参数资料
型号: IDT7015L12JG
厂商: IDT, Integrated Device Technology Inc
文件页数: 13/20页
文件大小: 0K
描述: IC SRAM 72KBIT 12NS 68PLCC
标准包装: 18
格式 - 存储器: RAM
存储器类型: SRAM - 双端口,异步
存储容量: 72K(8K x 9)
速度: 12ns
接口: 并联
电源电压: 4.5 V ~ 5.5 V
工作温度: 0°C ~ 70°C
封装/外壳: 68-LCC(J 形引线)
供应商设备封装: 68-PLCC(24x24)
包装: 管件
IDT7015S/L
Timing Waveform of Read with BUSY
High-Speed 8K x 9 Dual-Port Static RAM
(2,4,5)
t WC
Military, Industrial and Commercial Temperature Ranges
(M/ S = V IH )
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:
t DDD
(3)
VALID
2954 drw 13
1. To ensure that the earlier of the two ports wins. t APS is ignored for M/S=V IL
2. CE L = CE R = V IL
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 (3)
t WP
R/ W "A"
t WB
BUSY "B"
t WH
(1)
NOTES:
R/ W "B"
(2)
2954 drw 14
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. 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".
13
6.42
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