8 Mbit / 16 Mbit Multi-Purpose Flash
SST39LF080 / SST39LF016 / SST39VF080 / SST39VF016
Data Sheet
Product Identification
Product Identification Mode Exit/
CFI Mode Exit
The Product Identification mode identifies the device as the
SST39LF080,
SST39VF080,
SST39LF016,
and
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.
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 4 for software command
codes, Figure 13 for timing waveform and Figure 18 for a
flowchart.
SST39VF016 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.
TABLE 1: PRODUCT IDENTIFICATION
Address
Data
Manufacturer’s ID
Device ID
0000H
BFH
SST39LF/VF080
SST39LF/VF016
0001H
0001H
D8H
D9H
T1.2 396
FUNCTIONAL BLOCK DIAGRAM
SuperFlash
Memory
X-Decoder
Memory
Address
Address Buffer & Latches
Control Logic
Y-Decoder
CE#
I/O Buffers and Data Latches
OE#
WE#
DQ - DQ
7
0
396 ILL B1.2
©2003 Silicon Storage Technology, Inc.
S71146-04-000 3/03 396
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