参数资料
型号: IDT723646L12PF
厂商: IDT, Integrated Device Technology Inc
文件页数: 26/35页
文件大小: 0K
描述: IC FIFO SYNC 2048X36 128QFP
标准包装: 72
系列: 7200
功能: 同步
存储容量: 72K(2K x 36)
数据速率: 83MHz
访问时间: 12ns
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: 128-LQFP
供应商设备封装: 128-TQFP(14x20)
包装: 托盘
其它名称: 723646L12PF
32
COMMERCIAL TEMPERATURE RANGE
IDT723626/723636/723646 CMOS TRIPLE BUS SyncFIFO
WITH BUS-MATCHING 256 x 36 x 2, 512 x 36 x 2 and 1,024 x 36 x 2
NOTES:
1. tSKEW2 is the minimum time between a rising CLKC edge and a rising CLKA edge for
AFC to transition HIGH in the next CLKC cycle. If the time between the rising CLKC edge
and rising CLKA edge is less than tSKEW2, then
AFC may transition HIGH one CLKC cycle later than shown.
2. FIFO2 write (MBC = LOW), FIFO2 read (
CSA = LOW, W/RA = LOW, MBA = LOW). Data in the FIFO2 output register has been read from the FIFO.
3. D = Maximum FIFO Depth = 256 for the IDT723626, 512 for the IDT723636, 1,024 for the IDT723646.
4. Port C size is word or byte,
AFC is set LOW by the last word or byte write of the long word, respectively.
Figure 27. Timing for
AFC
AFC when FIFO2 is Almost-Full (IDT Standard and FWFT Modes)
Figure 25. Timing for
AEA
AEA when FIFO2 is Almost-Empty (IDT Standard and FWFT Modes)
Figure 26. Timing for
AFA
AFA when FIFO1 is Almost-Full (IDT Standard and FWFT Modes)
NOTES:
1. tSKEW2 is the minimum time between a rising CLKC edge and a rising CLKA edge for
AEA to transition HIGH in the next CLKA cycle. If the time between the rising CLKC edge
and rising CLKA edge is less than tSKEW2, then
AEA may transition HIGH one CLKA cycle later than shown.
2. FIFO2 Write (MBC = LOW), FIFO2 read (
CSA = LOW, W/RA = LOW, MBA = LOW). Data in the FIFO2 output register has been read from the FIFO.
3. If Port C size is word or byte, tSKEW2 is referenced to the rising CLKC edge that writes the last word or byte of the long word, respectively.
NOTES:
1. tSKEW2 is the minimum time between a rising CLKA edge and a rising CLKB edge for
AFA to transition HIGH in the next CLKA cycle. If the time between the rising CLKA edge
and rising CLKB edge is less than tSKEW2, then
AFA may transition HIGH one CLKA cycle later than shown.
2. FIFO1 Write (
CSA = LOW, W/RA = HIGH, MBA = LOW), FIFO1 read (CSB = LOW, MBB = LOW). Data in the FIFO1 output register has been read from the FIFO.
3. D = Maximum FIFO Depth = 256 for the IDT723626, 512 for the IDT723636, 1,024 for the IDT723646.
4. If Port B size is word or byte, tSKEW2 is referenced from the rising CLKB edge that reads the last word or byte of the long word, respectively.
AEA
CLKC
ENA
3271 drw26
WENC
CLKA
2
1
tENS2
tENH
tSKEW2
tPAE
tENS2
tENH
(X2+1) Words in FIFO2
X2 Words in FIFO2
(1)
tENS2
AFA
CLKA
RENB
3271 drw27
ENA
CLKB
12
tSKEW2
tENS2
tENH
tPAF
tENS2
tENH
tPAF
[D-(Y1+1)] Words in FIFO1
(D-Y1) Words in FIFO1
(1)
AFC
CLKC
ENA
3271 drw28
WENC
CLKA
12
tSKEW2
tENS2
tENH
tPAF
tENS2
tENH
tPAF
[D-(Y2+1)] Words in FIFO2
(D-Y2) Words in FIFO2
(1)
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IDT723646L15PF8 功能描述:IC FIFO SYNC 2048X36 128QFP 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
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