512 Kbit / 1 Mbit / 2 Mbit / 4 Mbit (x8)
Many-Time Programmable Flash
SST37VF512 / SST37VF010 / SST37VF020 / SST37VF040
SST37VF512 / 010 / 020 / 0402.7V-Read 512Kb / 1Mb / 2Mb / 4Mb (x8) MTP flash memories
Data Sheet
FEATURES:
• Organized as 64K x8 / 128K x8 / 256K x8 / 512K x8
• 2.7-3.6V Read Operation
• Superior Reliability
– Endurance: At least 1000 Cycles
– Greater than 100 years Data Retention
• Low Power Consumption:
– Active Current: 10 mA (typical)
– Standby Current: 2 µA (typical)
• Fast Read Access Time:
– 70 ns
– 90 ns
• Latched Address and Data
• Fast Byte-Program Operation:
– Byte-Program Time: 10 µs (typical)
– Chip Program Time:
0.6 seconds (typical) for SST37VF512
1.2 seconds (typical) for SST37VF010
2.4 seconds (typical) for SST37VF020
4.8 seconds (typical) for SST37VF040
• Electrical Erase Using Programmer
– Does not require UV source
– Chip-Erase Time: 100 ms (typical)
• CMOS I/O Compatibility
• JEDEC Standard Byte-wide Flash
EEPROM Pinouts
• Packages Available
– 32-pin PLCC
– 32-pin TSOP (8mm x 14mm)
– 32-pin PDIP
PRODUCT DESCRIPTION
The SST37VF512/010/020/040 devices are 64K x8 / 128K
x8 / 256K x8 / 512K x8 CMOS, Many-Time Programmable
(MTP), low cost flash, 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 SST37VF512/010/020/040 can
be electrically erased and programmed at least 1000 times
using an external programmer, e.g., to change the contents
of devices in inventory. The SST37VF512/010/020/040
have to be erased prior to programming. These devices
conform to JEDEC standard pinouts for byte-wide flash
memories.
Featuring high performance Byte-Program, the
SST37VF512/010/020/040 provide a typical Byte-Pro-
gram time of 10 µs. Designed, manufactured, and tested
for a wide spectrum of applications, these devices are
offered with an endurance of at least 1000 cycles. Data
retention is rated at greater than 100 years.
The SST37VF512/010/020/040 are suited for applications
that require infrequent writes and low power nonvolatile
storage. These devices will improve flexibility, efficiency,
and performance while matching the low cost in nonvolatile
applications that currently use UV-EPROMs, OTPs, and
mask ROMs.
To meet surface mount and conventional through hole
requirements, the SST37VF512/010/020/040 are offered in
32-pin PLCC, TSOP and PDIP packages. See Figures 1,
,
2, and 3 for pinouts.
Device Operation
The SST37VF512/010/020/040 devices are nonvolatile
memory solutions that can be used instead of standard
flash devices if in-system programmability is not required. It
is functionally (Read) and pin compatible with industry
standard flash products.The device supports electrical
Erase operation via an external programmer.
Read
The Read operation of the SST37VF512/010/020/040 is
controlled by CE# and OE#. Both CE# and OE# have to be
low for the system to obtain data from the outputs. Once
the address is stable, the address access time is equal to
the delay from CE# to output (T
CE
). Data is available at the
output after a delay of TOE from the falling edge of OE#,
assuming the CE# pin has been low and the addresses
have been stable for at least T
CE
- T
OE
. When the CE# pin
is high, the chip is deselected and a standby current of only
10 µA (typical) 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 V
IH
.
Refer to Figure 4 for the timing diagram.
©2001 Silicon Storage Technology, Inc.
S71151-02-000 5/01
397
1
The SST logo and SuperFlash are registered trademarks of Silicon Storage Technology, Inc.
MTP is a trademark of Silicon Storage Technology, Inc.
These specifications are subject to change without notice.
512 Kbit / 1 Mbit / 2 Mbit / 4 Mbit Multi-Purpose Flash
SST37VF512 / SST37VF010 / SST37VF020 / SST37VF040
Data Sheet
Byte-Program Operation
The SST37VF512/010/020/040 are programmed by using
an external programmer. The programming mode is acti-
vated by asserting 12V (±5%) on OE# pin and V
IL
on CE#
pin. The device is programmed using a single pulse (WE#
pin low) of 10 µs per byte. Using the MTP programming
algorithm, the Byte-Program process continues byte-by-
byte until the entire chip has been programmed. Refer to
Figure 10 for the flowchart and Figure 6 for the timing dia-
gram.
Product Identification Mode
The Product Identification mode identifies the devices as
SST37VF512,
SST37VF010,
SST37VF020,
and
SST37VF040 and manufacturer as SST. This mode may
be accessed by the hardware method. To activate this
mode, the programming equipment must force V
H
(12V±5%) on address A
9
. Two identifier bytes may then be
sequenced from the device outputs by toggling address
line A
0
. For details, see Table 3 for hardware operation.
TABLE 1: P
RODUCT
I
DENTIFICATION
Chip-Erase Operation
The only way to change a data from a “0” to “1” is by electri-
cal erase that changes every bit in the device to “1”. The
SST37VF512/010/020/040 use an electrical Chip-Erase
operation. The entire chip can be erased in 100 ms (WE#
pin low). In order to activate erase mode, the 12V (±5%) is
applied to OE# and A
9
pins while CE# is low. All other
address and data pins are “don’t care”. The falling edge of
WE# will start the Chip-Erase operation. Once the chip has
been erased, all bytes must be verified for FFH. Refer to Fig-
ure 9 for the flowchart and Figure 5 for the timing diagram.
Manufacturer’s ID
Device ID
SST37VF512
SST37VF010
SST37VF020
SST37VF040
Address
0000H
0001H
0001H
0001H
0001H
Data
BFH
C4H
C5H
C6H
C2H
T1.2 397
Design Considerations
The SST37VF512/010/020/040 should have a 0.1µF
ceramic high frequency, low inductance capacitor con-
nected between V
DD
and GND. This capacitor should be
placed as close to the package terminals as possible.
OE# and A
9
must remain stable at V
H
for the entire dura-
tion of an Erase operation. OE# must remain stable at V
H
for the entire duration of the Program operation.
F
UNCTIONAL
B
LOCK
D
IAGRAM
X-Decoder
SuperFlash
Memory
Memory Address
Address Buffer
Y-Decoder
CE#
OE#
A9
WE#
Control Logic
I/O Buffers
DQ7 - DQ0
397 ILL B1.1
©2001 Silicon Storage Technology, Inc.
S71151-02-000 5/01
397
2
512 Kbit / 1 Mbit / 2 Mbit / 4 Mbit Multi-Purpose Flash
SST37VF512 / SST37VF010 / SST37VF020 / SST37VF040
Data Sheet
SST37VF512 SST37VF010 SST37VF020 SST37VF040
WE#
WE#
WE#
WE#
VDD
A12
A15
A16
A18
VDD
A12
A15
A16
VDD
A12
A15
A16
NC
VDD
A12
A15
NC
NC
SST37VF040 SST37VF020 SST37VF010 SST37VF512
A7
A6
A5
A4
A3
A2
A1
A0
DQ0
A7
A6
A5
A4
A3
A2
A1
A0
DQ0
A7
A6
A5
A4
A3
A2
A1
A0
DQ0
A7
A6
A5
A4
A3
A2
A1
A0
DQ0
NC
SST37VF512 SST37VF010 SST37VF020 SST37VF040
5
6
7
8
9
10
11
12
13
SST37VF040 SST37VF020 SST37VF010 SST37VF512
4
3
2
1
32 31 30
29
28
27
26
25
24
23
22
NC
A17
NC
A17
A14
A13
A8
A9
A11
OE#
A10
CE#
DQ7
A14
A13
A8
A9
A11
OE#
A10
CE#
DQ7
A14
A13
A8
A9
A11
OE#
A10
CE#
DQ7
A14
A13
A8
A9
A11
OE#
A10
CE#
DQ7
32-pin PLCC
Top View
21
14 15 16 17 18 19 20
DQ1
DQ2
VSS
DQ3
DQ4
DQ5
DQ6
397 ILL F02a.2
DQ1
DQ2
VSS
DQ3
DQ4
DQ5
DQ5
DQ5
DQ1
DQ2
DQ3
DQ4
DQ1
DQ2
VSS
DQ3
DQ4
FIGURE 1: P
IN
A
SSIGNMENTS FOR
32-
PIN
PLCC
SST37VF040 SST37VF020 SST37VF010 SST37VF512
A11
A9
A8
A13
A14
A17
WE#
VDD
A18
A16
A15
A12
A7
A6
A5
A4
A11
A9
A8
A13
A14
A17
WE#
VDD
NC
A16
A15
A12
A7
A6
A5
A4
A11
A9
A8
A13
A14
NC
WE#
VDD
NC
A16
A15
A12
A7
A6
A5
A4
A11
A9
A8
A13
A14
NC
WE#
VDD
NC
NC
A15
A12
A7
A6
A5
A4
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
DQ6
DQ6
VSS
DQ6
SST37VF512 SST37VF010 SST37VF020 SST37VF040
OE#
A10
CE#
DQ7
DQ6
DQ5
DQ4
DQ3
VSS
DQ2
DQ1
DQ0
A0
A1
A2
A3
OE#
A10
CE#
DQ7
DQ6
DQ5
DQ4
DQ3
VSS
DQ2
DQ1
DQ0
A0
A1
A2
A3
OE#
A10
CE#
DQ7
DQ6
DQ5
DQ4
DQ3
VSS
DQ2
DQ1
DQ0
A0
A1
A2
A3
OE#
A10
CE#
DQ7
DQ6
DQ5
DQ4
DQ3
VSS
DQ2
DQ1
DQ0
A0
A1
A2
A3
397 ILL F01.0
Standard Pinout
Top View
FIGURE 2: P
IN
A
SSIGNMENTS FOR
32-
PIN
TSOP (8
MM
©2001 Silicon Storage Technology, Inc.
X
14
MM
)
S71151-02-000 5/01
397
3
512 Kbit / 1 Mbit / 2 Mbit / 4 Mbit Multi-Purpose Flash
SST37VF512 / SST37VF010 / SST37VF020 / SST37VF040
Data Sheet
SST37VF040 SST37VF020 SST37VF010 SST37VF512
A18
A16
A15
A12
A7
A6
A5
A4
A3
A2
A1
A0
DQ0
DQ1
DQ2
VSS
NC
A16
A15
A12
A7
A6
A5
A4
A3
A2
A1
A0
DQ0
DQ1
DQ2
VSS
NC
A16
A15
A12
A7
A6
A5
A4
A3
A2
A1
A0
DQ0
DQ1
DQ2
VSS
NC
NC
A15
A12
A7
A6
A5
A4
A3
A2
A1
A0
DQ0
DQ1
DQ2
VSS
1
2
3
4
5
32-pin
6
PDIP
7
8
Top View
9
10
11
12
13
14
15
16
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
SST37VF512 SST37VF010 SST37VF020 SST37VF040
VDD
WE#
NC
A14
A13
A8
A9
A11
OE#
A10
CE#
DQ7
DQ6
DQ5
DQ4
DQ3
VDD
WE#
NC
A14
A13
A8
A9
A11
OE#
A10
CE#
DQ7
DQ6
DQ5
DQ4
DQ3
VDD
WE#
A17
A14
A13
A8
A9
A11
OE#
A10
CE#
DQ7
DQ6
DQ5
DQ4
DQ3
VDD
WE#
A17
A14
A13
A8
A9
A11
OE#
A10
CE#
DQ7
DQ6
DQ5
DQ4
DQ3
397 ILL F02b.1
FIGURE 3: P
IN
A
SSIGNMENTS FOR
32-
PIN
PDIP
TABLE 2: P
IN
D
ESCRIPTION
Symbol
A
MS1
-A
0
DQ
7
-DQ
0
CE#
WE#
OE#
V
DD
V
SS
NC
Pin Name
Address Inputs
Data Input/output
Chip Enable
Write Enable
Output Enable
Power Supply
Ground
No Connection
Unconnected pins.
T2.1 397
Functions
To provide memory addresses.
To output data during Read cycles and receive input data during Program cycles.
The outputs are in tri-state when OE# or CE# is high.
To activate the device when CE# is low.
To program or erase (WE# = V
IL
pulse during Program or Erase)
To gate the data output buffers during Read operation when low
To provide 3.0V supply (2.7-3.6V)
1. A
MS
= Most significant address
A
MS
= A
15
for SST37VF512, A
16
for SST37VF010, A
17
for SST37VF020, and A
18
for SST37VF040
©2001 Silicon Storage Technology, Inc.
S71151-02-000 5/01
397
4
512 Kbit / 1 Mbit / 2 Mbit / 4 Mbit Multi-Purpose Flash
SST37VF512 / SST37VF010 / SST37VF020 / SST37VF040
Data Sheet
TABLE 3: O
PERATION
M
ODES
S
ELECTION
Mode
Read
Output Disable
Standby
Chip-Erase
Byte-Program
Program/Erase Inhibit
Product Identification
CE#
V
IL
V
IL
V
IH
V
IL
V
IL
X
X
V
IL
WE#
V
IH
X
X
V
IL
V
IL
V
IH
X
V
IH
A
9
A
IN
X
X
V
H
A
IN
X
X
V
H
OE#
V
IL
V
IH
X
V
H
V
H
X
V
IL
or V
IH
V
IL
DQ
D
OUT
High Z
High Z
High Z
D
IN
High Z
High Z/ D
OUT
Manufacturer’s ID (BFH)
Device ID
1
Address
A
IN
A
IN
X
X
A
IN
X
X
A
MS2
- A
1
= V
IL
, A
0
= V
IL
A
MS2
- A
1
= V
IL
, A
0
= V
IH
T3.1 397
1. Device ID = C4H for SST37VF512, C5H for SST37VF020, C6H for SST37VF020, and C2H for SST37VF040
2. A
MS
= Most significant address
A
MS
= A
15
for SST37VF512, A
16
for SST37VF010, A
17
for SST37VF020, and A
18
for SST37VF040
Note:
X = V
IL
or V
IH
(or V
H
in case of OE# and A
9
)
V
H
= 12V±5%
Absolute Maximum Stress Ratings
(Applied conditions greater than those listed under “Absolute Maximum
Stress Ratings” may cause permanent damage to the device. This is a stress rating only and functional operation
of the device at these conditions or conditions greater than those defined in the operational sections of this data
sheet is not implied. Exposure to absolute maximum stress rating conditions may affect device reliability.)
Temperature Under Bias . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -55°C to +125°C
Storage Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -65°C to +150°C
D. C. Voltage on Any Pin to Ground Potential . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.5V to V
DD
+ 0.5V
Transient Voltage (<20 ns) on Any Pin to Ground Potential . . . . . . . . . . . . . . . . . . . . . . . . . . . . -1.0V to V
DD
+ 1.0V
Voltage on A
9
Pin to Ground Potential . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.5V to 13.2V
Package Power Dissipation Capability (Ta = 25°C) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.0W
Through Hold Lead Soldering Temperature (10 Seconds) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 300°C
Surface Mount Lead Soldering Temperature (3 Seconds) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 240°C
Output Short Circuit Current
1
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50 mA
1. Outputs shorted for no more than one second. No more than one output shorted at a time.
O
PERATING
R
ANGE
Range
Commercial
Ambient Temp
0°C to +70°C
V
DD
2.7-3.6V
AC C
ONDITIONS
OF
T
EST
Input Rise/Fall Time . . . . . . . . . . . . . . . 5 ns
Output Load . . . . . . . . . . . . . . . . . . . . . C
L
= 100 pF
See Figures 7 and 8
©2001 Silicon Storage Technology, Inc.
S71151-02-000 5/01
397
5
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