The 29EE010/29LE010/29VE010 are 128K x 8 CMOS
page mode EEPROMs 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 29EE010/
29LE010/29VE010 write with a single power supply.
Internal Erase/Program is transparent to the user. The
29EE010/29LE010/29VE010 conform to JEDEC standard pinouts for byte-wide memories.
Featuring high performance page write, the 29EE010/
29LE010/29VE010 provide a typical byte-write time of
39 µsec. The entire memory, i.e., 128K bytes, can be
written page by page in as little as 5 seconds, when using
interface features such as Toggle Bit or Data# Polling to
indicate the completion of a write cycle. To protect
against inadvertent write, the 29EE010/29LE010/
29VE010 have on-chip hardware and software data
protection schemes. Designed, manufactured, and
tested for a wide spectrum of applications, the 29EE010/
29LE010/29VE010 are offered with a guaranteed pagewrite endurance of 104 or 103 cycles. Data retention is
rated at greater than 100 years.
The 29EE010/29LE010/29VE010 are suited for applications that require convenient and economical updating of
program, configuration, or data memory. For all system
applications, the 29EE010/29LE010/29VE010 significantly improve performance and reliability, while lowering power consumption, when compared with floppy disk
or EPROM approaches. The 29EE010/29LE010/
29VE010 improve flexibility while lowering the cost for
program, data, and configuration storage applications.
To meet high density, surface mount requirements, the
29EE010/29LE010/29VE010 are offered in 32-pin
TSOP and 32-lead PLCC packages. A 600-mil, 32-pin
PDIP package is also available. See Figures 1 and 2 for
pinouts.
Device Operation
The SST page mode EEPROM offers in-circuit electrical
write capability. The 29EE010/29LE010/29VE010 does
not require separate erase and program operations. The
internally timed write cycle executes both erase and
program transparently to the user. The 29EE010/
29LE010/29VE010 have industry standard optional
Software Data Protection, which SST recommends always to be enabled. The 29EE010/29LE010/29VE010
are compatible with industry standard EEPROM pinouts
and functionality.
Read
The Read operations of the 29EE010/29LE010/
29VE010 are controlled by CE# and OE#, both have to
be low for the system to obtain data from the outputs.
CE# is used for device selection. 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).
Write
The Page Write to the SST29EE010/29LE010/29VE010
should always use the JEDEC Standard Software Data
Protection (SDP) 3-byte command sequence. The
29EE010/29LE010/29VE010 contain the optional
JEDEC approved Software Data Protection scheme.
SST recommends that SDP always be enabled, thus, the
description of the Write operations will be given using the
SDP enabled format. The 3-byte SDP Enable and SDP
Write commands are identical; therefore, any time a
SDP Write command is issued, software data protection is automatically assured. The first time the 3-byte
SDP command is given, the device becomes SDP enabled. Subsequent issuance of the same command
bypasses the data protection for the page being written.
At the end of the desired page write, the entire device
remains protected. For additional descriptions, please
see the application notes on “The Proper Use of JEDEC
Standard Software Data Protection” and “Protecting
Against Unintentional Writes When Using Single Power
Supply Flash Memories” in this data book.
The Write operation consists of three steps. Step 1 is the
three byte load sequence for Software Data Protection.
Step 2 is the byte-load cycle to a page buffer of the
29EE010/29LE010/29VE010. Steps 1 and 2 use the
same timing for both operations. Step 3 is an internally
controlled write cycle for writing the data loaded in the
page buffer into the memory array for nonvolatile storage. During both the SDP 3-byte load sequence and the
byte-load cycle, the addresses are latched by the falling
edge of either CE# or WE#, whichever occurs last. The
data is latched by the rising edge of either CE# or WE#,
whichever occurs first. The internal write cycle is initiated
by the T
timer after the rising edge of WE# or CE#,
BLCO
whichever occurs first. The write cycle, once initiated, will
continue to completion, typically within 5 ms. See Figures 4 and 5 for WE# and CE# controlled page write cycle
timing diagrams and Figures 14 and 16 for flowcharts.
The Write operation has three functional cycles: the
Software Data Protection load sequence, the page load
cycle, and the internal write cycle. The Software Data
Protection consists of a specific three byte load sequence that allows writing to the selected page and will
leave the 29EE010/29LE010/29VE010 protected at the
end of the page write. The page load cycle consists of
loading 1 to 128 bytes of data into the page buffer. The
internal write cycle consists of the T
time-out and the
BLCO
write timer operation. During the Write operation, the only
valid reads are Data# Polling and Toggle Bit.
The Page-Write operation allows the loading of up to 128
bytes of data into the page buffer of the 29EE010/
29LE010/29VE010 before the initiation of the internal
write cycle. During the internal write cycle, all the data in
the page buffer is written simultaneously into the memory
array. Hence, the page-write feature of 29EE010/
29LE010/29VE010 allow the entire memory to be written
in as little as 5 seconds. During the internal write cycle,
the host is free to perform additional tasks, such as to
fetch data from other locations in the system to set up the
write to the next page. In each Page-Write operation, all
the bytes that are loaded into the page buffer must have
the same page address, i.e. A7 through A16. Any byte not
loaded with user data will be written to FF.
See Figures 4 and 5 for the page-write cycle timing
diagrams. If after the completion of the 3-byte SDP load
sequence or the initial byte-load cycle, the host loads a
second byte into the page buffer within a byte-load cycle
time (T
) of 100 µs, the 29EE010/29LE010/29VE010
BLC
will stay in the page load cycle. Additional bytes are then
loaded consecutively. The page load cycle will be terminated if no additional byte is loaded into the page buffer
within 200 µs (T
) from the last byte-load cycle, i.e.,
BLCO
no subsequent WE# or CE# high-to-low transition after
the last rising edge of WE# or CE#. Data in the page
buffer can be changed by a subsequent byte-load cycle.
The page load period can continue indefinitely, as long
as the host continues to load the device within the byteload cycle time of 100 µs. The page to be loaded is
determined by the page address of the last byte loaded.
Software Chip-Erase
The 29EE010/29LE010/29VE010 provide a Chip-Erase
operation, which allows the user to simultaneously clear
the entire memory array to the “1” state. This is useful
when the entire device must be quickly erased.
The Software Chip-Erase operation is initiated by using
a specific six byte-load sequence. After the load sequence, the device enters into an internally timed cycle
similar to the write cycle. During the erase operation, the
only valid read is Toggle Bit. See Table 4 for the load
sequence, Figure 9 for timing diagram, and Figure 18 for
the flowchart.
The 29EE010/29LE010/29VE010 provide two software
means to detect the completion of a write cycle, in order
to optimize the system write cycle time. The software
detection includes two status bits: Data# Polling (DQ7)
and Toggle Bit (DQ6). The end of write detection mode is
enabled after the rising WE# or CE# whichever occurs
first, which initiates the internal write cycle.
The actual completion of the nonvolatile write is asynchronous 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 conflict with either DQ7 or DQ6. 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 rejection is valid.
Data# Polling (DQ7)
When the 29EE010/29LE010/29VE010 are in the internal write cycle, any attempt to read DQ7 of the last byte
loaded during the byte-load cycle will receive the complement of the true data. Once the write cycle is completed, DQ7 will show true data. The device is then ready
for the next operation. See Figure 6 for Data# Polling
timing diagram and Figure 15 for a flowchart.
Toggle Bit (DQ6)
During the internal write cycle, any consecutive attempts
to read DQ6 will produce alternating 0’s and 1’s, i.e.
toggling between 0 and 1. When the write cycle is
completed, the toggling will stop. The device is then
ready for the next operation. See Figure 7 for Toggle Bit
timing diagram and Figure 15 for a flowchart. The initial
read of the Toggle Bit will typically be a “1”.
Data Protection
The 29EE010/29LE010/29VE010 provide both hardware and software 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.
VCC Power Up/Down Detection: The write operation is
inhibited when VCC is less than 2.5V.
Write Inhibit Mode: Forcing OE# low, CE# high, or WE#
high will inhibit the write operation. This prevents inadvertent writes during power-up or power-down.
Software Data Protection (SDP)
The 29EE010/29LE010/29VE010 provide the JEDEC
approved optional software data protection scheme for
all data alteration operations, i.e., Write and Chip erase.
With this scheme, any write operation requires the inclusion of a series of three byte-load operations to precede
the data loading operation. The three byte-load sequence is used to initiate the write cycle, providing
optimal protection from inadvertent write operations,
e.g., during the system power-up or power-down. The
29EE010/29LE010/29VE010 are shipped with the software data protection disabled.
The software protection scheme can be enabled by
applying a three-byte sequence to the device, during a
page-load cycle (Figures 4 and 5). The device will then
be automatically set into the data protect mode. Any
subsequent write operation will require the preceding
three-byte sequence. See Table 4 for the specific software command codes and Figures 4 and 5 for the timing
diagrams. To set the device into the unprotected mode,
a six-byte sequence is required. See Table 4 for the
specific codes and Figure 8 for the timing diagram. If a
write is attempted while SDP is enabled the device will be
in a non-accessible state for ~ 300 µs. SST recommends
Software Data Protection always be enabled. See Figure
16 for flowcharts.
The 29EE010/29LE010/29VE010 Software Data Protection is a global command, protecting (or unprotecting)
all pages in the entire memory array once enabled (or
disabled). Therefore using SDP for a single page write
will enable SDP for the entire array. Single pages by
themselves cannot be SDP enabled or disabled.
Single power supply reprogrammable nonvolatile
memories may be unintentionally altered. SST strongly
recommends that Software Data Protection (SDP) always be enabled. The 29EE010/29LE010/29VE010
should be programmed using the SDP command sequence. SST recommends the SDP Disable Command
Sequence not be issued to the device prior to writing.
Please refer to the following Application Notes located at
the back of this databook for more information on using
SDP:
•Protecting Against Unintentional Writes When Using
Single Power Supply Flash Memories
•The Proper Use of JEDEC Standard Software Data
Protection
Product Identification
The product identification mode identifies the device as
the 29EE010/29LE010/29VE010 and manufacturer as
SST. This mode may be accessed by hardware or
software operations. The hardware operation is typically
used by a programmer to identify the correct algorithm
for the 29EE010/29LE010/29VE010. Users may wish to
use the software product identification operation to identify the part (i.e. using the device code) when using
multiple manufacturers in the same socket. For details,
see Table 3 for hardware operation or Table 4 for
software operation, Figure 10 for the software ID entry
and read timing diagram and Figure 17 for the ID entry
command sequence flowchart. The manufacturer and
device codes are the same for both operations.
TABLE 1: PRODUCT IDENTIFICATION TABLE
ByteData
Manufacturer’s Code0000 HBF H
29EE010 Device Code0001 H07 H
29LE010 Device Code0001 H08 H
29VE010 Device Code0001 H08 H
304 PGM T1.1
Product Identification Mode Exit
In order to return to the standard read mode, the Software Product Identification mode must be exited. Exiting
is accomplished by issuing the Software ID Exit (reset)
operation, which returns the device to the read operation.
The Reset operation may also be used to reset the
device to the read mode after an inadvertent transient
condition that apparently causes the device to behave
abnormally, e.g. not read correctly. See Table 4 for
software command codes, Figure 11 for timing waveform and Figure 17 for a flowchart.
Row Address InputsTo provide memory addresses. Row addresses define a page for a
write cycle.
A6-A
0
Column AddressColumn Addresses are toggled to load page data.
Inputs
DQ7-DQ
Data Input/outputTo output data during read cycles and receive input data during write
0
cycles. Data is internally latched during a write cycle. The outputs are in
tri-state when OE# or CE# is high.
CE#Chip EnableTo activate the device when CE# is low.
OE#Output EnableTo gate the data output buffers.
WE#Write EnableTo control the write operations
VccPower SupplyTo provide 5-volt supply (± 10%) for the 29EE010, 3-volt supply (3.0-3.6V)
for the 29LE010 and 2.7-volt supply (2.7-3.6V) for the 29VE010
VssGround
NCNo ConnectionUnconnected pins.
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 VCC+ 0.5V
Transient Voltage (<20 ns) on Any Pin to Ground Potential......................................................... -1.0V to VCC+ 1.0V
Voltage on A9 Pin to Ground Potential ................................................................................................ -0.5V to 14.0V
Package Power Dissipation Capability (Ta = 25°C) ...........................................................................................1.0W
Through Hole Lead Soldering Temperature (10 Seconds) .............................................................................. 300°C
Surface Mount Lead Soldering Temperature (3 Seconds)............................................................................... 240°C
Output Short Circuit Current
(1)
Note:
Outputs shorted for no more than one second. No more than one output shorted at a time.
(1)
....................................................................................................................... 100 mA
1
2
3
4
5
29EE010 OPERATING RANGE
RangeAmbient TempV
Commercial0°C to +70°C5V±10%
Industrial-40°C to +85°C5V±10%
29LE010 OPERATING RANGE
RangeAmbient TempV
Commercial0°C to +70°C3.0V to 3.6V
Industrial-40°C to +85°C3.0V to 3.6V
29VE010 OPERATING RANGE
RangeAmbient TempV
Commercial0°C to +70°C2.7V to 3.6V
Industrial-40°C to +85°C2.7V to 3.6V
CC
CC
CC
AC CONDITIONSOF TEST
Input Rise/Fall Time......... 10 ns
Output Load..................... 1 TTL Gate and CL = 100 pF
TABLE 5: 29EE010 DC OPERATING CHARACTERISTICS VCC = 5V±10%
Limits
Symbol ParameterMinMaxUnitsTest Conditions
I
I
I
I
I
V
V
V
V
V
I
CC
SB1
SB2
LI
LO
IL
IH
OL
OH
H
H
Power Supply CurrentCE#=OE#=V
WE#=V
IL,
Read30mAAddress input = VIL/VIH, at f=1/TRC Min.,
VCC=VCC Max
Write50mACE#=WE#=V
IL,
Standby VCC Current3mACE#=OE#=WE#=V
(TTL input)
Standby V
Current50µACE#=OE#=WE#=VCC -0.3V.
CC
(CMOS input) VCC = VCC Max.
Input Leakage Current1µAVIN =GND to VCC, V
Output Leakage Current1 0µAV
=GND to VCC, VCC = VCC Max.
OUT
Input Low Voltage0.8VVCC = VCC Max.
Input High Voltage2.0VVCC = VCC Max.
Output Low Voltage0.4VIOL = 2.1 mA, V
Output High Voltage2.4VIOH = -400µA, V
Supervoltage for A
9
11.612.4VCE# = OE# =VIL, WE# = V
Supervoltage Current100µACE# = OE# = VIL, WE# = VIH,
for A
Input Leakage Current1µAVIN =GND to VCC, V
Output Leakage Current10µAV
=GND to VCC, VCC = VCC Max.
OUT
Input Low Voltage0.8VVCC = VCC Max.
Input High Voltage2.0VVCC = VCC Max.
Output Low Voltage0.4VIOL = 100 µA, V
Output High Voltage2.4VIOH = -100 µA, V
Supervoltage for A
9
11.612.4VCE# = OE# =VIL, WE# = V
Supervoltage Current100µACE# = OE# = VIL, WE# = VIH,
for A
Read Cycle time90120ns
Chip Enable Access Time90120ns
Address Access Time90120ns
Output Enable Access Time40 50ns
CE# Low to Active Output00ns
OE# Low to Active Output00ns
CE# High to High-Z Output30 30ns
OE# High to High-Z Output3 0 30ns
Output Hold from Address00ns
Change
304 PGM T10.1
TABLE 11: 29LE010 READ CYCLE TIMING PARAMETERS
29LE010-150 29LE010-200
SymbolParameterMinMaxMinMaxUnits
T
T
T
T
T
T
T
T
T
RC
CE
AA
OE
CLZ
OLZ
CHZ
OHZ
OH
(1)
(1)
(1)
(1)
(1)
Read Cycle time150200ns
Chip Enable Access Time150200ns
Address Access Time150200ns
Output Enable Access Time 60100ns
CE# Low to Active Output00ns
OE# Low to Active Output00ns
CE# High to High-Z Output 30 50ns
OE# High to High-Z Output 30 50ns
Output Hold from Address Change00ns
304 PGM T11.0
TABLE 12: 29VE010 READ CYCLE TIMING PARAMETERS
29VE010-200 29VE010-250
SymbolParameterMinMaxMinMaxUnits
T
T
T
T
T
T
T
T
T
RC
CE
AA
OE
CLZ
OLZ
CHZ
OHZ
OH
(1)
(1)
(1)
(1)
(1)
Read Cycle time200250ns
Chip Enable Access Time200250ns
Address Access Time200250ns
Output Enable Access Time100120ns
CE# Low to Active Output00ns
OE# Low to Active Output00ns
CE# High to High-Z Output 50 50ns
OE# High to High-Z Output 50 50ns
Output Hold from Address Change00ns
This parameter is measured only for initial qualification and after the design or process change that could affect this parameter.
Write Cycle (erase and program)1010ms
Address Setup Time00ns
Address Hold Time5070ns
WE# and CE# Setup Time00ns
WE# and CE# Hold Time00ns
OE# High Setup Time00ns
OE# High Hold Time00ns
CE# Pulse Width70120ns
WE# Pulse Width70120ns
Data Setup Time3550ns
Data Hold Time00ns
Byte Load Cycle Time0.051000.05100µs
Byte Load Cycle Time200200µs
Software ID Access and Exit Time1010µs
Software Chip Erase2020ms