AM29F400BB PDF

Continuity of Specifications There is no change to this data sheet as a result of offering the device as a Spansion product. Any changes that have been made Program and Erase Operation Status Refer to publication number for more information. The command register itself does not occupy any addressable memory loca- tion. The register is composed of

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Continuity of Specifications There is no change to this data sheet as a result of offering the device as a Spansion product. Any changes that have been made Program and Erase Operation Status Refer to publication number for more information.

The command register itself does not occupy any addressable memory loca- tion. The register is composed of After the system writes the autoselect command sequence, the device enters the autoselect mode. The system can then read autoselect codes from the internal register which is separate from the memory array on DQ7—DQ0. Standard read cycle timings apply in Table 2. Table 4. Hardware Data Protection The command sequence requirement of unlock cycles for programming or erasing provides data protection against inadver tent writes refer to Table 5 for command definitions.

In addition, the following hard- ware data protection measures prevent accidental erasure Table 5 defines the valid register command sequences. Writing incorrect address and data values or writing them in the improper sequence resets the It is recom- mended that processor interrupts be disabled during this time to ensure all commands are accepted.

The interrupts can be re-enabled after the This command is valid only during the sector Table 5. Table 6 and the following subsec- tions describe the functions of these bits. The remaining scenario is that the system initially determines that the toggle bit is toggling and DQ5 has not gone high. The system may continue to monitor the toggle bit and DQ5 through successive read cycles, determining the status as Figure 8.

Illustration shows first status cycle after command sequence, last status read DQ2 toggles only when read at an address within an erase-suspended sector. Typical program and erase times assume the following conditions: 25 programming typicals Revision B October Global Added and speed options, deleted speed option. Changed data sheet designation from Advance Information to Preliminary. Connection Diagrams Corrected pinouts on all packages: deleted General Description Third paragraph: Added access times.

Please note that Spansion Inc. Any semiconductor devices have an inherent chance of failure About Contact Requests Pricing Request parts. My request: 0 parts. Bonase Electronics HK Co.

Part Number:. The following document contains information on Spansion memory products. There is no change to this data sheet as a result of offering the device as a Spansion product. Please contact your local sales office for additional information about Spansion memory solutions. Request R. Page Page 11 After the system writes the autoselect command sequence, the device enters the autoselect mode.

Page 13 Table 4. Page 14 Hardware Data Protection The command sequence requirement of unlock cycles for programming or erasing provides data protection against inadver tent writes refer to Table 5 for command definitions.

Page 17 It is recom- mended that processor interrupts be disabled during this time to ensure all commands are accepted. Page 19 Table 5. Page 22 The remaining scenario is that the system initially determines that the toggle bit is toggling and DQ5 has not gone high.

Page 42 General Description Third paragraph: Added access times.

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AM29F400BB-70SE PDF Datasheet浏览和下载

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