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72215

更新时间： 2023-12-20 18:44:26

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72215 数据手册

IDT72205LB/72215LB/72225LB/72235LB/72245LBCMOSSyncFIFO^TM

256 x 18, 512 x 18, 1,024 x 18, 2,048 x 18 and 4,096 x 18

COMMERCIALANDINDUSTRIAL

TEMPERATURERANGES

Afterhalfofthememoryisfilled,andattheLOW-to-HIGHtransitionofthenext READ EXPANSION OUT (RXO)

writecycle,theHalf-FullFlaggoesLOWandwillremainsetuntilthedifference

In the Daisy Chain Depth Expansion configuration, Read Expansion In

betweenthewritepointerandreadpointerislessthanorequaltoonehalfof (RXI)isconnectedtoReadExpansionOut(RXO)ofthepreviousdevice.This

thetotalmemoryofthedevice. TheHalf-FullFlag(HF)isthenresettoHIGH outputactsasasignaltothenextdeviceintheDaisyChainbyprovidingapulse

by the LOW-to-HIGH transition of the Read Clock (RCLK). The HF is whenthepreviousdevicereadsfromthelastlocationofmemory.

asynchronous.

IntheDaisyChainDepthExpansion mode, WXIisconnectedtoWXOof DATAOUTPUTS(Q0-Q17)

thepreviousdevice. ThisoutputactsasasignaltothenextdeviceintheDaisy

Chainbyprovidingapulsewhenthepreviousdevicewritestothelastlocation

ofmemory.

Q0-Q17 aredataoutputsfor18-bitwidedata.

t_RS

RSR

tRSS

RSF

(1)

= 1

Q0 - Q17

2766 drw 06

= 0

NOTES:

1. After reset, the outputs will be LOW if OE = 0 and tri-state if OE = 1.

2. The clocks (RCLK, WCLK) can be free-running during reset.

Figure 4. Reset Timing⁽²⁾

MARCH 2013

1...5 6 789 10 11...17

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型号	品牌	获取价格	描述	数据表
72215-59	MOLEX	获取价格	Barrier Strip Terminal Block
72215-C	MOLEX	获取价格	Barrier Strip Terminal Block, 25A, 1 Row(s), 1 Deck(s)
72215LB10J	IDT	获取价格	PLCC-68, Tube
72215LB10JG	IDT	获取价格	FIFO, 512X18, 6.5ns, Synchronous, CMOS, PQCC68, GREEN, PLASTIC, LCC-68
72215LB10JG8	IDT	获取价格	CMOS SyncFIFO
72215LB10JGI	IDT	获取价格	CMOS SyncFIFO
72215LB10JGI8	IDT	获取价格	CMOS SyncFIFO
72215LB10PF9	IDT	获取价格	FIFO, 512X18, 6.5ns, Synchronous, CMOS, PQFP64, PLASTIC, TQFP-64
72215LB10PFG	IDT	获取价格	CMOS SyncFIFO
72215LB10PFG8	IDT	获取价格	CMOS SyncFIFO