FLASH
Austin Semiconductor, Inc.
128K x 8 FLASH
UNIFORM SECTOR 5.0V FLASH MEMORY
AVAILABLE AS MILITARY
SPECIFICATIONS
• MIL-STD-883
• SMD 5962-96690
NC
A16
A15
A12
A7
A6
A5
A4
A3
A2
A1
A0
DQ0
DQ1
DQ2
V
SS
AS29F010
PIN ASSIGNMENT
(Top View)
32-PIN Ceramic DIP (CW)
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
V
CC
WE\
NC
A14
A13
A8
A9
A11
OE\
A10
CE\
DQ7
DQ6
DQ5
DQ4
DQ3
FEATURES
• Single 5.0V ±10% power supply operation
• Low power consumption:
!
12 mA typical active read current
!
30 mA typical program/erase current
!
<1 µA typical standby current
• Flexible sector architecture
!
Eight 16Kbyte sectors
!
Any combination of sectors can be erased
!
Full chip erase
• Sector protection
!
Hardware-based feature that disables/reenables program
and erase operations in any combination of sectors
!
Sector protection/unprotection can be implemented
using standard PROM programming equipment
• Embedded Algorithms
!
Embedded Erase algorithm automatically pre-programs
and erases the chip or any combination of designated
sectors
!
Embedded Program algorithm automatically programs
and verifies data at specified address
• Erase Suspend/Resume
!
Supports reading data from a sector not being erased
• Minimum 1 million erase cycles guaranteed per sector
• Compatible with JEDEC standards
!
Pinout and software compatible with single-power-
supply FLASH
!
Superior inadvertent write protection
• Data\ Polling and Toggle Bits
!
Provides a software method of detecting program or
erase cycle completion
OPTIONS
• Timing
50ns*
60ns
70ns
90ns
120ns
150ns
• Package
Ceramic DIP (600 mil)
MARKING
-5
-6
-7
-9
-12
-15
CW
For more products and information
please visit our web site at
www.austinsemiconductor.com
• Temperature
Industrial Temperature (-40°C to +85°C) IT
Military Temperature (-55°C to +125°C) XT
883C Processing (-55°C to +125°C)
883C
QML Processing (-55°C to +125°C)
Q
NOTES:
only.
*50ns (-5) option available with IT, XT, and 883C options
AS29F010
Rev. 0.3 10/02
Austin Semiconductor, Inc. reserves the right to change products or specifications without notice.
1
FLASH
Austin Semiconductor, Inc.
GENERAL DESCRIPTION
The AS29F010 is a 1Mbit, 5.0 Volt-only FLASH memory
organized as 131,072 bytes. The AS29F010 is offered in a 32-pin
CDIP package. The byte-wide data appears on DQ0-DQ7. The
device is designed to be programmed in-system with the
standard system 5.0 Volt V
CC
supply. A 12.0 volt V
PP
is not
required for program or erase operations. The device can also
be programmed or erased in standard EPROM programmers.
This device is manufactured using 0.32 µm process
technology. It is available with access times of 50, 60, 70, 90,
120, and 150ns, 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 device is entirely 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 executing the program
command sequence. This invokes the Embedded Program
algorithm -- an internal algorithm that automatically times the
program pulse widths and verifies proper cell margin.
Device erasure occurs by executing the erase command
sequence. This invokes 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 cell margin.
The host system can detect whether a program or erase
operation is complete by reading the DQ7 (Data\Polling) and
DQ6 (toggle) status bits. After a program or erase cycle has
been completed, the device is ready to read array data or accept
another command.
The sector erase architecture allows memory sectors to be
erased and reprogrammed without affecting the data contents
of other sectors. The device is erased when shipped from the
factory.
The hardware data protection measures include a low V
CC
detector that automatically inhibits write operations during
power transitions. The hardware sector protection feature
disables both program and erase operations in any
combination of the sectors of memory, and is implemented
using standard EPROM programmers.
The system can place the device into the standby mode.
Power consumption is greatly reduced in this mode. The
device electrically erases all bits within a sector simultaneously
via Fowler-Nordheim tunneling. The bytes are programmed
one byte at a time using the EPROM programming mechanism
of hot electron injection.
AS29F010
PIN CONFIGURATION
PIN
A0 - A16
DQ0 - DQ7
CE\
OE\
WE\
V
CC
V
SS
NC
DESCRIPTION
17 Addresses
8 Data Inputs/Outputs
Chip Enable
Output Enable
Write Enable
+5 Vold Single Power Supply
Device Ground
No Connect
LOGIC SYMBOL
AS29F010
Rev. 0.3 10/02
Austin Semiconductor, Inc. reserves the right to change products or specifications without notice.
2
FLASH
Austin Semiconductor, Inc.
FUNCTIONAL BLOCK DIAGRAM
AS29F010
AS29F010
Rev. 0.3 10/02
Austin Semiconductor, Inc. reserves the right to change products or specifications without notice.
3
FLASH
Austin Semiconductor, Inc.
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.
AS29F010
Writing Commands/Command Sequences
To write a command or command sequence (which includes
programming data to the device and erasing sectors of memory),
the system must drive WE\ and CE\ to V
IL
, and OE\ to V
IH
.
An erase operation can erase one sector, multiple sectors,
or the entire device. The Sector Address Tables indicate the
address space that each sector occupies. A “sector address”
consists of the address bits required to uniquely select a
sector. See the “Command Definitions” section for details on
erasing a sector or the entire chip.
After the system writes the autoselect command sequence,
the device enters the autoselect mode. The system can then
read autoselect codes from the internal register (which is
separate from the memory array) on DQ7 - DQ0. Standard read
cycle timings apply in this mode. Refer to the “Autoselect
Mode” and “Autoselect Command Sequence” sections for more
information.
I
CC2
in the DC Characteristics table represents the active
current specification for the write mode. The “AC
Characteristics” section contains timing specification tables
and timing diagrams for write operations.
Requirements for Reading Array Data
To read array data from the outputs, the system must drive
the CE\ and OE\ pins to V
IL
. CE\ is the power control and
selects the device. OE\ is the output control and gates array
data to the output pins. WE\ should remain at V
IH
.
The internal state machine is set for reading array data
upon device power-up, or after a hardware reset. This ensures
that no spurious alteration of the memory content occurs
during the power transition. No command is necessary in this
mode to obtain array data. Standard microprocessor read cycles
that assert valid addresses on the device address inputs
produce valid data on the device data outputs. The device
remains enabled for read access until the command register
contents are altered.
See “Reading Array Data” for more information. Refer to
the AC Read Operations table for timing specifications and to
the Read Operations Timings diagram for the timing waveforms.
ICC1 in the DC Characteristics table represents the active
current specification for reading array data.
Program and Erase Operation Status
During an erase or program operation, the system may
check the status of the operation by reading the status bits on
DQ7 - DQ0. Standard read cycle timings and I
CC
read
specifications apply. Refer to “Write Operation Status” for
more information, and to each AC Characteristics section in the
appropriate data sheet for timing diagrams.
TABLE 1: DEVICE BUS OPERATIONS
OPERATION
Read
Write
Standby
Output Disable
Hardware Reset
CE\
L
L
V
CC
± 0.5V
L
X
OE\
L
H
X
H
X
WE\
H
L
X
H
X
Addresses
1
DQ0 - DQ7
A
IN
A
IN
X
X
X
D
OUT
D
IN
High-Z
High-Z
High-Z
NOTES:
1. Addresses are A16:A0.
2. The sector protect and sector unprotect functions must be implemented via programming equipment. See the “Sector Protection/
Unprotection” section.
AS29F010
Rev. 0.3 10/02
Austin Semiconductor, Inc. reserves the right to change products or specifications without notice.
4
FLASH
Austin Semiconductor, Inc.
Standby Mode
When the system is not reading or writing to the device, it
can place the device in the standby mode. In this mode, current
consumption is greatly reduced, and the outputs are placed in
the high impedance state, independent of the OE\ input.
The device enters the CMOS standby mode when the CE\
pin is held at V
CC
± 0.5V. (Note that this is a more restricted
voltage range than V
IH
.) The device enters the TTL standby
more when CE\ is held at V
IH
. The device requires the standard
access time (t
CE
) before it is ready to read data.
If the device is deselected during erasure or programming,
the device draws active current until the operation is completed.
I
CC3
in the DC Characteristics table represents the standby
current specification.
AS29F010
address bits that are don’t care. When all necessary bits have
been set as required, the programming equipment may then
read the corresponding identifier code on DQ7 - DQ0
To access the autoselect codes in-system, the host system
can issue the autoselect command via the command register, as
shown in the Command Definitions table. This method does
not require V
ID
. See “Command Definitions” for details on
using the autoselect mode.
Sector Protection/Unprotection
The hardware sector protection feature disables both
program and erase operations in any sector. The hardware
sector unprotection feature re-enables both program and erase
operations in previously protected sectors.
Sector protection/unprotection must be implemented
using programming equipment. The procedure requires a high
voltage (V
ID
) on address pin A9 and the control pins. The
device is shipped with all sectors unprotected. It is possible to
determine whether a sector is protected or unprotected. See
“Autoselect Mode” for details.
Output Disable Mode
When the OE\ input is at V
IH
, output from the device is
disabled. The output pins are placed in the high impedance
state.
Autoselect Mode
The autoselect mode provides manufacturer and device
identification, and sector protection verification, through
identifier codes output on DQ7 - DQ0. This mode is primarily
intended for programming equipment to automatically match a
device to be programmed with its corresponding programming
algorithm. However, the autoselect codes can also be accessed
in-system through the command register.
When using programming equipment, the autoselect mode
requires V
ID
on address pin A9. Address pins A6, A1, and A0
must be as shown in the Autoselect Codes (High Voltage
Method) table. In addition, when verifying sector protection,
the sector address must appear on the appropriate highest
order address bits. Refer to the corresponding Sector Address
Tables. The Command Definitions table shows the remaining
Hardware Data Protection
The command sequence requirement of unlock cycles for
programming or erasing provides data protection against
inadvertent writes (refer to the Command Definitions table). In
addition, the following hardware data protection measures
prevent accidental erasure or programming, which might
otherwise be caused by spurious system level signals during
V
CC
power-up and power-down transitions, or from system
noise.
Low V
CC
Write Inhibit
When V
CC
is less than V
LKO
, the device does not accept
any write cycles. This protects data during V
CC
power-up and
power-down. The command register and all internal program/
TABLE 2: SECTOR ADDRESSES TABLE
SECTOR
SA0
SA1
SA2
SA3
SA4
SA5
SA6
SA7
A16
0
0
0
0
1
1
1
1
A15
0
0
1
1
0
0
1
1
A14
0
1
0
1
0
1
0
1
ADDRESS RANGE
00000h - 03FFFh
04000h - 07FFFh
08000h - 0BFFFh
0C000h - 0FFFFh
10000h - 13FFFh
14000h - 17FFFh
18000h - 1BFFFh
1C000h - 1FFFFh
NOTE:
All sectors are 16 Kbytes in size.
Austin Semiconductor, Inc. reserves the right to change products or specifications without notice.
AS29F010
Rev. 0.3 10/02
5
Linux开发
京公网安备 11010802033920号
Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved
电子工程世界
