SST39LF160 Silicon Storage Technology, SST39LF160 Datasheet - Page 4

• Manufacturer Part Number: SST39LF160
• Description: (SST39VF160 / SST39LF160) 16 Mbit (x16) Multi-Purpose Flash
• Manufacturer: Silicon Storage Technology

Common Flash Memory Interface (CFI)
The SST39LF160 and SST39VF160 also contain the CFI
information to describe the characteristics of the device.
In order to enter the CFI Query mode, the system must
write three-byte sequence, same as product ID entry
command with 98H (CFI Query command) to address
5555H in the last byte sequence. Once the device enters
the CFI Query mode, the system can read CFI data at the
addresses given in Tables 5 through 7. The system must
write the CFI Exit command to return to Read mode from
the CFI Query mode.
Product Identification
The Product Identification mode identifies the devices as
the SST39LF/VF160 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 manu-
facturers in the same socket. For details, see Table 4 for
software operation, Figure 10 for the Software ID Entry and
Read timing diagram, and Figure 17 for the Software ID
Entry command sequence flowchart.
©2001 Silicon Storage Technology, Inc.
4
TABLE 1: P
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 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 12 for timing waveform and Figure 17 for a
flowchart.
Manufacturer’s ID
Device ID
SST39LF/VF160
RODUCT
16 Mbit Multi-Purpose Flash
SST39LF160 / SST39VF160
I
DENTIFICATION
Address
0000H
0001H
S71145-02-000 6/01
Data Sheet
00BFH
2782H
Data
T1.2 399
399