参数资料
型号: IDT72251L15JI
厂商: IDT, Integrated Device Technology Inc
文件页数: 12/14页
文件大小: 0K
描述: IC FIFO SYNC 512X9 15NS 32PLCC
标准包装: 32
系列: 7200
功能: 同步
存储容量: 72K(8K x 9)
访问时间: 15ns
电源电压: 4.5 V ~ 5.5 V
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 32-LCC(J 形引线)
供应商设备封装: 32-PLCC(13.97x11.43)
包装: 管件
其它名称: 72251L15JI
7
COMMERCIALANDINDUSTRIAL
TEMPERATURERANGES
IDT72421/72201/72211/72221/72231/72241/72251 CMOS SyncFIFO
64 x 9, 256 x 9, 512 x 9, 1,024 x 9, 2,048 x 9, 4,096 x 9 and 8,192 x 9
OUTPUTS:
FULL FLAG (FF)
TheFullFlag(FF)willgoLOW,inhibitingfurtherwriteoperation,whenthe
device is full. If no reads are performed after Reset (RS), the Full Flag (FF)
willgoLOWafter64writesfortheIDT72421,256writesfortheIDT72201,512
writes for the IDT72211, 1,024 writes for the IDT72221, 2,048 writes for the
IDT72231,4,096writesfortheIDT72241,and8,192writesfortheIDT72251.
The Full Flag (FF) is synchronized with respect to the LOW-to-HIGH
transitionoftheWriteClock(WCLK).
EMPTY FLAG (EF)
TheEmptyFlag(EF)willgoLOW,inhibitingfurtherreadoperations,when
the read pointer is equal to the write pointer, indicating the device is empty.
The Empty Flag (EF) is synchronized with respect to the LOW-to-HIGH
transition of the Read Clock (RCLK).
PROGRAMMABLE ALMOST-FULL FLAG (PAF)
The Programmable Almost-Full flag (PAF) will go LOW when the FIFO
reachesthealmost-fullcondition.IfnoreadsareperformedafterReset(RS),
theProgrammableAlmost-Fullflag(PAF)willgoLOWafter(64-m)writesforthe
IDT72421,(256-m)writesfortheIDT72201,(512-m)writesfortheIDT72211,
TABLE 1 — STATUS FLAGS
NUMBER OF WORDS IN FIFO
IDT72421
IDT72201
IDT72211
FF
PAF
PAE
EF
00
0
H
L
1 to n
H
L
H
(n+1)to(64-(m+1))
(n+1)to(256-(m+1))
(n+1)to(512-(m+1))
H
(64-m)(2) to63
(256-m)(2) to255
(512-m)(2) to511
H
L
H
64
256
512
L
H
NUMBER OF WORDS IN FIFO
IDT72221
IDT72231
IDT72241
IDT72251
FF
PAF
PAE
EF
00
0
H
L
1 to n(1)
HH
L
H
(n+1)to(1,024-(m+1))
(n+1)to(2,048-(m+1))
(n+1)to(4,096-(m+1))
(n+1)to(8,192-(m+1))
H
(1,024-m)(2) to1,023
(2,048-m)(2) to2,047
(4,096-m)(2) to4,095
(8,192-m)(2) to8,191
H
L
H
1,024
2,048
4,096
8,192
L
H
NOTES:
1. n = Empty Offset (n = 7 default value)
2. m = Full Offset (m = 7 default value)
(1,024-m)writesfortheIDT72221,(2,048-m)writesfortheIDT72231,(4,096-
m)writesfortheIDT72241,and(8,192-m)writesfortheIDT72251. Theoffset
“m”isdefinedintheFulloffsetregisters.
IfthereisnoFulloffsetspecified,theProgrammableAlmost-Fullflag(PAF)
will go LOW at Full-7 words.
TheProgrammableAlmost-Fullflag(PAF)issynchronizedwithrespectto
theLOW-to-HIGHtransitionoftheWriteClock(WCLK).
PROGRAMMABLEALMOST-EMPTYFLAG(PAE)
TheProgrammableAlmost-Emptyflag(PAE)willgoLOWwhentheread
pointer is "n+1" locations less than the write pointer. The offset "n" is defined
in the Empty Offset registers. If no reads are performed after Reset the
Programmable Almost-Empty flag (PAE) will go HIGH after "n+1" for the
IDT72421/72201/72211/72221/72231/72241/72251.
IfthereisnoEmptyoffsetspecified,theProgrammableAlmost-Emptyflag
(PAE) will go LOW at Empty+7 words.
TheProgrammableAlmost-Emptyflag(PAE)issynchronizedwithrespect
to the LOW-to-HIGH transition of the Read Clock (RCLK).
DATA OUTPUTS (Q0 - Q8)
Data outputs for a 9-bit wide data.
(1)
相关PDF资料
PDF描述
IDT72265LA15PFI IC FIFO 8KX18 LP 15NS 64QFP
IDT72271LA15PFI IC FIFO 16384X18 LP 15NS 64QFP
IDT72285L20TFI IC FIFO 65536X18 LP 20NS 64STQFP
IDT72291L20TFI IC FIFO 65536X18 LP 20NS 64QFP
IDT723616L15PFG IC FIFO 64X36X2 15NS 128TQFP
相关代理商/技术参数
参数描述
IDT72251L15JI8 功能描述:IC FIFO SYNC 512X9 15NS 32PLCC RoHS:否 类别:集成电路 (IC) >> 逻辑 - FIFO 系列:7200 标准包装:90 系列:7200 功能:同步 存储容量:288K(16K x 18) 数据速率:100MHz 访问时间:10ns 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:72271LA10PF
IDT72251L15PF 功能描述:IC FIFO SYNC 512X9 15NS 32QFP RoHS:否 类别:集成电路 (IC) >> 逻辑 - FIFO 系列:7200 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
IDT72251L15PF8 功能描述:IC FIFO SYNC 512X9 15NS 32QFP RoHS:否 类别:集成电路 (IC) >> 逻辑 - FIFO 系列:7200 标准包装:80 系列:7200 功能:同步 存储容量:18.4K(1K x 18) 数据速率:- 访问时间:10ns 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(10x10) 包装:托盘 其它名称:72225LB10TF
IDT72251L15PFGI 功能描述:IC FIFO SYNC 512X9 15NS 32QFP RoHS:是 类别:集成电路 (IC) >> 逻辑 - FIFO 系列:7200 标准包装:90 系列:7200 功能:同步 存储容量:288K(16K x 18) 数据速率:100MHz 访问时间:10ns 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:72271LA10PF
IDT72251L15PFGI8 功能描述:IC FIFO SYNC 512X9 15NS 32QFP RoHS:是 类别:集成电路 (IC) >> 逻辑 - FIFO 系列:7200 标准包装:80 系列:7200 功能:同步 存储容量:18.4K(1K x 18) 数据速率:- 访问时间:10ns 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(10x10) 包装:托盘 其它名称:72225LB10TF