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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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JS28F256P30B95A датащи(PDF) 6 Page - Micron Technology |
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JS28F256P30B95A датащи(HTML) 6 Page - Micron Technology |
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6 / 97 page  P30 Datasheet August 2008 6 306666-12 The P30 protection register allows unique flash device identification that can be used to increase system security. The individual Block Lock feature provides zero-latency block locking and unlocking. In addition, the P30 device also has four pre-defined spaces in the main array that can be configured as One-Time Programmable (OTP). 1.3 Virtual Chip Enable Description The P30 512Mbit devices employ a Virtual Chip Enable which combines two 256-Mbit die with a common chip enable, F1-CE# for QUAD+ packages or CE# for Easy BGA and TSOP packages. (Refer to Figure 9 on page 21 and Figure 10 on page 21). Address A24 (Quad+ package) or A25 (Easy BGA and TSOP packages) is then used to select between the die pair with F1-CE# / CE# asserted depending upon the package option used. When chip enable is asserted and QUAD+ A24 (Easy BGA/TSOP A25) is low (VIL), The lower parameter die is selected; when chip enable is asserted and QUAD+ A24 (Easy BGA/TSOP A25) is high (VIH), the upper parameter die is selected. Refer to Table 1 and Table 2 for additional details. Table 1: Virtual Chip Enable Truth Table for 512 Mb (QUAD+ Package) Die Selected F1-CE# A24 Lower Param Die L L Upper Param Die L H Table 2: Virtual Chip Enable Truth Table for 512 Mb (Easy BGA & TSOP Packages) Die Selected CE# A25 Lower Param Die L L Upper Param Die L H |
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