A29001/290011 Series
128K X 8 Bit CMOS 5.0 Volt-only,
Boot Sector Flash Memory
Features
5.0V
±
10% for read and write operations
Access times:
- 55/70/90 (max.)
Current:
- 20 mA typical active read current
- 30 mA typical program/erase current
- 1
μA
typical CMOS standby
Flexible sector architecture
-
8 Kbyte/ 4 KbyteX2/ 16 Kbyte/ 32 KbyteX3 sectors
-
Any combination of sectors can be erased
-
Supports full chip erase
-
Sector protection:
A hardware method of protecting sectors to prevent
any inadvertent program or erase operations within
that sector
Top or bottom boot block configurations available
Embedded Erase Algorithms
- Embedded Erase algorithm will automatically erase
the entire chip or any combination of designated
sectors and verify the erased sectors
- Embedded Program algorithm automatically writes
and verifies bytes at specified addresses
Minimum 100,000 program/erase cycles per sector
20-year data retention at 125°C
- Reliable operation for the life of the system
Compatible with JEDEC-standards
- Pinout and software compatible with single-power-
supply Flash memory standard
-
Superior inadvertent write protection
Data
Polling and toggle bits
-
Provides a software method of detecting completion
of program or erase operations
Erase Suspend/Erase Resume
-
Suspends a sector erase operation to read data
from, or program data to, a non-erasing sector, then
resumes the erase operation
Hardware reset pin (
RESET
)
-
Hardware method to reset the device to reading array
data (not available on A290011)
Industrial operating temperature range: -40°C to +85°C
for – U
Package options: 32-pin P-DIP, PLCC, TSOP or
sTSOP (Forward type)
General Description
The A29001 is a 5.0 volt-only Flash memory organized as
131,072 bytes of 8 bits each. The A29001 offers the
RESET
function, but it is not available on A290011. The
128 Kbytes of data are further divided into seven sectors for
flexible sector erase capability. The 8 bits of data appear on
I/O
0
- I/O
7
while the addresses are input on A0 to A16. The
A29001 is offered in 32-pin PLCC, TSOP, sTSOP and PDIP
packages. This device is designed to be programmed in-
system with the standard system 5.0 volt VCC supply.
Additional 12.0 volt VPP is not required for in-system write
or erase operations. However, the A29001 can also be
programmed in standard EPROM programmers.
The A29001 has the first toggle bit, I/O
6
, which indicates
whether an Embedded Program or Erase is in progress, or it
is in the Erase Suspend. Besides the I/O
6
toggle bit, the
A29001 has a second toggle bit, I/O
2
, to indicate whether
the addressed sector is being selected for erase. The
A29001 also offers the ability to program in the Erase
Suspend mode. The standard A29001 offers access times
of 55, 70 and 90 ns allowing high-speed microprocessors to
operate without wait states. To eliminate bus contention the
device has separate chip enable (
CE
), write enable (
WE
)
and output enable (
OE
) controls.
The device requires only a single 5.0 volt power supply for
both read and write functions. Internally generated and
regulated voltages are provided for the program and erase
operations.
The A29001 is entirely software command set compatible
with the JEDEC single-power-supply Flash standard.
Commands are written to the command register using
standard microprocessor write timings. Register contents
serve as input to an internal state-machine that controls the
erase and programming circuitry. Write cycles also
internally latch addresses and data needed for the
programming and erase operations. Reading data out of
the device is similar to reading from other Flash or EPROM
devices.
Device programming occurs by writing the proper program
command sequence. This initiates the Embedded Program
algorithm - an internal algorithm that automatically times
the program pulse widths and verifies proper program
margin.
Device erasure occurs by executing the proper erase
command sequence. This initiates the Embedded Erase
algorithm - an internal algorithm that automatically
preprograms the array (if it is not already programmed)
before executing the erase operation. During erase, the
device automatically times the erase pulse widths and
verifies proper erase margin.
The host system can detect whether a program or erase
operation is complete by reading the I/O
7
(
Data
Polling)
and I/O
6
(toggle) status bits. After a program or erase
cycle has been completed, the device is ready to read
array data or accept another command.
(May, 2012, Version 1.7)
1
AMIC Technology, Corp.
A29001/A290011 Series
The sector erase architecture allows memory sectors to
be erased and reprogrammed without affecting the data
contents of other sectors. The A29001 is fully erased
when shipped from the factory.
The hardware sector protection feature disables
operations for both program and erase in any
combination of the sectors of memory. This can be
achieved via programming equipment.
The Erase Suspend feature enables the user to put erase
on hold for any period of time to read data from, or
program data to, any other sector that is not selected for
erasure. True background erase can thus be achieved.
Power consumption is greatly reduced when the device is
placed in the standby mode.
The hardware
RESET
pin terminates any operation in
progress and resets the internal state machine to reading
array data (This feature is not available on the A290011).
Pin Configurations
DIP
PLCC
NC on A290011
1
2
3
4
VCC
WE
NC
4
3
2
1
32
RESET
NC on A290011
A15
VCC
A12
A16
WE
31
A16
A15
A12
A7
A6
A5
A4
A3
A2
A1
A0
I/O
0
I/O
1
I/O
2
VSS
31
30
29
A14
A13
A8
A9
A11
OE
A10
CE
I/O
7
I/O
6
I/O
5
I/O
4
A7
A6
A5
A4
A3
A2
A1
A0
I/O
0
5
6
7
8
9
10
11
12
13
30
NC
RESET
32
A29001/A290011
5
6
7
8
9
10
11
12
13
14
15
16
28
27
26
25
24
23
22
21
20
19
18
17
29
28
27
A14
A13
A8
A9
A11
OE
A10
CE
I/O
7
A29001L/
A290011L
26
25
24
23
22
21
14
15
16
17
18
19
I/O
5
VSS
I/O
1
I/O
2
I/O
3
I/O
4
I/O
3
TSOP/sTSOP (Forward type)
A11
A9
A8
A13
A14
NC
WE
VCC
RESET
A16
A15
NC on A290011 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
OE
A10
CE
I/O
7
I/O
6
I/O
5
I/O
4
I/O
3
VSS
I/O
2
I/O
1
I/O
0
A0
A1
A2
A3
A29001V/A290011V
A29001X/A290011X
A29001Y/A290011Y
(May, 2012, Version 1.7)
2
AMIC Technology, Corp.
I/O
6
20
A29001/A290011 Series
Absolute Maximum Ratings*
Ambient Operating Temperature . . . . .-55°C to + 125°C
Storage Temperature . . . . . . . . . . . . . . .-65°C to + 150°C
Ground to VCC . . . . . . . . . . . . . . . . . . . .. . . -2.0V to 7.0V
Output Voltage (Note 1) . . . . . . . . . . . . ……-2.0V to 7.0V
A9,
OE
&
RESET
(Note 2) . . . . . . . . . . . -2.0V to 12.5V
All other pins (Note 1) . . . . . . . . . . . . . . . . ..-2.0V to 7.0V
Output Short Circuit Current (Note 3) . .. . . . . . . . 200mA
*Comments
Stresses above those listed under "Absolute Maximum
Ratings" may cause permanent damage to this device.
These are stress ratings only. Functional operation of
this device at these or any other conditions above
those indicated in the operational sections of these
specification is not implied or intended. Exposure to
the absolute maximum rating conditions for extended
periods may affect device reliability.
Notes:
1. Minimum DC voltage on input or I/O pins is -0.5V.
During voltage transitions, inputs may undershoot
VSS to -2.0V for periods of up to 20ns. Maximum DC
voltage on output and I/O pins is VCC +0.5V. During
voltage transitions, outputs may overshoot to VCC
+2.0V for periods up to 20ns.
2. Minimum DC input voltage on A9 pins is -0.5V. During
voltage transitions, A9,
OE
and
RESET
may
overshoot VSS to -2.0V for periods of up to 20ns.
Maximum DC input voltage on A9 and
OE
is +12.5V
which may overshoot to 13.5V for periods up to 20ns.
(
RESET
is N/A on A290011)
3. No more than one output is shorted at a time.
Duration of the short circuit should not be greater than
one second.
Operating Ranges
Commercial (C) Devices
Ambient Temperature (T
A
) . . . . . . . . . . . . . .0°C to +70°C
Extended Range Devices
Ambient Temperature (T
A
) . . . . . . . . . . . . -40°C to +85°C
VCC Supply Voltages
VCC for
±
10% devices . . . . . . . . . . . . . . +4.5V to +5.5V
Operating ranges define those limits between which the
functionally of the device is guaranteed.
Device Bus Operations
This section describes the requirements and use of the
device bus operations, which are initiated through the
internal command register. The command register itself
does not occupy any addressable memory location. The
register is composed of latches that store the commands,
along with the address and data information needed to
execute the command. The contents of the register serve
as inputs to the internal state machine. The state
machine outputs dictate the function of the device. The
appropriate device bus operations table lists the inputs
and control levels required, and the resulting output. The
following subsections describe each of these operations
in further detail.
Table 1. A29001/A290011 Device Bus Operations
Operation
CE
L
L
VCC
±
0.5 V
H
L
X
X
OE
L
H
X
X
H
X
X
WE
H
L
X
X
H
X
X
RESET
(N/A A290011)
H
H
VCC
±
0.5 V
VCC
±
0.5 V
H
L
V
ID
A0 – A16
I/O
0
- I/O
7
Read
Write
CMOS Standby
TTL Standby
Output Disable
Reset
Temporary Sector Unprotect (Note)
A
IN
A
IN
X
X
X
X
X
D
OUT
D
IN
High-Z
High-Z
High-Z
High-Z
X
Legend:
L = Logic Low = V
IL
, H = Logic High = V
IH
, V
ID
= 12.0
±
0.5V, X = Don't Care, D
IN
= Data In, D
OUT
= Data Out, A
IN
= Address In
Note: 1. See the "Sector Protection/Unprotection" section and Temporary Sector Unprotect for more information.
2. This function is not available on A290011.
(May, 2012, Version 1.7)
4
AMIC Technology, Corp.
TI Technology Forum
京公网安备 11010802033920号
EEWORLD
