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SST39VF3201-90-4I-EKE Datasheet(PDF) 5 Page - Silicon Storage Technology, Inc |
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SST39VF3201-90-4I-EKE Datasheet(HTML) 5 Page - Silicon Storage Technology, Inc |
5 / 32 page Data Sheet 16 Mbit / 32 Mbit / 64 Mbit Multi-Purpose Flash Plus SST39VF1601 / SST39VF3201 / SST39VF6401 SST39VF1602 / SST39VF3202 / SST39VF6402 5 ©2005 Silicon Storage Technology, Inc. S71223-04-000 11/05 Product Identification The Product Identification mode identifies the devices as the SST39VF1601, SST39VF1602, SST39VF3201, SST39VF3202, SST39VF6401, SST39VF6402, and manufacturer as SST. This mode may be accessed soft- ware operations. Users may use the Software Product Identification operation to identify the part (i.e., using the device ID) when using multiple manufacturers in the same socket. For details, see Table 6 for software operation, Figure 11 for the Software ID Entry and Read timing dia- gram and Figure 21 for the Software ID Entry command sequence flowchart. Product Identification Mode Exit/ CFI Mode Exit 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 mode. This command may also be used to reset the device to the Read mode after any inadvertent transient condition that apparently causes the device to behave abnormally, e.g., not read correctly. Please note that the Software ID Exit/ CFI Exit command is ignored during an internal Program or Erase operation. See Table 6 for software command codes, Figure 13 for timing waveform, and Figures 21 and 22 for flowcharts. Security ID The SST39VF160x/320x/640x devices offer a 256-bit Security ID space. The Secure ID space is divided into two 128-bit segments - one factory programmed segment and one user programmed segment. The first segment is pro- grammed and locked at SST with a random 128-bit num- ber. The user segment is left un-programmed for the customer to program as desired. To program the user segment of the Security ID, the user must use the Security ID Word-Program command. To detect end-of-write for the SEC ID, read the toggle bits. Do not use Data# Polling. Once this is complete, the Sec ID should be locked using the User Sec ID Program Lock-Out. This disables any future corruption of this space. Note that regardless of whether or not the Sec ID is locked, neither Sec ID segment can be erased. The Secure ID space can be queried by executing a three- byte command sequence with Enter Sec ID command (88H) at address 5555H in the last byte sequence. To exit this mode, the Exit Sec ID command should be executed. Refer to Table 6 for more details. TABLE 3: PRODUCT IDENTIFICATION Address Data Manufacturer’s ID 0000H BFH Device ID SST39VF1601 0001H 234BH SST39VF1602 0001H 234AH SST39VF3201 0001H 235BH SST39VF3202 0001H 235AH SST39VF6401 0001H 236BH SST39VF6402 0001H 236AH T3.2 1223 |
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