参数资料
型号: IDT7009L20PFI
厂商: IDT, Integrated Device Technology Inc
文件页数: 11/17页
文件大小: 0K
描述: IC SRAM 1MBIT 20NS 100TQFP
标准包装: 6
格式 - 存储器: RAM
存储器类型: SRAM - 双端口,异步
存储容量: 1M (128K x 8)
速度: 20ns
接口: 并联
电源电压: 4.5 V ~ 5.5 V
工作温度: -40°C ~ 85°C
封装/外壳: 100-LQFP
供应商设备封装: 100-TQFP(14x14)
包装: 托盘
其它名称: 7009L20PFI
IDT7009L
High-Speed 128K x 8 Dual-Port Static RAM
Industrial and Commercial Temperature Ranges
Timing Waveform of Write with Port-to-Port Read and BUSY (M/ S = V IH ) (2,4,5)
t WC
ADDR "A"
MATCH
t WP
R/ W "A"
DATA IN "A"
t DW
VALID
t DH
ADDR "B"
t APS
(1)
MATCH
BUSY "B"
t WDD
t BDA
t BDD
DATA OUT "B"
NOTES:
1. To ensure that the earlier of the two ports wins. t APS is ignored for M/ S = V IL (SLAVE).
t DDD
(3)
VALID
4839 drw 11
2. CE L = CE R = V IL, refer to Chip Enable Truth Table.
3. OE = V IL for the reading port.
4. If M/ S = V IL (SLAVE), BUSY is an input. Then for this example BUSY "A" = V IH and BUSY "B" input is shown above.
5. All timing is the same for left and right ports. Port "A" may be either the left or right port. Port "B" is the port opposite from port "A".
Timing Waveform of Write with BUSY (M/ S = V IL )
t WP
R/ W "A"
t WB (3)
BUSY "B"
t WH (1)
R/ W "B"
(2)
NOTES:
1. t WH must be met for both BUSY input (SLAVE) and output (MASTER).
2. BUSY is asserted on port "B" blocking R/W "B" , until BUSY "B" goes HIGH.
3. t WB is only for the 'Slave' version.
11
6.42
4839 drw 12
.
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