参数资料
型号: IDT72285L20PF
厂商: IDT, Integrated Device Technology Inc
文件页数: 5/25页
文件大小: 0K
描述: IC FIFO 65536X18 LP 20NS 64-TQFP
标准包装: 90
系列: 7200
功能: 同步
存储容量: 1.1M(65K x 18)
访问时间: 20ns
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: 64-LQFP
供应商设备封装: 64-TQFP(14x14)
包装: 托盘
其它名称: 72285L20PF
800-2328
IDT72285L20PF-ND
13
COMMERCIALANDINDUSTRIAL
TEMPERATURERANGES
IDT72275/72285
CMOS SuperSync FIFO 32,768 x 18 and 65,536 x 18
(65,536-m)writesfortheIDT72285.Theoffset“m”isthefulloffsetvalue.The
defaultsettingforthisvalueisstatedinthefootnoteofTable1.
InFWFTmode,thePAFwillgoLOWafter(32,769-m)writesfortheIDT72275
and (65,537-m) writes for the IDT72285, where m is the full offset value. The
defaultsettingforthisvalueisstatedinthefootnoteofTable2.
SeeFigure16,ProgrammableAlmost-FullFlagTiming(IDTStandardand
FWFTMode),fortherelevanttiminginformation.
PAF is synchronous and updated on the rising edge of WCLK.
PROGRAMMABLEALMOST-EMPTYFLAG(PAE)
The Programmable Almost-Empty flag (PAE) will go LOW when the FIFO
reachesthealmost-emptycondition.InIDTStandardmode,PAEwillgoLOW
whentherearenwordsorless 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 17, Programmable Almost-Empty Flag Timing (IDT Standard
and FWFT Mode), for the relevant timing information.
PAE is synchronous and updated on the rising edge of RCLK.
HALF-FULL FLAG (HF)
Thisoutputindicatesahalf-fullFIFO.TherisingWCLKedgethatfillstheFIFO
beyondhalf-fullsetsHFLOW.TheflagremainsLOWuntilthedifferencebetween
thewriteandreadpointersbecomeslessthanorequaltohalfofthetotaldepth
of the device; the rising RCLK edge that accomplishes this condition sets HF
HIGH.
InIDTStandardmode,ifnoreadsareperformedafterreset(MRSorPRS),
HF will go LOW after ((D/2) + 1) writes to the FIFO, where D = 32,768 for the
IDT72275 and 65,536 for the IDT72285.
InFWFTmode,ifnoreadsareperformedafterreset(MRSorPRS),HFwill
go LOW after ((D-1)/2 + 2) writes to the FIFO, where D = 32,769 for the
IDT72275 and 65,537 for the IDT72285.
See Figure 18, Half-Full Flag Timing (IDT Standard and FWFT Modes),
fortherelevanttiminginformation.BecauseHFisupdatedbybothRCLKand
WCLK,itisconsideredasynchronous.
DATAOUTPUTS(Q0-Q17)
(Q0 - Q17) are data outputs for 18-bit wide data.
相关PDF资料
PDF描述
MS3101R24-11S CONN RCPT 9POS PANEL MNT W/SCKT
VI-B7J-MY CONVERTER MOD DC/DC 36V 50W
IDT72V283L10PFI IC FIFO 32768X18 10NS 80QFP
LTC1605CG#TRPBF IC A/D CONV 16BIT SAMPLNG 28SSOP
VI-26K-CU-F3 CONVERTER MOD DC/DC 40V 200W
相关代理商/技术参数
参数描述
IDT72285L20PF8 功能描述:IC FIFO 65536X18 LP 20NS 64-TQFP RoHS:否 类别:集成电路 (IC) >> 逻辑 - FIFO 系列:7200 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
IDT72285L20PFI 功能描述:IC FIFO 65536X18 LP 20NS 64-TQFP RoHS:否 类别:集成电路 (IC) >> 逻辑 - FIFO 系列:7200 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
IDT72285L20PFI8 功能描述:IC FIFO 65536X18 LP 20NS 64-TQFP RoHS:否 类别:集成电路 (IC) >> 逻辑 - FIFO 系列:7200 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
IDT72285L20TF 功能描述:IC FIFO 65536X18 LP 20NS 64STQFP RoHS:否 类别:集成电路 (IC) >> 逻辑 - FIFO 系列:7200 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
IDT72285L20TF8 功能描述:IC FIFO 65536X18 LP 20NS 64STQFP RoHS:否 类别:集成电路 (IC) >> 逻辑 - FIFO 系列:7200 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