包装:15 系列:74F 功能:异步 存储容量:256（64 x 4） 数据速率:- 访问时间:- 电源电压:4.5 V ~ 5.5 V 工作温度:0°C ~ 70°C 安装类型:通孔 封装/外壳:24-DIP（0.300"，7.62mm） 供应商设备封装:24-PDIP 包装:管件 其它名称:74F433 |
| IDT72V293L10PFI | 功能描述:IC FIFO 65536X18 10NS 80QFP RoHS:是 类别:集成电路 (IC) >> 逻辑 - FIFO 系列:72V 标准包装:90 系列:74ABT 功能:同步，双端口 存储容量:4.6K（64 x 36 x2） 数据速率:67MHz 访问时间:- 电源电压:4.5 V ~ 5.5 V 工作温度:0°C ~ 70°C 安装类型:表面贴装 封装/外壳:120-LQFP 裸露焊盘 供应商设备封装:120-HLQFP（14x14） 包装:托盘 产品目录页面:1005 (CN2011-ZH PDF) 其它名称:296-3984 |
| IDT72V293L10PFI8 | 功能描述:IC FIFO 65536X18 10NS 80QFP RoHS:否 类别:集成电路 (IC) >> 逻辑 - FIFO 系列:72V 标准包装:15 系列:74F 功能:异步 存储容量:256（64 x 4） 数据速率:- 访问时间:- 电源电压:4.5 V ~ 5.5 V 工作温度:0°C ~ 70°C 安装类型:通孔 封装/外壳:24-DIP（0.300"，7.62mm） 供应商设备封装:24-PDIP 包装:管件 其它名称:74F433 |
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