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FM18W08-SG 参数 Datasheet PDF下载

FM18W08-SG图片预览
型号: FM18W08-SG
PDF下载: 下载PDF文件 查看货源
内容描述: 256KB宽电压字节宽度的F- RAM [256Kb Wide Voltage Bytewide F-RAM]
分类和应用: 存储内存集成电路静态存储器光电二极管
文件页数/大小: 11 页 / 333 K
品牌: RAMTRON [ RAMTRON INTERNATIONAL CORPORATION ]
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FM18W08  
Read Cycle AC Parameters (TA = -40C to + 85C, CL = 30 pF, unless otherwise specified)  
VDD 2.7 to 3.0V VDD 3.0 to 5.5V  
Symbol  
tCE  
tCA  
tRC  
tPC  
tAS  
tAH  
tOE  
tHZ  
Parameter  
Min  
Max  
80  
Min  
Max Units Notes  
Chip Enable Access Time (to data valid)  
Chip Enable Active Time  
Read Cycle Time  
Precharge Time  
Address Setup Time  
70  
ns  
ns  
ns  
ns  
ns  
ns  
ns  
ns  
ns  
80  
145  
65  
0
70  
130  
60  
0
Address Hold Time  
15  
15  
Output Enable Access Time  
Chip Enable to Output High-Z  
Output Enable to Output High-Z  
15  
15  
15  
12  
15  
15  
1
1
tOHZ  
Write Cycle AC Parameters (TA = -40C to + 85C, unless otherwise specified)  
VDD 2.7 to 3.0V VDD 3.0 to 5.5V  
Symbol  
tCA  
tCW  
tWC  
tPC  
tAS  
tAH  
tWP  
tDS  
tDH  
Parameter  
Min  
80  
80  
145  
65  
0
15  
50  
40  
0
Max  
Min  
70  
70  
130  
60  
0
15  
40  
30  
0
Max Units Notes  
Chip Enable Active Time  
Chip Enable to Write High  
Write Cycle Time  
Precharge Time  
Address Setup Time  
Address Hold Time  
Write Enable Pulse Width  
Data Setup  
Data Hold  
ns  
ns  
ns  
ns  
ns  
ns  
ns  
ns  
ns  
tWZ  
tWX  
tHZ  
tWS  
tWH  
Notes  
Write Enable Low to Output High Z  
Write Enable High to Output Driven  
Chip Enable to Output High-Z  
Write Enable Setup  
15  
15  
15  
15  
ns  
ns  
ns  
ns  
ns  
1
1
1
2
2
10  
10  
0
0
0
0
Write Enable Hold  
1
2
This parameter is periodically sampled and not 100% tested.  
The relationship between /CE and /WE determines if a /CE- or /WE-controlled write occurs. There is no timing  
specification associated with this relationship.  
Data Retention  
Symbol  
TDR  
Parameter  
@ +85ºC  
@ +80ºC  
@ +75ºC  
Min  
10  
19  
Max  
Units  
Years  
Years  
Years  
Notes  
-
-
-
38  
Rev. 2.0  
Dec. 2011  
Page 7 of 11  
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