参数资料
型号: IDT71124S20YGI
厂商: IDT, Integrated Device Technology Inc
文件页数: 6/8页
文件大小: 0K
描述: IC SRAM 1MBIT 20NS 32SOJ
标准包装: 23
格式 - 存储器: RAM
存储器类型: SRAM - 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: 32-BSOJ
供应商设备封装: 32-SOJ
包装: 管件
其它名称: 71124S20YGI
IDT71124 CMOS Static RAM
1 Meg (128K x 8-bit) Revolutionary Pinout
Commercial and Industrial Temperature Ranges
Timing Waveform of Write Cycle No. 1 ( WE Controlled Timing ) (1,2,4)
t WC
ADDRESS
t AW
CS
t WR
WE
t AS
t WP
(2)
.
DATA OUT
(3)
t WHZ
(5)
HIGH IMPEDANCE
t OW
(5)
(3)
t CHZ (5)
t DW
t DH
DATA IN
DATA IN VALID
3514 drw 07
Timing Waveform of Write Cycle No. 2 ( CS Controlled Timing) (1,4)
t WC
ADDRESS
t AW
CS
t AS
t CW
t WR
.
WE
t DW
t DH
DATA IN
DATA IN VALID
3514 drw 08
NOTES:
1. A write occurs during the overlap of a LOW CS and a LOW WE .
2. OE is continuously HIGH. During a WE controlled write cycle with OE LOW, t WP must be greater than or equal to t WHZ + 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 a WE controlled write cycle, this requirement does not apply and the minimum write pulse is the specified t WP .
3. During this period, I/O pins are in the output state, and input signals must not be applied.
4. If the CS LOW transition occurs simultaneously with or after the WE LOW transition, the outputs remain in a high impedance state. CS must be active during the t CW write period.
5. Transition is measured ±200mV from steady state.
6.42
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