参数资料
型号: IDT70V08S15PF
厂商: IDT, Integrated Device Technology Inc
文件页数: 10/20页
文件大小: 0K
描述: IC SRAM 512KBIT 15NS 100TQFP
标准包装: 45
格式 - 存储器: RAM
存储器类型: SRAM - 双端口,异步
存储容量: 512K (64K x 8)
速度: 15ns
接口: 并联
电源电压: 3 V ~ 3.6 V
工作温度: 0°C ~ 70°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: 70V08S15PF
IDT70V08S/L
High-Speed 3.3.V 64K x 8 Dual-Port Static RAM
Industrial and Commercial Temperature Ranges
Timing Waveform of Write Cycle No. 1, R/ W Controlled Timing (1,5,8)
t WC
ADDRESS
OE
t AW
t HZ
(7)
CE or SEM
(9,10)
t AS
(6)
t WP (2)
t WR
(3)
R/ W
t WZ (7)
t OW
DATA OUT
(4)
t DW
t DH
(4)
CE or SEM
DATA IN
3740 drw 07
Timing Waveform of Write Cycle No. 2, CE Controlled Timing (1,5)
t WC
ADDRESS
t AW
(9,10)
t AS (6)
t EW (2)
t WR
(3)
R/ W
t DW
t DH
DATA IN
3740 drw 08
NOTES:
1. R/ W or CE must be HIGH during all address transitions.
2. A write occurs during the overlap (t EW or t WP ) of a LOW CE and a LOW R/ W for memory array writing cycle.
3. t WR is measured from the earlier of CE or R/ W (or SEM or R/ W ) going HIGH to the end of write cycle.
4. During this period, the I/O pins are in the output state and input signals must not be applied.
5. If the CE or SEM LOW transition occurs simultaneously with or after the R/ W LOW transition, the outputs remain in the High-impedance state.
6. Timing depends on which enable signal is asserted last, CE or R/ W .
7. This parameter is guaranteed by device characterization, but is not production tested. Transition is measured 0mV from steady state with the Output Test Load
(Figure 2).
8. If OE is LOW during R/ W controlled write cycle, the write pulse width must be the larger of t WP or (t WZ + t DW ) to allow the I/O drivers to turn off and data to be placed on the
bus for the required t DW . If OE is HIGH during an R/W controlled write cycle, this requirement does not apply and the write pulse can be as short as the specified t WP .
9. To access RAM, CE = V IL and SEM = V IH . To access semaphore, CE = V IH and SEM = V IL . t EW must be met for either condition.
10. Refer to Chip Enable Truth Table.
10
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