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SST29VF020-70-4I-NHE 데이터시트(PDF) 4 Page - Silicon Storage Technology, Inc |
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SST29VF020-70-4I-NHE 데이터시트(HTML) 4 Page - Silicon Storage Technology, Inc |
4 / 25 page 4 Data Sheet 2 Mbit / 4 Mbit Small-Sector Flash SST29SF020 / SST29SF040 SST29VF020 / SST29VF040 ©2005 Silicon Storage Technology, Inc. S71160-13-000 10/06 Product Identification The Product Identification mode identifies the devices as SST29SF020, SST29SF040 and SST29VF020, SST29VF040 and manufacturer as SST. This mode may be accessed by software operations. Users may use the Software Product Identification operation to identify the part (i.e., using the device ID) when using multiple manufactur- ers in the same socket. For details, see Table 4 for software operation, Figure 11 for the Software ID Entry and Read timing diagram, and Figure 18 for the Software ID Entry command sequence flowchart. Product Identification Mode Exit/Reset In order to return to the standard Read mode, the Software Product Identification mode must be exited. Exit is accom- plished by issuing the Software ID Exit command sequence, which returns the device to the Read operation. Please note that the Software ID Exit command is ignored during an internal Program or Erase operation. See Table 4 for software command codes, Figure 12 for timing wave- form, and Figure 18 for a flowchart. FIGURE 1: Functional Block Diagram TABLE 1: Product Identification Address Data Manufacturer’s ID 0000H BFH Device ID SST29SF020 0001H 24H SST29VF020 0001H 25H SST29SF040 0001H 13H SST29VF040 0001H 14H T1.3 1160 Y-Decoder I/O Buffers and Data Latches 1160 B1.0 Address Buffers & Latches X-Decoder DQ7 - DQ0 Memory Address OE# CE# WE# SuperFlash Memory Control Logic |
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