SST39VF160 데이터 시트보기 (PDF) - Silicon Storage Technology

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SST39VF160

16 Mbit (x16) Multi-Purpose Flash

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.

16 Mbit Multi-Purpose Flash

SST39LF160 / SST39VF160

Data Sheet

TABLE 1: PRODUCT IDENTIFICATION

Manufacturer’s ID

Device ID

SST39LF/VF160

Address

0000H

0001H

Data

00BFH

2782H

T1.2 399

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.

©2001 Silicon Storage Technology, Inc.

4

S71145-02-000 6/01 399

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