SST36VF1601C データシートの表示（PDF） - Silicon Storage Technology
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SST36VF1601C Datasheet PDF : 34 Pages
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16 Mbit Dual-Bank Flash Memory
SST36VF1601C / SST36VF1602C
Common Flash Memory Interface (CFI)
These devices also contain the CFI information to
describe the characteristics of the devices. In order to
enter the CFI Query mode, the system must write the
three-byte sequence, same as the Software ID Entry com-
mand with 98H (CFI Query command) to address 555H in
the last byte sequence. See Figure 16 for CFI Entry and
Read timing diagram. Once the device enters the CFI
Query mode, the system can read CFI data at the
addresses given in Tables 6 through 8. The system must
write the CFI Exit command to return to Read mode from
the CFI Query mode.
Security ID
The SST36VF160xC devices offer a 256-bit Security ID
space. The Secure ID space is divided into two 128-bit seg-
ments—one factory programmed segment and one user
programmed segment. The first segment is programmed
and locked at SST with a unique, 128-bit number. The user
segment is left un-programmed for the customer to pro-
gram as desired. To program the user segment of the
Security ID, the user must use the Security ID Program
command. End-of-Write status is checked by reading the
toggle bits. Data# Polling is not used for Security ID End-of-
Write detection. Once programming 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, nei-
ther Sec ID segment can be erased. The Secure ID space
can be queried by executing a three-byte command
sequence with Query Sec ID command (88H) at address
555H in the last byte sequence. See Figure 18 for timing
diagram. To exit this mode, the Exit Sec ID command
should be executed. Refer to Table 5 for more details.
EOL Data Sheet
Product Identification
The Product Identification mode identifies the devices and
manufacturer. For details, see Table 2 for software opera-
tion, Figure 15 for the Software ID Entry and Read timing
diagram and Figure 25 for the Software ID Entry command
sequence flowchart. The addresses A19 and A18 indicate a
bank address. When the addressed bank is switched to
Product Identification mode, it is possible to read another
address from the same bank without issuing a new Soft-
ware ID Entry command.
TABLE 2: PRODUCT IDENTIFICATION
Manufacturer’s ID
Device ID
SST36VF1601C
SST36VF1602C
Address
BK0000H
BK0001H
BK0001H
Note: BK = Bank Address (A19-A18)
Data
00BFH
734BH
734AH
T2.0 1249
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 appar-
ently 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 5 for the software command code, Fig-
ure 17 for timing waveform and Figure 26 for a flowchart.
FUNCTIONAL BLOCK DIAGRAM
Memory
Address
Address
Buffers
BYTE#
RST#
CE#
WP#
WE#
OE#
RY/BY#
©2006 Silicon Storage Technology, Inc.
Control
Logic
(8 KWord Sector Protection)
SuperFlash Memory
12 Mbit Bank
SuperFlash Memory
4 Mbit Bank
I/O Buffers
1249 B1.0
DQ15/A-1 - DQ0
S71249-07-EOL
02/08
5
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