8 Mbit (x8) Multi-Purpose Flash
SST39LF080 / SST39VF080
SST39LF/VF0803.0 & 2.7V 8Mb (x8) MPF memories
EOL Data Sheet
FEATURES:
• Organized as 1M x8
• Single Voltage Read and Write Operations
– 3.0-3.6V for SST39LF080
– 2.7-3.6V for SST39VF080
• Superior Reliability
– Endurance: 100,000 Cycles (typical)
– Greater than 100 years Data Retention
• Low Power Consumption
(typical values at 14 MHz)
– Active Current: 12 mA (typical)
– Standby Current: 4 µA (typical)
– Auto Low Power Mode: 4 µA (typical)
• Sector-Erase Capability
– Uniform 4 KByte sectors
• Block-Erase Capability
– Uniform 64 KByte blocks
• Fast Read Access Time:
– 55 ns for SST39LF080
– 70 and 90 ns for SST39VF080
• Latched Address and Data
• Fast Erase and Byte-Program:
– Sector-Erase Time: 18 ms (typical)
– Block-Erase Time: 18 ms (typical)
– Chip-Erase Time: 70 ms (typical)
– Byte-Program Time: 14 µs (typical)
– Chip Rewrite Time:
15 seconds (typical) for SST39LF/VF080
• Automatic Write Timing
– Internal V
PP
Generation
• End-of-Write Detection
– Toggle Bit
– Data# Polling
• CMOS I/O Compatibility
• JEDEC Standard
– Flash EEPROM Pinouts and command sets
• Packages Available
– 40-lead TSOP (10mm x 20mm)
– 48-ball TFBGA (6mm x 8mm)
PRODUCT DESCRIPTION
The SST39LF/VF080 devices are 1M x8 CMOS Multi-Pur-
pose Flash (MPF) manufactured with SST’s proprietary,
high-performance CMOS SuperFlash technology. The
split-gate cell design and thick-oxide tunneling injector
attain better reliability and manufacturability compared with
alternate approaches. The SST39LF080 write (Program or
Erase) with a 3.0-3.6V power supply. The SST39VF080
write (Program or Erase) with a 2.7-3.6V power supply.
They conform to JEDEC standard pinouts for x8 memories.
Featuring high performance Byte-Program, the SST39LF/
VF080 devices provide a typical Byte-Program time of 14
µsec. The devices use Toggle Bit or Data# Polling to indi-
cate the completion of Program operation. To protect
against inadvertent write, they have on-chip hardware and
Software Data Protection schemes. Designed, manufac-
tured, and tested for a wide spectrum of applications,
these devices are offered with a guaranteed typical
endurance of 10,000 cycles. Data retention is rated at
greater than 100 years.
The SST39LF/VF080 devices are suited for applications
that require convenient and economical updating of pro-
gram, configuration, or data memory. For all system appli-
cations, they significantly improve performance and
reliability, while lowering power consumption. They inher-
ently use less energy during Erase and Program than alter-
©2007 Silicon Storage Technology, Inc.
S71146-07-EOL
6/07
1
The SST logo and SuperFlash are registered trademarks of Silicon Storage Technology, Inc.
MPF is a trademark of Silicon Storage Technology, Inc.
These specifications are subject to change without notice.
native flash technologies. The total energy consumed is a
function of the applied voltage, current, and time of applica-
tion. Since for any given voltage range, the SuperFlash
technology uses less current to program and has a shorter
erase time, the total energy consumed during any Erase or
Program operation is less than alternative flash technolo-
gies. They also improve flexibility while lowering the cost for
program, data, and configuration storage applications.
The SuperFlash technology provides fixed Erase and Pro-
gram times, independent of the number of Erase/Program
cycles that have occurred. Therefore the system software
or hardware does not have to be modified or de-rated as is
necessary with alternative flash technologies, whose Erase
and Program times increase with accumulated Erase/Pro-
gram cycles.
To meet high density, surface mount requirements, the
SST39LF/VF080 are offered in 40-lead TSOP and 48-
ball TFBGA packages. See Figures 1 and 2 for pin
assignments.
8 Mbit Multi-Purpose Flash
SST39LF080 / SST39VF080
EOL Data Sheet
Device Operation
Commands are used to initiate the memory operation func-
tions of the device. Commands are written to the device
using standard microprocessor write sequences. A com-
mand is written by asserting WE# low while keeping CE#
low. The address bus is latched on the falling edge of WE#
or CE#, whichever occurs last. The data bus is latched on
the rising edge of WE# or CE#, whichever occurs first.
The SST39LF/VF080 also have the
Auto Low Power
mode which puts the device in a near standby mode after
data has been accessed with a valid Read operation. This
reduces the I
DD
active read current from typically 15 mA to
typically 4 µA. The Auto Low Power mode reduces the typi-
cal I
DD
active read current to the range of 1 mA/MHz of
Read cycle time. The device exits the Auto Low Power
mode with any address transition or control signal transition
used to initiate another Read cycle, with no access time
penalty. Note that the device does not enter Auto Low
Power mode after power-up with CE# held steadily low until
the first address transition or CE# is driven high.
operation, the host is free to perform additional tasks. Any
commands issued during the internal Program operation
are ignored.
Sector/Block-Erase Operation
The Sector- (or Block-) Erase operation allows the system
to erase the device on a sector-by-sector (or block-by-
block) basis. The SST39LF/VF080 offer both Sector-Erase
and Block-Erase mode. The sector architecture is based
on uniform sector size of 4 KByte. The Block-Erase mode
is based on uniform block size of 64 KByte. The Sector-
Erase operation is initiated by executing a six-byte com-
mand sequence with Sector-Erase command (30H) and
sector address (SA) in the last bus cycle. The Block-Erase
operation is initiated by executing a six-byte command
sequence with Block-Erase command (50H) and block
address (BA) in the last bus cycle. The sector or block
address is latched on the falling edge of the sixth WE#
pulse, while the command (30H or 50H) is latched on the
rising edge of the sixth WE# pulse. The internal Erase
operation begins after the sixth WE# pulse. The End-of-
Erase operation can be determined using either Data#
Polling or Toggle Bit methods. See Figures 9 and 10 for tim-
ing waveforms. Any commands issued during the Sector-
or Block-Erase operation are ignored.
Read
The Read operation of the SST39LF/VF080 is controlled
by CE# and OE#, both have to be low for the system to
obtain data from the outputs. CE# is used for device selec-
tion. When CE# is high, the chip is deselected and only
standby power is consumed. OE# is the output control and
is used to gate data from the output pins. The data bus is in
high impedance state when either CE# or OE# is high.
Refer to the Read cycle timing diagram for further details
(Figure 3).
Chip-Erase Operation
The SST39LF/VF080 provide a Chip-Erase operation,
which allows the user to erase the entire memory array to
the “1” state. This is useful when the entire device must be
quickly erased.
The Chip-Erase operation is initiated by executing a six-
byte command sequence with Chip-Erase command (10H)
at address 5555H in the last byte sequence. The Erase
operation begins with the rising edge of the sixth WE# or
CE#, whichever occurs first. During the Erase operation,
the only valid read is Toggle Bit or Data# Polling. See Table
4 for the command sequence, Figure 8 for timing diagram,
and Figure 19 for the flowchart. Any commands issued dur-
ing the Chip-Erase operation are ignored.
Byte-Program Operation
The SST39LF/VF080 are programmed on a byte-by-byte
basis. Before programming, the sector where the byte
exists must be fully erased. The Program operation is
accomplished in three steps. The first step is the three-byte
load sequence for Software Data Protection. The second
step is to load byte address and byte data. During the Byte-
Program operation, the addresses are latched on the falling
edge of either CE# or WE#, whichever occurs last. The
data is latched on the rising edge of either CE# or WE#,
whichever occurs first. The third step is the internal Pro-
gram operation which is initiated after the rising edge of the
fourth WE# or CE#, whichever occurs first. The Program
operation, once initiated, will be completed within 20 µs.
See Figures 4 and 5 for WE# and CE# controlled Program
operation timing diagrams and Figure 16 for flowcharts.
During the Program operation, the only valid reads are
Data# Polling and Toggle Bit. During the internal Program
Write Operation Status Detection
The SST39LF/VF080 provide two software means to detect
the completion of a write (Program or Erase) cycle, in order
to optimize the system Write cycle time. The software
detection includes two status bits: Data# Polling (DQ
7
) and
Toggle Bit (DQ
6
). The End-of-Write detection mode is
enabled after the rising edge of WE#, which initiates the
internal Program or Erase operation.
©2007 Silicon Storage Technology, Inc.
S71146-07-EOL
6/07
2
8 Mbit Multi-Purpose Flash
SST39LF080 / SST39VF080
EOL Data Sheet
The actual completion of the nonvolatile write is asynchro-
nous with the system; therefore, either a Data# Polling or
Toggle Bit read may be simultaneous with the completion
of the Write cycle. If this occurs, the system may possibly
get an erroneous result, i.e., valid data may appear to con-
flict with either DQ
7
or DQ
6
. In order to prevent spurious
rejection, if an erroneous result occurs, the software routine
should include a loop to read the accessed location an
additional two (2) times. If both reads are valid, then the
device has completed the Write cycle, otherwise the rejec-
tion is valid.
Data Protection
The SST39LF/VF080 provide both hardware and soft-
ware features to protect nonvolatile data from inadvertent
writes.
Hardware Data Protection
Noise/Glitch Protection: A WE# or CE# pulse of less than 5
ns will not initiate a Write cycle.
V
DD
Power Up/Down Detection: The Write operation is
inhibited when V
DD
is less than 1.5V.
Write Inhibit Mode: Forcing OE# low, CE# high, or WE#
high will inhibit the Write operation. This prevents inadvert-
ent writes during power-up or power-down.
Data# Polling (DQ
7
)
When the SST39LF/VF080 are in the internal Program
operation, any attempt to read DQ
7
will produce the com-
plement of the true data. Once the Program operation is
completed, DQ
7
will produce true data. Note that even
though DQ
7
may have valid data immediately following the
completion of an internal Write operation, the remaining
data outputs may still be invalid: valid data on the entire
data bus will appear in subsequent successive Read
cycles after an interval of 1 µs. During internal Erase opera-
tion, any attempt to read DQ
7
will produce a ‘0’. Once the
internal Erase operation is completed, DQ
7
will produce a
‘1’. The Data# Polling is valid after the rising edge of fourth
WE# (or CE#) pulse for Program operation. For Sector-,
Block- or Chip-Erase, the Data# Polling is valid after the ris-
ing edge of sixth WE# (or CE#) pulse. See Figure 6 for
Data# Polling timing diagram and Figure 17 for a flowchart.
Software Data Protection (SDP)
The SST39LF/VF080 provide the JEDEC approved Soft-
ware Data Protection scheme for all data alteration opera-
tions, i.e., Program and Erase. Any Program operation
requires the inclusion of the three-byte sequence. The
three-byte load sequence is used to initiate the Program
operation, providing optimal protection from inadvertent
Write operations, e.g., during the system power-up or
power-down. Any Erase operation requires the inclusion of
six-byte sequence. The SST39LF/VF080 devices are
shipped with the Software Data Protection permanently
enabled. See Table 4 for the specific software command
codes. During SDP command sequence, invalid com-
mands will abort the device to Read mode within T
RC.
Toggle Bit (DQ
6
)
During the internal Program or Erase operation, any con-
secutive attempts to read DQ
6
will produce alternating 1s
and 0s, i.e., toggling between 1 and 0. When the internal
Program or Erase operation is completed, the DQ
6
bit will
stop toggling. The device is then ready for the next opera-
tion. The Toggle Bit is valid after the rising edge of fourth
WE# (or CE#) pulse for Program operation. For Sector-,
Block-, or Chip-Erase, the Toggle Bit is valid after the rising
edge of sixth WE# (or CE#) pulse. See Figure 7 for Toggle
Bit timing diagram and Figure 17 for a flowchart.
Common Flash Memory Interface (CFI)
The SST39LF/VF080 also contain the CFI information to
describe the characteristics of the device. In order to enter
the CFI Query mode, the system must load the three-byte
sequence, similar to the Software ID Entry command. The
last byte cycle of this command loads 98H (CFI Query
command) to address 5555H. 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.
©2007 Silicon Storage Technology, Inc.
S71146-07-EOL
6/07
3
8 Mbit Multi-Purpose Flash
SST39LF080 / SST39VF080
EOL Data Sheet
Product Identification
The Product Identification mode identifies the device as
SST39LF080 or SST39VF080 and manufacturer as SST.
This mode may be accessed by software operations.
Users may use the Software Product Identification opera-
tion to identify the part (i.e., using the device ID) when using
multiple manufacturers 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: P
RODUCT
I
DENTIFICATION
Address
Manufacturer’s ID
Device ID
SST39LF/VF080
0001H
D8H
T1.3 1146
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 13 for timing waveform and Figure 18 for a
flowchart.
Data
BFH
0000H
F
UNCTIONAL
B
LOCK
D
IAGRAM
X-Decoder
SuperFlash
Memory
Memory
Address
Address Buffer & Latches
Y-Decoder
CE#
OE#
WE#
DQ7 - DQ0
1146 B1.2
Control Logic
I/O Buffers and Data Latches
©2007 Silicon Storage Technology, Inc.
S71146-07-EOL
6/07
4
8 Mbit Multi-Purpose Flash
SST39LF080 / SST39VF080
EOL Data Sheet
A16
A15
A14
A13
A12
A11
A9
A8
WE#
NC
NC
NC
A18
A7
A6
A5
A4
A3
A2
A1
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
Standard Pinout
Top View
Die Up
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
A17
VSS
NC
A19
A10
DQ7
DQ6
DQ5
DQ4
VDD
VDD
NC
DQ3
DQ2
DQ1
DQ0
OE#
VSS
CE#
A0
1146 F01.3
FIGURE 1: Pin Assignments for 40-lead TSOP
TOP VIEW (balls facing down)
6
5
4
3
2
1
A14 A13 A15
A9
A8
A11
NC
NC
A6
A2
A16 A17 NC
NC VSS
A12 A19 A10 DQ6 DQ7
NC DQ5 NC
VDD DQ4
1146 48-tfbga P2.2
WE# NC
NC
A7
A3
NC
A18
A4
NC DQ2 DQ3 VDD NC
A5
A1
DQ0 NC
NC DQ1
A0 CE# OE# VSS
A
B
C
D
E
F
G
H
FIGURE 2: Pin Assignments for 48-ball TFBGA
©2007 Silicon Storage Technology, Inc.
S71146-07-EOL
6/07
5
微控制器 MCU
京公网安备 11010802033920号
Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved
电子工程世界
