AMIC A29L400UV-90U 512k x 8 bit / 256k x 16 bit cmos 3.0 volt-only, boot sector flash memory Datasheet

A29L400 Series
512K X 8 Bit / 256K X 16 Bit CMOS 3.0 Volt-only,
Preliminary
Boot Sector Flash Memory
Features
n Single power supply operation
- Full voltage range: 2.7 to 3.6 volt read and write
operations for battery-powered applications
- Regulated voltage range: 3.0 to 3.6 volt read and write
operations for compatibility with high performance 3.3
volt microprocessors
n Access times:
- 70/90 (max.)
n Current:
- 4 mA typical active read current
- 20 mA typical program/erase current
- 200 nA typical CMOS standby
- 200 nA Automatic Sleep Mode current
n Flexible sector architecture
- 16 Kbyte/ 8 KbyteX2/ 32 Kbyte/ 64 KbyteX7 sectors
- 8 Kword/ 4 KwordX2/ 16 Kword/ 32 KwordX7 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. Temporary Sector Unprotect feature
allows code changes in previously locked sectors
n Extended operating temperature range: -45°C ~ +85°C
for –U series
n Unlock Bypass Program Command
- Reduces overall programming time when issuing
multiple program command sequence
n Top or bottom boot block configurations available
n Embedded 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 data at specified addresses
PRELIMINARY
(October, 2002, Version 0.2)
n Typical 100,000 program/erase cycles per sector
n 20-year data retention at 125°C
- Reliable operation for the life of the system
n Compatible with JEDEC-standards
- Pinout and software compatible with single-powersupply Flash memory standard
- Superior inadvertent write protection
n Data Polling and toggle bits
- Provides a software method of detecting completion
of program or erase operations
n Ready / BUSY pin (RY / BY )
- Provides a hardware method of detecting completion
of program or erase operations (not available on 44pin SOP)
n 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
n Hardware reset pin ( RESET )
- Hardware method to reset the device to reading array
data
n Package options
- 44-pin SOP or 48-pin TSOP (I) or 48-ball TFBGA
1
AMIC Technology, Inc.
A29L400 Series
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 Unlock Bypass mode
facilitates faster programming times by requiring only two
write cycles to program data instead of four.
The host system can detect whether a program or erase
operation is complete by observing the RY / BY pin, or by
reading the I/O7 ( Data Polling) and I/O6 (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 A29L400 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/Erase Resume 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.
The hardware RESET pin terminates any operation in
progress and resets the internal state machine to reading
array data. The RESET pin may be tied to the system reset
circuitry. A system reset would thus also reset the device,
enabling the system microprocessor to read the boot-up
firmware from the Flash memory.
The device offers two power-saving features. When
addresses have been stable for a specified amount of time,
the device enters the automatic sleep mode. The system can
also place the device into the standby mode. Power
consumption is greatly reduced in both these modes.
General Description
The A29L400 is an 4Mbit, 3.0 volt-only Flash memory
organized as 524,288 bytes of 8 bits or 262,144 words of 16
bits each. The 8 bits of data appear on I/O0 - I/O7; the 16 bits
of data appear on I/O0~I/O15. The A29L400 is offered in 48ball TFBGA, 44-pin SOP and 48-Pin TSOP packages. This
device is designed to be programmed in-system with the
standard system 3.0 volt VCC supply. Additional 12.0 volt
VPP is not required for in-system write or erase operations.
However, the A29L400 can also be programmed in standard
EPROM programmers.
The A29L400 has the first toggle bit, I/O6, which indicates
whether an Embedded Program or Erase is in progress, or it
is in the Erase Suspend. Besides the I/O6 toggle bit, the
A29L400 has a second toggle bit, I/O2, to indicate whether
the addressed sector is being selected for erase. The
A29L400 also offers the ability to program in the Erase
Suspend mode. The standard A29L400 offers access times
of 70 and 90ns, 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 3.0 volt power supply for
both read and write functions. Internally generated and
regulated voltages are provided for the program and erase
operations.
The A29L400 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.
PRELIMINARY
(October, 2002, Version 0.2)
2
AMIC Technology, Inc.
A29L400 Series
Pin Configurations
n SOP
RESET
1
44
RY/BY
A17
2
43
WE
3
42
A8
A7
4
41
A9
A6
5
40
A10
A5
6
39
A11
A4
7
38
A12
A3
8
37
A13
A2
9
36
A14
A1
10
35
A15
A0
11
34
A16
CE
12
33
BYTE
VSS
13
32
VSS
OE
14
31
I/O15 (A-1)
I/O0
15
30
I/O7
I/O8
16
29
I/O14
I/O1
17
28
I/O6
I/O9
18
27
I/O13
I/O2
19
26
I/O5
I/O10
20
25
I/O12
I/O3
21
24
I/O4
I/O11
22
23
VCC
A29L400
NC
n TSOP (I)
A15
A14
A13
A12
A11
A10
A9
A8
NC
NC
WE
RESET
NC
NC
RY/BY
NC
A17
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
21
22
23
24
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
A29L400V
A16
BYTE
VSS
I/O15 (A-1)
I/O7
I/O14
I/O6
I/O13
I/O5
I/O12
I/O4
VCC
I/O11
I/O3
I/O10
I/O2
I/O9
I/O1
I/O8
I/O0
OE
VSS
CE
A0
n TFBGA
TFBGA
Top View, Balls Facing Down
A6
B6
C6
D6
E6
F6
G6
H6
A13
A12
A14
A15
A16
BYTE
I/O15(A-1)
VSS
A5
B5
C5
D5
E5
F5
G5
H5
A9
A8
A10
A11
I/O7
I/O14
I/O13
I/O6
A4
B4
C4
D4
E4
F4
G4
H4
WE
RESET
NC
NC
I/O5
I/O12
VCC
I/O4
A3
B3
C3
D3
E3
F3
G3
H3
NC
NC
NC
I/O2
I/O10
I/O11
I/O3
A2
B2
C2
D2
E2
F2
G2
H2
A7
A17
A6
A5
I/O0
I/O8
I/O9
I/O1
A1
B1
C1
D1
E1
F1
G1
H1
A3
A4
A2
A1
A0
CE
OE
VSS
RY/BY
PRELIMINARY
(October, 2002, Version 0.2)
3
AMIC Technology, Inc.
A29L400 Series
Block Diagram
RY/BY
I/O 0 - I/O 15 (A-1)
VCC
VSS
Sector Switches
Input/Output
Buffers
Erase Voltage
Generator
RESET
State
Control
WE
BYTE
PGM Voltage
Generator
Command
Register
Chip Enable
Output Enable
Logic
CE
OE
VCC Detector
Address Latch
STB
Timer
A0-A17
STB
Data Latch
Y-Decoder
Y-Gating
X-decoder
Cell Matrix
Pin Descriptions
Pin No.
Description
A0 - A17
Address Inputs
I/O0 - I/O14
I/O15 (A-1)
Data Inputs/Outputs
I/O15
Data Input/Output, Word Mode
A-1
LSB Address Input, Byte Mode
CE
Chip Enable
WE
Write Enable
OE
Output Enable
RESET
BYTE
Selects Byte Mode or Word Mode
RY/ BY
Ready/ BUSY - Output
VSS
Ground
VCC
Power Supply
NC
PRELIMINARY
Hardware Reset
(October, 2002, Version 0.2)
Pin not connected internally
4
AMIC Technology, Inc.
A29L400 Series
Absolute Maximum Ratings*
*Comments
Storage Temperature Plastic Packages . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .0°C to + 70°C
. . . . . . . . . . . . . . . . . . . . . . for -U series: -45°C to +85°C
Ambient Temperature with Power Applied . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0°C to + 70°C
. . . . . . . . . . . . . . . . . . . . . . for -U series: -45°C to +85°C
Voltage with Respect to Ground
VCC (Note 1) . . . . . . . . . . . . . . . . . . . . . . . -0.5V to +4.0V
A9, OE & RESET (Note 2) . . . . . . . . . . . . -0.5 to +12.5V
All other pins (Note 1) . . . . . . . . . . . . -0.5V to VCC + 0.5V
Output Short Circuit Current (Note 3) . . . . . . . . . 200mA
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:
Ambient Temperature (TA) . . . . . . . . . . . . . . 0°C to +70°C
Operating Ranges
Commercial (C) Devices
Extended Range Devices
1. Minimum DC voltage on input or I/O pins is -0.5V. During
voltage transitions, input or I/O pins may undershoot
VSS to -2.0V for periods of up to 20ns. Maximum DC
voltage on input and I/O pins is VCC +0.5V. During
voltage transitions, input or I/O pins may overshoot to
VCC +2.0V for periods up to 20ns.
2. Minimum DC input voltage on A9, OE and RESET is -
Ambient Temperature (TA) . . . . . . . . . . . . -45°C to +85°C
VCC Supply Voltages
VCC for all devices . . . . . . . . . . . . . . . . . . +2.7V to +3.6V
Operating ranges define those limits between which the
functionally of the device is guaranteed.
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 is +12.5V which may
overshoot to 14.0V for periods up to 20ns.
3. No more than one output is shorted at a time. Duration
of the short circuit should not be greater than one
second.
Device Bus Operations
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.
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
Table 1. A29L400 Device Bus Operations
Operation
Read
CE
OE
WE
RESET
A0 – A17
(Note 1)
I/O0 - I/O7
L
L
H
H
AIN
DOUT
I/O8 - I/O15
BYTE =VIH
DOUT
BYTE =VIL
I/O8~I/O4=High-Z
I/O15=A-1
High-Z
High-Z
High-Z
High-Z
X
Write
L
H
L
H
AIN
DIN
DIN
CMOS Standby
X VCC ± 0.3 V
X
High-Z
High-Z
VCC ± 0.3 V X
Output Disable
L
H
H
H
X
High-Z
High-Z
Hardware Reset
X
X
X
L
X
High-Z
High-Z
Sector Protect
L
H
L
VID
Sector Address,
DIN
X
(See Note 2)
A6=L, A1=H, A0=L
Sector Unprotect
L
H
L
VID
Sector Address,
DIN
X
X
(See Note 2)
A6=H, A1=H, A0=L
Temporary Sector
X
X
X
VID
AIN
DIN
DIN
X
Unprotect
Legend:
L = Logic Low = VIL, H = Logic High = VIH, VID = 12.0 ± 0.5V, X = Don't Care, DIN = Data In, DOUT = Data Out, AIN = Address In
Notes:
1. Addresses are A17:A0 in word mode ( BYTE=VIH), A17: A-1 in byte mode ( BYTE=VIL).
2. See the “Sector Protection/Unprotection” section and Temporary Sector Unprotect for more information.
PRELIMINARY
(October, 2002, Version 0.2)
5
AMIC Technology, Inc.
A29L400 Series
select a sector. See the "Command Definitions" section for
details on erasing a sector or the entire chip, or
suspending/resuming the erase operation.
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 I/O7 - I/O0. Standard
read cycle timings apply in this mode. Refer to the
"Autoselect Mode" and "Autoselect Command Sequence"
sections for more information.
ICC2 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.
Word/Byte Configuration
The BYTE pin determines whether the I/O pins I/O15-I/O0
operate in the byte or word configuration. If the BYTE pin
is set at logic ”1”, the device is in word configuration, I/O15I/O0 are active and controlled by CE and OE .
If the BYTE pin is set at logic “0”, the device is in byte
configuration, and only I/O0-I/O7 are active and controlled
by CE and OE . I/O8-I/O14 are tri-stated, and I/O15 pin is
used as an input for the LSB(A-1) address function.
Requirements for Reading Array Data
To read array data from the outputs, the system must drive
the CE and OE pins to VIL. CE is the power control and
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 I/O7 - I/O0. Standard read cycle timings and ICC read
specifications apply. Refer to "Write Operation Status" for
more information, and to each AC Characteristics section
for timing diagrams.
selects the device. OE is the output control and gates
array data to the output pins. WE should remain at VIH all
the time during read operation. The BYTE pin determines
whether the device outputs array data in words and bytes.
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, lCC1 in the DC Characteristics table represents
the active current specification for reading array data.
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
& RESET pins are both held at VCC ± 0.3V. (Note that this
is a more restricted voltage range than VIH.) If CE and
RESET are held at VIH, but not within VCC ± 0.3V, the
device will be in the standby mode, but the standby current
will be greater. The device requires the standard access
time (tCE) 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.
ICC3 and ICC4 in the DC Characteristics tables represent the
standby current specification.
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
VIL, and OE to VIH. For program operations, the BYTE pin
determines whether the device accepts program data in
bytes or words, Refer to “Word/Byte Configuration” for more
information. The device features an Unlock Bypass mode to
facilitate faster programming. Once the device enters the
Unlock Bypass mode, only two write cycles are required to
program a word or byte, instead of four.
The “ Word / Byte Program Command Sequence” section
has details on programming data to the device using both
standard and Unlock Bypass command sequence. An
erase operation can erase one sector, multiple sectors, or
the entire device. The Sector Address Tables indicate the
address range that each sector occupies. A "sector
address" consists of the address inputs required to uniquely
PRELIMINARY
(October, 2002, Version 0.2)
Automatic Sleep Mode
The automatic sleep mode minimizes Flash device energy
consumption. The device automatically enables this mode
when addresses remain stable for tACC +30ns. The
automatic sleep mode is independent of the CE , WE and
OE control signals. Standard address access timings
provide new data when addresses are changed. While in
sleep mode, output data is latched and always available to
the system. ICC4 in the DC Characteristics table represents
the automatic sleep mode current specification.
6
AMIC Technology, Inc.
A29L400 Series
Output Disable Mode
The RESET pin may be tied to the system reset circuitry. A
system reset would thus also reset the Flash memory,
enabling the system to read the boot-up firmware from the
Flash memory.
If RESET is asserted during a program or erase operation,
When the OE input is at VIH, output from the device is
disabled. The output pins are placed in the high impedance
state.
the RY/ BY pin remains a “0” (busy) until the internal reset
operation is complete, which requires a time tREADY (during
Embedded Algorithms). The system can thus monitor
RY/ BY to determine whether the reset operation is
complete. If RESET is asserted when a program or erase
RESET : Hardware Reset Pin
The RESET pin provides a hardware method of resetting
the device to reading array data. When the system drives
the RESET pin low for at least a period of tRP, the device
immediately terminates any operation in progress, tristates
all data output pins, and ignores all read/write attempts for
the duration of the RESET pulse. The device also resets
the internal state machine to reading array data. The
operation that was interrupted should be reinitiated once
the device is ready to accept another command sequence,
to ensure data integrity.
Current is reduced for the duration of the RESET pulse.
When RESET is held at VSS ± 0.3V, the device draws
CMOS standby current (ICC4 ). If RESET is held at VIL but
not within VSS ± 0.3V, the standby current will be greater.
PRELIMINARY
(October, 2002, Version 0.2)
operation is not executing (RY/ BY pin is “1”), the reset
operation is completed within a time of tREADY (not during
Embedded Algorithms). The system can read data tRH after
the RESET pin return to VIH.
Refer to the AC Characteristics tables for RESET
parameters and diagram.
7
AMIC Technology, Inc.
A29L400 Series
Table 2. A29L400 Top Boot Block Sector Address Table
Sector
A17
A16
A15
A14
A13
A12
Sector Size
(Kbytes/Kwords)
SA0
SA1
SA2
SA3
SA4
SA5
SA6
SA7
SA8
SA9
SA10
0
0
0
0
1
1
1
1
1
1
1
0
0
1
1
0
0
1
1
1
1
1
0
1
0
1
0
1
0
1
1
1
1
X
X
X
X
X
X
X
0
1
1
1
X
X
X
X
X
X
X
X
0
0
1
X
X
X
X
X
X
X
X
0
1
X
64/32
64/32
64/32
64/32
64/32
64/32
64/32
32/16
8/4
8/4
16/8
Address Range (in hexadecimal)
(x8)
Address Range
00000h - 0FFFFh
10000h - 1FFFFh
20000h - 2FFFFh
30000h - 3FFFFh
40000h - 4FFFFh
50000h - 5FFFFh
60000h - 6FFFFh
70000h - 77FFFh
78000h - 79FFFh
7A000h - 7BFFFh
7C000h - 7FFFFh
(x16)
Address Range
00000h - 07FFFh
08000h - 0FFFFh
10000h - 17FFFh
18000h - 1FFFFh
20000h - 27FFFh
28000h - 2FFFFh
30000h - 37FFFh
38000h - 3BFFFh
3C000h - 3CFFFh
3D000h - 3DFFFh
3E000h - 3FFFFh
Table 3. A29L400 Bottom Boot Block Sector Address Table
Sector
A17
A16
A15
A14
A13
A12
Sector Size
(Kbytes/Kwords)
SA0
SA1
SA2
SA3
SA4
SA5
SA6
SA7
SA8
SA9
SA10
0
0
0
0
0
0
0
1
1
1
1
0
0
0
0
0
1
1
0
0
1
1
0
0
0
0
1
0
1
0
1
0
1
0
0
0
1
X
X
X
X
X
X
X
0
1
1
X
X
X
X
X
X
X
X
X
0
1
X
X
X
X
X
X
X
X
16/8
8/4
8/4
32/16
64/32
64/32
64/32
64/32
64/32
64/32
64/32
Address Range
(x8)
Address Range
00000h - 03FFFh
04000h - 05FFFh
06000h - 07FFFh
08000h - 0FFFFh
10000h - 1FFFFh
20000h - 2FFFFh
30000h - 3FFFFh
40000h - 4FFFFh
50000h - 5FFFFh
60000h - 6FFFFh
70000h - 7FFFFh
(x16)
Address Range
00000h - 01FFFh
02000h - 02FFFh
03000h - 03FFFh
04000h - 07FFFh
08000h - 0FFFFh
10000h - 17FFFh
18000h - 1FFFFh
20000h - 27FFFh
28000h - 2FFFFh
30000h - 37FFFh
38000h - 3FFFFh
Autoselect Mode
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 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 I/O7 - I/O0.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 VID. See "Command Definitions" for
details on using the autoselect mode.
The autoselect mode provides manufacturer and device
identification, and sector protection verification, through
identifier codes output on I/O7 - I/O0. 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 VID (11.5V to 12.5 V) on address pin A9.
Address pins A6, A1, and A0 must be as shown in
Autoselect Codes (High Voltage Method) table. In
PRELIMINARY
(October, 2002, Version 0.2)
8
AMIC Technology, Inc.
A29L400 Series
Table 4. A29L400 Autoselect Codes (High Voltage Method)
Description
Mode
Manufacturer ID: AMIC
CE
L
Device ID:
A29L400
(Top Boot Block)
Word
Device ID:
A29L400
(Bottom Boot Block)
Word
Byte
Byte
Continuation ID
Sector Protection Verification
L
OE
L
L
WE
H
H
A17
to
A11
to
A12
A10
X
X
X
X
A9
A8
A6
VID
X
X
A1
A0
A2
A7
VID
A5
to
to
L
L
X
X
L
L
L
H
I/O8
I/O7
to
to
I/O15
I/O0
X
37h
B3h
34h
X
34h
B3h
B5h
L
L
H
X
X
VID
X
L
X
L
H
X
B5h
L
L
H
X
X
VID
X
L
X
H
H
X
7Fh
X
01h
(protected)
X
00h
(unprotected)
L
L
H
SA
X
VID
X
L
X
H
L
L=Logic Low= VIL, H=Logic High=VIH, SA=Sector Address, X=Don’t Care.
Note: The autoselect codes may also be accessed in-system via command sequences.
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(October, 2002, Version 0.2)
9
AMIC Technology, Inc.
A29L400 Series
Sector Protection/Unprotection
Temporary Sector Unprotect
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.
It is possible to determine whether a sector is protected or
unprotected. See “Autoselect Mode” for details.
Sector protection / unprotection can be implemented via two
methods. The primary method requires VID on the
RESET pin only, and can be implemented either in-system or
via programming equipment. Figure 2 shows the algorithm
and the Sector Protect / Unprotect Timing Diagram illustrates
the timing waveforms for this feature. This method uses
standard microprocessor bus cycle timing. For sector
unprotect, all unprotected sectors must first be protected
prior to the first sector unprotect write cycle. The alternate
method must be implemented using programming
equipment. The procedure requires a high voltage (VID) 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.
This feature allows temporary unprotection of previous
protected sectors to change data in-system. The Sector
Unprotect mode is activated by setting the RESET pin to VID.
During this mode, formerly protected sectors can be
programmed or erased by selecting the sector addresses.
Once VID is removed from the RESET pin, all the previously
protected sectors are protected again. Figure 1 shows the
algorithm, and the Temporary Sector Unprotect diagram
shows the timing waveforms, for this feature.
START
RESET = VID
(Note 1)
Perform Erase or
Program Operations
Hardware Data Protection
The requirement of command unlocking sequence 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
VCC power-up transitions, or from system noise. The device is
powered up to read array data to avoid accidentally writing
data to the array.
RESET = VIH
Temporary Sector
Unprotect
Completed (Note 2)
Write Pulse "Glitch" Protection
Noise pulses of less than 5ns (typical) on OE , CE or WE
do not initiate a write cycle.
Notes:
1. All protected sectors unprotected.
2. All previously protected sectors are protected once again.
Logical Inhibit
Write cycles are inhibited by holding any one of OE =VIL,
CE = VIH or WE = VIH. To initiate a write cycle, CE and
Figure 1. Temporary Sector Unprotect Operation
WE must be a logical zero while OE is a logical one.
Power-Up Write Inhibit
If WE = CE = VIL and OE = VIH during power up, the
device does not accept commands on the rising edge of
WE . The internal state machine is automatically reset to
reading array data on the initial power-up.
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10
AMIC Technology, Inc.
A29L400 Series
START
START
Protect all sectors:
The indicated portion of
the sector protect
algorithm must be
performed for all
unprotected sectors prior
to issuing the first sector
unprotect address
PLSCNT=1
RESET=V ID
Wait 1 us
No
Temporary Sector
Unprotect Mode
PLSCNT=1
RESET=V ID
Wait 1 us
No
First Write
Cycle=60h?
First Write
Cycle=60h?
Yes
All sectors
protected?
Sector Protect
Write 60h to sector
address with A6=0,
A1=1, A0=0
Yes
Set up first sector
address
Sector Unprotect:
Write 60h to sector
address with A6=1,
A1=1, A0=0
Wait 150 us
Increment
PLSCNT
Temporary Sector
Unprotect Mode
Yes
Set up sector
address
Verify Sector
Protect: Write 40h
to sector address
with A6=0, A1=1,
A0=0
No
Reset
PLSCNT=1
Wait 15 ms
Read from
sector address
with A6=0,
A1=1, A0=0
Verify Sector
Unprotect : Write
40h to sector
address with A6=1,
A1=1, A0=0
Increment
PLSCNT
No
PLSCNT
=25?
No
Read from sector
address with A6=1,
A1=1, A0=0
Data=01h?
No
Set up
next sector
address
Yes
Yes
Protect another
sector?
Device failed
PLSCNT=
1000?
Yes
No
Remove V ID
from RESET
Last sector
verified?
Device failed
Write reset
command
Sector Protect
complete
Yes
Yes
No
Sector Protect
Algorithm
Data=00h?
No
Yes
Remove V ID
from RESET
Sector Unprotect
Algorithm
Write reset
Command
Sector Unprotect
complete
Figure 2. In-System Sector Protect/Unprotect Algorithms
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11
AMIC Technology, Inc.
A29L400 Series
Command Definitions
Autoselect Command Sequence
Writing specific address and data commands or sequences
into the command register initiates device operations. The
Command Definitions table defines the valid register
command sequences. Writing incorrect address and data
values or writing them in the improper sequence resets the
device to reading array data.
All addresses are latched on the falling edge of WE or CE ,
whichever happens later. All data is latched on the rising edge
of WE or CE , whichever happens first. Refer to the
appropriate timing diagrams in the "AC Characteristics"
section.
The autoselect command sequence allows the host system to
access the manufacturer and devices codes, and determine
whether or not a sector is protected. The Command Definitions
table shows the address and data requirements. This method
is an alternative to that shown in the Autoselect Codes (High
Voltage Method) table, which is intended for PROM
programmers and requires VID on address bit A9.
The autoselect command sequence is initiated by writing two
unlock cycles, followed by the autoselect command. The
device then enters the autoselect mode, and the system may
read at any address any number of times, without initiating
another command sequence.
A read cycle at address XX00h retrieves the manufacturer
code and another read cycle at XX03h retrieves the
continuation code. A read cycle at address XX01h returns the
device code. A read cycle containing a sector address (SA)
and the address 02h in returns 01h if that sector is protected,
or 00h if it is unprotected. Refer to the Sector Address tables
for valid sector addresses.
The system must write the reset command to exit the
autoselect mode and return to reading array data.
Reading Array Data
The device is automatically set to reading array data after
device power-up. No commands are required to retrieve data.
The device is also ready to read array data after completing
an Embedded Program or Embedded Erase algorithm. After
the device accepts an Erase Suspend command, the device
enters the Erase Suspend mode. The system can read array
data using the standard read timings, except that if it reads at
an address within erase-suspended sectors, the device
outputs status data. After completing a programming
operation in the Erase Suspend mode, the system may once
again read array data with the same exception. See "Erase
Suspend/Erase Resume Commands" for more information on
this mode.
The system must issue the reset command to re-enable the
device for reading array data if I/O5 goes high, or while in the
autoselect mode. See the "Reset Command" section, next.
See also "Requirements for Reading Array Data" in the
"Device Bus Operations" section for more information. The
Read Operations table provides the read parameters, and
Read Operation Timings diagram shows the timing diagram.
Reset Command
Writing the reset command to the device resets the device to
reading array data. Address bits are don't care for this
command. The reset command may be written between the
sequence cycles in an erase command sequence before
erasing begins. This resets the device to reading array data.
Once erasure begins, however, the device ignores reset
commands until the operation is complete.
The reset command may be written between the sequence
cycles in a program command sequence before programming
begins. This resets the device to reading array data (also
applies to programming in Erase Suspend mode). Once
programming begins, however, the device ignores reset
commands until the operation is complete.
The reset command may be written between the sequence
cycles in an autoselect command sequence. Once in the
autoselect mode, the reset command must be written to
return to reading array data (also applies to autoselect during
Erase Suspend).
If I/O5 goes high during a program or erase operation, writing
the reset command returns the device to reading array data
(also applies during Erase Suspend).
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(October, 2002, Version 0.2)
12
Word/Byte Program Command Sequence
The system may program the device by word or byte,
depending on the state of the BYTE pin. Programming is a
four-bus-cycle operation. The program command sequence is
initiated by writing two unlock write cycles, followed by the
program set-up command. The program address and data are
written next, which in turn initiate the Embedded Program
algorithm. The system is not required to provide further
controls or timings. The device automatically provides
internally generated program pulses and verify the
programmed cell margin. Table 5 shows the address and data
requirements for the byte program command sequence.
When the Embedded Program algorithm is complete, the
device then returns to reading array data and addresses are
longer latched. The system can determine the status of the
program operation by using I/O7, I/O6, or RY/ BY . See “Write
Operation Status” for information on these status bits.
Any commands written to the device during the Embedded
Program Algorithm are ignored. Note that a hardware reset
immediately terminates the programming operation. The Byte
Program command sequence should be reinitiated once the
device has reset to reading array data, to ensure data integrity.
Programming is allowed in any sequence and across sector
boundaries. A bit cannot be programmed from a “0” back to a
“1”. Attempting to do so may halt the operation and set I/O5 to
“1”, or cause the Data Polling algorithm to indicate the
operation was successful. However, a succeeding read will
show that the data is still “0”. Only erase operations can
convert a “0” to a “1”.
AMIC Technology, Inc.
A29L400 Series
During the unlock bypass mode, only the Unlock Bypass
Program and Unlock Bypass Reset commands are valid. To
exit the unlock bypass mode, the system must issue the twocycle unlock bypass reset command sequence. The first cycle
must contain the data 90h; the second cycle the data 00h.
Addresses are don’t care for both cycle. The device returns to
reading array data.
Figure 3 illustrates the algorithm for the program operation.
See the Erase/Program Operations in “AC Characteristics” for
parameters, and to Program Operation Timings for timing
diagrams.
START
Write Program
Command
Sequence
Embedded
Program
algorithm in
progress
Data Poll
from System
Chip Erase Command Sequence
Chip erase is a six-bus-cycle operation. The chip erase
command sequence is initiated by writing two unlock cycles,
followed by a set-up command. Two additional unlock write
cycles are then followed by the chip erase command, which in
turn invokes the Embedded Erase algorithm. The device does
not require the system to preprogram prior to erase. The
Embedded Erase algorithm automatically preprograms and
verifies the entire memory for an all zero data pattern prior to
electrical erase. The system is not required to provide any
controls or timings during these operations. The Command
Definitions table shows the address and data requirements for
the chip erase command sequence.
Any commands written to the chip during the Embedded
Erase algorithm are ignored. The system can determine the
status of the erase operation by using I/O7, I/O6, or I/O2. See
"Write Operation Status" for information on these status bits.
When the Embedded Erase algorithm is complete, the device
returns to reading array data and addresses are no longer
latched.
Figure 4 illustrates the algorithm for the erase operation. See
the Erase/Program Operations tables in "AC Characteristics"
for parameters, and to the Chip/Sector Erase Operation
Timings for timing waveforms.
Verify Data ?
No
Yes
Increment Address
Last Address ?
Yes
Programming
Completed
Note : See the appropriate Command Definitions table for
program command sequence.
Sector Erase Command Sequence
Figure 3. Program Operation
Unlock Bypass Command Sequence
The unlock bypass feature allows the system to program
bytes or words to the device faster than using the standard
program command sequence. The unlock bypass command
sequence is initiated by first writing two unlock cycles. This is
followed by a third write cycle containing the unlock bypass
command, 20h. The device then enters the unlock bypass
mode. A two-cycle unlock bypass program command
sequence is all that is required to program in this mode. The
first cycle in this sequence contains the unlock bypass
program command, A0h; the second cycle contains the
program address and data. Additional data is programmed in
the same manner. This mode dispenses with the initial two
unlock cycles required in the standard program command
sequence, resulting in faster total programming time. Table 5
shows the requirements for the command sequence.
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(October, 2002, Version 0.2)
13
Sector erase is a six-bus-cycle operation. The sector erase
command sequence is initiated by writing two unlock cycles,
followed by a set-up command. Two additional unlock write
cycles are then followed by the address of the sector to be
erased, and the sector erase command. The Command
Definitions table shows the address and data requirements for
the sector erase command sequence.
The device does not require the system to preprogram the
memory prior to erase. The Embedded Erase algorithm
automatically programs and verifies the sector for an all zero
data pattern prior to electrical erase. The system is not
required to provide any controls or timings during these
operations.
After the command sequence is written, a sector erase timeout of 50µs begins. During the time-out period, additional
sector addresses and sector erase commands may be written.
Loading the sector erase buffer may be done in any
sequence, and the number of sectors may be from one sector
to all sectors. The time between these additional cycles must
be less than 50µs, otherwise the last address and command
might not be accepted, and erasure may begin. It is
recommended that processor interrupts be disabled during
this time to ensure all commands are accepted. The interrupts
AMIC Technology, Inc.
A29L400 Series
can be re-enabled after the last Sector Erase command is
written. If the time between additional sector erase commands
can be assumed to be less than 50µs, the system need not
monitor I/O3. Any command other than Sector Erase or Erase
Suspend during the time-out period resets the device to
reading array data. The system must rewrite the command
sequence and any additional sector addresses and
commands.
The system can monitor I/O3 to determine if the sector erase
timer has timed out. (See the " I/O3: Sector Erase Timer"
section.) The time-out begins from the rising edge of the final
WE pulse in the command sequence.
Once the sector erase operation has begun, only the Erase
Suspend command is valid. All other commands are ignored.
When the Embedded Erase algorithm is complete, the device
returns to reading array data and addresses are no longer
latched. The system can determine the status of the erase
operation by using I/O7, I/O6, or I/O2. Refer to "Write
Operation Status" for information on these status bits.
4 illustrates the algorithm for the erase operation. Refer to the
Erase/Program Operations tables in the "AC Characteristics"
section for parameters, and to the Sector Erase Operations
Timing diagram for timing waveforms.
After an erase-suspended program operation is complete, the
system can once again read array data within non-suspended
sectors. The system can determine the status of the program
operation using the I/O7 or I/O6 status bits, just as in the
standard program operation. See "Write Operation Status" for
more information.
The system may also write the autoselect command
sequence when the device is in the Erase Suspend mode.
The device allows reading autoselect codes even at
addresses within erasing sectors, since the codes are not
stored in the memory array. When the device exits the
autoselect mode, the device reverts to the Erase Suspend
mode, and is ready for another valid operation. See
"Autoselect Command Sequence" for more information.
The system must write the Erase Resume command (address
bits are "don't care") to exit the erase suspend mode and
continue the sector erase operation. Further writes of the
Resume command are ignored. Another Erase Suspend
command can be written after the device has resumed
erasing.
START
Erase Suspend/Erase Resume Commands
The Erase Suspend command allows the system to interrupt
a sector erase operation and then read data from, or program
data to, any sector not selected for erasure. This command is
valid only during the sector erase operation, including the
50µs time-out period during the sector erase command
sequence. The Erase Suspend command is ignored if written
during the chip erase operation or Embedded Program
algorithm. Writing the Erase Suspend command during the
Sector Erase time-out immediately terminates the time-out
period and suspends the erase operation. Addresses are
"don't cares" when writing the Erase Suspend command.
When the Erase Suspend command is written during a sector
erase operation, the device requires a maximum of 20µs to
suspend the erase operation. However, when the Erase
Suspend command is written during the sector erase timeout, the device immediately terminates the time-out period
and suspends the erase operation.
After the erase operation has been suspended, the system
can read array data from or program data to any sector not
selected for erasure. (The device "erase suspends" all sectors
selected for erasure.) Normal read and write timings and
command definitions apply. Reading at any address within
erase-suspended sectors produces status data on I/O7 - I/O0.
The system can use I/O7, or I/O6 and I/O2 together, to
determine if a sector is actively erasing or is erasesuspended. See "Write Operation Status" for information on
these status bits.
Write Erase
Command
Sequence
Data Poll
from System
Embedded
Erase
algorithm in
progress
No
Data = FFh ?
Yes
Erasure Completed
Note :
1. See the appropriate Command Definitions table for erase
command sequences.
2. See "I/O3 : Sector Erase Timer" for more information.
Figure 4. Erase Operation
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(October, 2002, Version 0.2)
14
AMIC Technology, Inc.
A29L400 Series
Cycles
Table 5. A29L400 Command Definitions
Command
Sequence
(Note 1)
Read (Note 6)
Reset (Note 7)
Autoselect (Note 8)
Device ID,
Top Boot Block
Device ID,
Bottom Boot Block
Continuation ID
Sector Protect Verify
(Note 9)
Byte
RA
RD
1
XXX
F0
4
Word
Byte
4
Word
Byte
Word
4
4
AAA
555
AA
AA
AAA
555
2AA
555
2AA
555
2AA
55
55
55
555
AA
2AA
555
AAA
555
AAA
555
90
X00
90
X01 B334
X02 34
90
X01 B3B5
AAA
55
555
X02
90
X03
37
B5
7F
AAA
X06
Word
555
2AA
555
90
(SA) XX00
X02 XX01
00
(SA)
X04
01
A0
PA
4
4
Unlock Bypass Program (Note 10)
2
Unlock Bypass Reset (Note 11)
2
Word
Byte
6
Word
Byte
AA
AAA
Word
Byte 3
Sector Erase
555
AA
555
Byte
Chip Erase
AAA
Third
Fourth
Fifth
Sixth
Addr Data Addr Data Addr Data Addr Data
AAA
Word
Unlock Bypass
555
Second
Addr Data
Byte
Byte
Program
First
Addr Data
1
Word
Manufacturer ID
Bus Cycles (Notes 2 - 5)
6
555
AAA
555
AAA
55
555
AA
AA
2AA
555
2AA
555
AAA
55
55
XXX A0
PA
PD
XXX 90
XXX
00
555
2AA
AAA
555
AAA
AA
AA
Erase Suspend (Note 12)
1
XXX
B0
Erase Resume (Note 13)
1
XXX
30
555
2AA
555
55
55
555
AAA
555
AAA
555
AAA
555
AAA
PD
20
80
80
555
AAA
555
AAA
AA
AA
2AA
555
2AA
555
55
55
555
AAA
SA
10
30
Legend:
X = Don't care
RA = Address of the memory location to be read.
RD = Data read from location RA during read operation.
PA = Address of the memory location to be programmed. Addresses latch on the falling edge of the WE or CE pulse,
whichever happens later.
PD = Data to be programmed at location PA. Data latches on the rising edge of WE or CE pulse, whichever happens first.
SA = Address of the sector to be verified (in autoselect mode) or erased. Address bits A17 - A12 select a unique sector.
PRELIMINARY
(October, 2002, Version 0.2)
15
AMIC Technology, Inc.
A29L400 Series
Note:
1. See Table 1 for description of bus operations.
2. All values are in hexadecimal.
3. Except when reading array or autoselect data, all bus cycles are write operation.
4. Data bits I/O15~I/O8 are don’t care for unlock and command cycles.
5. Address bits A17 - A11 are don't cares for unlock and command cycles, unless SA or PA required.
6. No unlock or command cycles required when reading array data.
7. The Reset command is required to return to reading array data when device is in the autoselect mode, or if I/O5 goes high
(while the device is providing status data).
8. The fourth cycle of the autoselect command sequence is a read cycle.
9. The data is 00h for an unprotected sector and 01h for a protected sector. See “Autoselect Command Sequence” for more
information.
10. The Unlock Bypass command is required prior to the Unlock Bypass Program command.
11. The Unlock Bypass Reset command is required to return to reading array data when the device is in the unlock bypass
mode.
12. The system may read and program in non-erasing sectors, or enter the autoselect mode, when in the Erase Suspend mode.
13. The Erase Resume command is valid only during the Erase Suspend mode.
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(October, 2002, Version 0.2)
16
AMIC Technology, Inc.
A29L400 Series
Write Operation Status
Several bits, I/O2, I/O3, I/O5, I/O6, I/O7, RY/ BY are provided
in the A29L400 to determine the status of a write operation.
Table 6 and the following subsections describe the
functions of these status bits. I/O7, I/O6 and RY/ BY each
offer a method for determining whether a program or erase
operation is complete or in progress. These three bits are
discussed first.
START
Read I/O7-I/O0
Address = VA
I/O7: Data Polling
The Data Polling bit, I/O7, indicates to the host system
whether an Embedded Algorithm is in progress or
completed, or whether the device is in Erase Suspend.
Data Polling is valid after the rising edge of the final WE
pulse in the program or erase command sequence.
During the Embedded Program algorithm, the device
outputs on I/O7 the complement of the datum programmed
to I/O7. This I/O7 status also applies to programming during
Erase Suspend. When the Embedded Program algorithm is
complete, the device outputs the datum programmed to
I/O7. The system must provide the program address to read
valid status information on I/O7. If a program address falls
within a protected sector, Data Polling on I/O7 is active for
approximately 2µs, then the device returns to reading array
data.
During the Embedded Erase algorithm, Data Polling
produces a "0" on I/O7. When the Embedded Erase
algorithm is complete, or if the device enters the Erase
Suspend mode, Data Polling produces a "1" on I/O7.This is
analogous to the complement/true datum output described
for the Embedded Program algorithm: the erase function
changes all the bits in a sector to "1"; prior to this, the
device outputs the "complement," or "0." The system must
provide an address within any of the sectors selected for
erasure to read valid status information on I/O7.
After an erase command sequence is written, if all sectors
selected for erasing are protected, Data Polling on I/O7 is
active for approximately 100µs, then the device returns to
reading array data. If not all selected sectors are protected,
the Embedded Erase algorithm erases the unprotected
sectors, and ignores the selected sectors that are
protected.
When the system detects I/O7 has changed from the
complement to true data, it can read valid data at I/O7 - I/O0
on the following read cycles. This is because I/O7 may
change asynchronously with I/O0 - I/O6 while Output Enable
( OE ) is asserted low. The Data Polling Timings (During
Embedded Algorithms) in the "AC Characteristics" section
illustrates this. Table 6 shows the outputs for Data Polling
Yes
I/O7 = Data ?
No
No
I/O5 = 1?
Yes
Read I/O7 - I/O0
Address = VA
Yes
I/O7 = Data ?
No
FAIL
Note :
1. VA = Valid address for programming. During a sector
erase operation, a valid address is an address within any
sector selected for erasure. During chip erase, a valid
address is any non-protected sector address.
2. I/O7 should be rechecked even if I/O5 = "1" because
I/O7 may change simultaneously with I/O5.
on I/O7. Figure 5 shows the Data Polling algorithm.
PRELIMINARY
(October, 2002, Version 0.2)
PASS
Figure 5. Data Polling Algorithm
17
AMIC Technology, Inc.
A29L400 Series
RY/ BY : Read/ Busy
I/O2: Toggle Bit II
The RY/ BY is a dedicated, open-drain output pin that
indicates whether an Embedded algorithm is in progress or
complete. The RY/ BY status is valid after the rising edge of
the final WE pulse in the command sequence. Since
RY/ BY is an open-drain output, several RY/ BY pins can be
tied together in parallel with a pull-up resistor to VCC. (The
RY/ BY pin is not available on the 44-pin SOP package)
If the output is low (Busy), the device is actively erasing or
programming. (This includes programming in the Erase
Suspend mode.) If the output is high (Ready), the device is
ready to read array data (including during the Erase
Suspend mode), or is in the standby mode.
Table 6 shows the outputs for RY/ BY . Refer to “ RESET
Timings”, “Timing Waveforms for Program Operation” and
“Timing Waveforms for Chip/Sector Erase Operation” for
more information.
The "Toggle Bit II" on I/O2, when used with I/O6, indicates
whether a particular sector is actively erasing (that is, the
Embedded Erase algorithm is in progress), or whether that
sector is erase-suspended. Toggle Bit II is valid after the
rising edge of the final WE pulse in the command
sequence.
I/O2 toggles when the system reads at addresses within
those sectors that have been selected for erasure. (The
system may use either OE or CE to control the read
cycles.) But I/O2 cannot distinguish whether the sector is
actively erasing or is erase-suspended. I/O6, by comparison,
indicates whether the device is actively erasing, or is in
Erase Suspend, but cannot distinguish which sectors are
selected for erasure. Thus, both status bits are required for
sector and mode information. Refer to Table 6 to compare
outputs for I/O2 and I/O6.
Figure 6 shows the toggle bit algorithm in flowchart form,
and the section " I/O2: Toggle Bit II" explains the algorithm.
See also the " I/O6: Toggle Bit I" subsection. Refer to the
Toggle Bit Timings figure for the toggle bit timing diagram.
The I/O2 vs. I/O6 figure shows the differences between I/O2
and I/O6 in graphical form.
I/O6: Toggle Bit I
Toggle Bit I on I/O6 indicates whether an Embedded
Program or Erase algorithm is in progress or complete, or
whether the device has entered the Erase Suspend mode.
Toggle Bit I may be read at any address, and is valid after
the rising edge of the final WE pulse in the command
sequence (prior to the program or erase operation), and
during the sector erase time-out.
During an Embedded Program or Erase algorithm operation,
successive read cycles to any address cause I/O6 to toggle.
(The system may use either OE or CE to control the read
cycles.) When the operation is complete, I/O6 stops toggling.
After an erase command sequence is written, if all sectors
selected for erasing are protected, I/O6 toggles for
approximately 100µs, then returns to reading array data. If
not all selected sectors are protected, the Embedded Erase
algorithm erases the unprotected sectors, and ignores the
selected sectors that are protected.
The system can use I/O6 and I/O2 together to determine
whether a sector is actively erasing or is erase-suspended.
When the device is actively erasing (that is, the Embedded
Erase algorithm is in progress), I/O6 toggles. When the
device enters the Erase Suspend mode, I/O6 stops toggling.
However, the system must also use I/O2 to determine which
sectors are erasing or erase-suspended. Alternatively, the
system can use I/O7 (see the subsection on " I/O7 : Data
Polling").
If a program address falls within a protected sector, I/O6
toggles for approximately 2µs after the program command
sequence is written, then returns to reading array data.
I/O6 also toggles during the erase-suspend-program mode,
and stops toggling once the Embedded Program algorithm
is complete.
The Write Operation Status table shows the outputs for
Toggle Bit I on I/O6. Refer to Figure 6 for the toggle bit
algorithm, and to the Toggle Bit Timings figure in the "AC
Characteristics" section for the timing diagram. The I/O2 vs.
I/O6 figure shows the differences between I/O2 and I/O6 in
graphical form. See also the subsection on " I/O2: Toggle Bit
II".
PRELIMINARY
(October, 2002, Version 0.2)
Reading Toggle Bits I/O6, I/O2
Refer to Figure 6 for the following discussion. Whenever the
system initially begins reading toggle bit status, it must read
I/O7 - I/O0 at least twice in a row to determine whether a
toggle bit is toggling. Typically, a system would note and
store the value of the toggle bit after the first read. After the
second read, the system would compare the new value of
the toggle bit with the first. If the toggle bit is not toggling,
the device has completed the program or erase operation.
The system can read array data on I/O7 - I/O0 on the
following read cycle.
However, if after the initial two read cycles, the system
determines that the toggle bit is still toggling, the system
also should note whether the value of I/O5 is high (see the
section on I/O5). If it is, the system should then determine
again whether the toggle bit is toggling, since the toggle bit
may have stopped toggling just as I/O5 went high. If the
toggle bit is no longer toggling, the device has successfully
completed the program or erase operation. If it is still
toggling, the device did not complete the operation
successfully, and the system must write the reset command
to return to reading array data.
The remaining scenario is that the system initially
determines that the toggle bit is toggling and I/O5 has not
gone high. The system may continue to monitor the toggle
bit and I/O5 through successive read cycles, determining the
status as described in the previous paragraph. Alternatively,
it may choose to perform other system tasks. In this case,
the system must start at the beginning of the algorithm when
it returns to determine the status of the operation (top of
Figure 6).
18
AMIC Technology, Inc.
A29L400 Series
I/O5: Exceeded Timing Limits
I/O5 indicates whether the program or erase time has
exceeded a specified internal pulse count limit. Under these
conditions I/O5 produces a "1." This is a failure condition
that indicates the program or erase cycle was not
successfully completed.
The I/O5 failure condition may appear if the system tries to
program a "1 "to a location that is previously programmed to
"0." Only an erase operation can change a "0" back to a "1."
Under this condition, the device halts the operation, and
when the operation has exceeded the timing limits, I/O5
produces a "1."
Under both these conditions, the system must issue the
reset command to return the device to reading array data.
START
Read I/O7-I/O0
Read I/O7-I/O0
(Note 1)
I/O3: Sector Erase Timer
After writing a sector erase command sequence, the
system may read I/O3 to determine whether or not an erase
operation has begun. (The sector erase timer does not
apply to the chip erase command.) If additional sectors are
selected for erasure, the entire time-out also applies after
each additional sector erase command. When the time-out
is complete, I/O3 switches from "0" to "1." The system may
ignore I/O3 if the system can guarantee that the time
between additional sector erase commands will always be
less than 50µs. See also the "Sector Erase Command
Sequence" section.
After the sector erase command sequence is written, the
system should read the status on I/O7 ( Data Polling) or
I/O6 (Toggle Bit I) to ensure the device has accepted the
command sequence, and then read I/O3. If I/O3 is "1", the
internally controlled erase cycle has begun; all further
commands (other than Erase Suspend) are ignored until
the erase operation is complete. If I/O3 is "0", the device will
accept additional sector erase commands. To ensure the
command has been accepted, the system software should
check the status of I/O3 prior to and following each
subsequent sector erase command. If I/O3 is high on the
second status check, the last command might not have
been accepted. Table 6 shows the outputs for I/O3.
Toggle Bit
= Toggle ?
No
Yes
No
I/O5 = 1?
Yes
Read I/O7 - I/O0
Twice
Toggle Bit
= Toggle ?
(Notes 1,2)
No
Yes
Program/Erase
Operation Not
Commplete, Write
Reset Command
Program/Erase
Operation Complete
Notes :
1. Read toggle bit twice to determine whether or not it is
toggling. See text.
2. Recheck toggle bit because it may stop toggling as I/O5
changes to "1". See text.
Figure 6. Toggle Bit Algorithm
PRELIMINARY
(October, 2002, Version 0.2)
19
AMIC Technology, Inc.
A29L400 Series
Table 6. Write Operation Status
I/O7
Operation
I/O6
(Note 1)
Standard
Mode
Erase
Suspend
Mode
Embedded Program Algorithm
Embedded Erase Algorithm
Reading within Erase
Suspended Sector
Reading within Non-Erase
Suspended Sector
Erase-Suspend-Program
I/O5
I/O3
(Note 2)
I/O2
RY/ BY
(Note 1)
I/O7
Toggle
0
N/A
No toggle
0
0
Toggle
0
1
Toggle
0
1
No toggle
0
N/A
Toggle
1
Data
Data
Data
Data
Data
1
I/O7
Toggle
0
N/A
N/A
0
Notes:
1. I/O7 and I/O2 require a valid address when reading status information. Refer to the appropriate subsection for further
details.
2. I/O5 switches to “1” when an Embedded Program or Embedded Erase operation has exceeded the maximum timing
limits. See “I/O5: Exceeded Timing Limits” for more information.
Maximum Negative Input Overshoot
20ns
20ns
+0.8V
-0.5V
-2.0V
20ns
Maximum Positive Input Overshoot
20ns
VCC+2.0V
VCC+0.5V
2.0V
20ns
PRELIMINARY
(October, 2002, Version 0.2)
20ns
20
AMIC Technology, Inc.
A29L400 Series
DC Characteristics
CMOS Compatible (TA=0°°C to 70°°C or -45°°C to +85°°C)
Parameter
Parameter Description
Symbol
ILI
Input Load Current
ILIT
ILO
A9 Input Load Current
Output Leakage Current
Test Description
ICC2
ICC3
ICC4
ICC5
VIL
VIH
VID
VOL
VOH1
VOH2
VCC Active Read Current
(Notes 1, 2)
VCC Active Write (Program/Erase)
Current (Notes 2, 3, 4)
VCC Standby Current (Note 2)
VCC Standby Current During Reset
(Note 2)
Automatic Sleep Mode
(Note 2, 4, 5)
Input Low Level
Input High Level
Voltage for Autoselect and
Temporary Unprotect Sector
Output Low Voltage
Output High Voltage
Typ.
VIN = VSS to VCC. VCC = VCC Max
VCC = VCC Max, A9 =12.5V
VOUT = VSS to VCC. VCC = VCC Max
Max.
Unit
±1.0
35
µA
±1.0
µA
µA
5 MHz
4
10
1 MHz
2
4
CE = VIL, OE = VIH
5 MHz
4
10
Word Mode
1 MHz
2
4
CE = VIL, OE =VIH
20
30
mA
CE = VIH, RESET = VCC ± 0.3V
0.2
5
µA
RESET = VSS ± 0.3V
0.2
5
µA
VIH = VCC ± 0.3V; VIL = VSS ± 0.3V
0.2
5
µA
-0.5
0.7 x VCC
0.8
VCC + 0.3
V
11.5
12.5
V
0.45
V
V
V
CE = VIL, OE = VIH
Byte Mode
ICC1
Min.
VCC = 3.3 V
IOL = 4.0mA, VCC = VCC Min
IOH = -2.0 mA, VCC = VCC Min
IOH = -100 µA, VCC = VCC Min
0.85 x VCC
VCC - 0.4
mA
V
Notes:
1. The ICC current listed is typically less than 2 mA/MHz, with OE at VIH. Typical VCC is 3.0V.
2. Maximum ICC specifications are tested with VCC = VCC max.
3. ICC active while Embedded Algorithm (program or erase) is in progress.
4. Automatic sleep mode enables the low power mode when addresses remain stable for tACC + 30ns. Typical sleep mode
current is 200nA.
5. Not 100% tested.
PRELIMINARY
(October, 2002, Version 0.2)
21
AMIC Technology, Inc.
A29L400 Series
DC Characteristics (continued)
Zero Power Flash
Supply Current in mA
25
20
15
10
5
0
0
500
1000
1500
2000
2500
3000
3500
4000
Time in ns
Note: Addresses are switching at 1MHz
ICC1 Current vs. Time (Showing Active and Automatic Sleep Currents)
10
3.6V
8
Supply Current in mA
2.7V
6
4
2
0
1
2
3
4
5
Frequency in MHz
Note : T = 25 °C
Typical ICC1 vs. Frequency
PRELIMINARY
(October, 2002, Version 0.2)
22
AMIC Technology, Inc.
A29L400 Series
AC Characteristics
Read Only Operations (TA=0°°C to 70°°C or -45°°C to +85°°C)
Parameter Symbols
Description
Test Setup
JEDEC
Std
tAVAV
tRC
Read Cycle Time (Note 1)
tAVQV
tACC
Address to Output Delay
tELQV
tCE
Chip Enable to Output Delay
tGLQV
tOE
Output Enable to Output Delay
tOEH
Output Enable Hold
Time (Note 1)
Speed
Unit
-70
-90
Min.
70
90
ns
CE = VIL
OE = VIL
Max.
70
90
ns
OE = VIL
Max.
70
90
ns
Max.
30
35
ns
Min.
0
0
ns
Min.
10
10
Max.
25
30
ns
25
30
ns
0
0
ns
Read
Toggle and
Data Polling
tEHQZ
tDF
Chip Enable to Output High Z
(Notes 1)
tGHQZ
tDF
Output Enable to Output High Z
(Notes 1)
tAXQX
tOH
Output Hold Time from Addresses,
CE or OE , Whichever Occurs First
(Note 1)
Min.
ns
Notes:
1. Not 100% tested.
2. See Test Conditions and Test Setup for test specifications.
Timing Waveforms for Read Only Operation
tRC
Addresses
Addresses Stable
tACC
CE
tDF
tOE
OE
tOEH
WE
tCE
tOH
High-Z
Output
Output Valid
High-Z
RESET
0V
RY/BY
PRELIMINARY
(October, 2002, Version 0.2)
23
AMIC Technology, Inc.
A29L400 Series
AC Characteristics
Hardware Reset (RESET ) (TA=0°°C to 70°°C or -45°°C to +85°°C)
Parameter
JEDEC
Std
Description
Test Setup
All Speed Options
Unit
tREADY
RESET Pin Low (During Embedded
Algorithms) to Read or Write (See Note)
Max
20
µs
tREADY
RESET Pin Low (Not During Embedded
Algorithms) to Read or Write (See Note)
Max
500
ns
RESET Pulse Width
RESET High Time Before Read (See Note)
RY/ BY Recovery Time
RESET Low to Standby Mode
Min
500
ns
Min
50
ns
Min
0
ns
Min
20
µs
tRP
tRH
tRB
tRPD
Note: Not 100% tested.
RESET Timings
RY/BY
CE, OE
tRH
RESET
tRP
tReady
Reset Timings NOT during Embedded Algorithms
Reset Timings during Embedded Algorithms
~
~ ~
~
tReady
RY/BY
tRB
CE, OE
~
~
RESET
tRP
PRELIMINARY
(October, 2002, Version 0.2)
24
AMIC Technology, Inc.
A29L400 Series
Temporary Sector Unprotect (TA=0°°C to 70°°C or -45°°C to +85°°C)
Parameter
JEDEC
Std
tVIDR
tRSP
Description
All Speed Options
Unit
VID Rise and Fall Time (See Note)
Min
500
ns
RESET Setup Time for Temporary Sector
Unprotect
Min
4
µs
Note: Not 100% tested.
Temporary Sector Unprotect Timing Diagram
~
~
12V
0 or 3V
0 or 3V
RESET
tVIDR
Program or Erase Command Sequence
tVIDR
CE
~
~
WE
RY/BY
PRELIMINARY
(October, 2002, Version 0.2)
~ ~
~
~
tRSP
25
AMIC Technology, Inc.
A29L400 Series
AC Characteristics
Word/Byte Configuration ( BYTE ) (TA=0°°C to 70°°C or -45°°C to +85°°C)
Parameter
JEDEC
Description
All Speed Options
Std
-70
tELFL/tELFH
Unit
-90
CE to BYTE Switching Low or High
Max
5
ns
tFLQZ
BYTE Switching Low to Output High-Z
Max
25
30
ns
tHQV
BYTE Switching High to Output Active
Min
70
90
ns
BYTE Timings for Read Operations
CE
OE
BYTE
tELFL
BYTE
Switching
from word to
byte mode
Data Output
(I/O 0-I/O 14)
I/O0-I/O14
I/O 15
Output
I/O15 (A-1)
tELFH
Data Output
(I/O 0-I/O 7)
Address Input
tFLQZ
BYTE
BYTE
Switching
from byte to
word mode
I/O0-I/O14
Data Output
(I/O 0-I/O 7)
I/O15 (A-1)
Address Input
Data Output
(I/O 0-I/O 14)
I/O 15
Output
tFHQV
BYTE Timings for Write Operations
CE
The falling edge of the last WE signal
WE
BYTE
tSET
(tAS)
tHOLD(tAH)
Note:
Refer to the Erase/Program Operations table for tAS and tAH specifications.
PRELIMINARY
(October, 2002, Version 0.2)
26
AMIC Technology, Inc.
A29L400 Series
AC Characteristics
Erase and Program Operations (TA=0°°C to 70°°C or -45°°C to +85°°C)
Parameter
Description
Speed
Unit
JEDEC
Std
tAVAV
tWC
Write Cycle Time (Note 1)
Min.
tAVWL
tAS
Address Setup Time
Min.
tWLAX
tAH
Address Hold Time
Min.
45
45
ns
tDVWH
tDS
Data Setup Time
Min.
35
45
ns
tWHDX
tDH
Data Hold Time
Min.
0
ns
tOES
Output Enable Setup Time
Min.
0
ns
Read Recover Time Before Write
Min.
0
ns
tGHWL
tGHWL
-70
-90
70
90
0
ns
ns
( OE high to WE low)
tELWL
tCS
CE Setup Time
Min.
0
ns
tWHEH
tCH
CE Hold Time
Min.
0
ns
tWLWH
tWP
Write Pulse Width
Min.
tWHWL
tWPH
Write Pulse Width High
Min.
30
Byte
Typ.
5
tWHWH1
tWHWH1
Word
Typ.
7
Sector Erase Operation (Note 2)
Typ.
0.7
sec
tvcs
VCC Set Up Time (Note 1)
Min.
50
µs
tRB
Recovery Time from RY/ BY
Min
0
ns
Program/Erase Valid to RY/ BY Delay
Min
90
ns
tWHWH2
tWHWH2
tBUSY
Byte Programming Operation
(Note 2)
35
35
ns
ns
µs
Notes:
1. Not 100% tested.
2. See the "Erase and Programming Performance" section for more information.
PRELIMINARY
(October, 2002, Version 0.2)
27
AMIC Technology, Inc.
A29L400 Series
Timing Waveforms for Program Operation
Read Status Data (last two cycles)
Program Command Sequence (last two cycles)
PA
555h
PA
PA
~
~ ~
~
Addresses
tAS
~
~
tWC
tAH
CE
~
~
tCH
OE
tWP
~
~
tWHWH1
WE
tCS
tWPH
Data
A0h
tDH
~
~
tDS
PD
tBUSY
Status
DOUT
tRB
~
~ ~
~
RY/BY
tVCS
VCC
Note :
1. PA = program addrss, PD = program data, Dout is the true data at the program address.
2. Illustration shows device in word mode.
PRELIMINARY
(October, 2002, Version 0.2)
28
AMIC Technology, Inc.
A29L400 Series
Timing Waveforms for Chip/Sector Erase Operation
Erase Command Sequence (last two cycles)
~
~
tWC
SA
2AAh
VA
555h for chip erase
tAH
VA
~
~ ~
~
Addresses
Read Status Data
tAS
~
~
CE
OE
tCH
~
~
tWP
WE
tWPH
tWHWH2
tCS
Data
55h
tDH
30h
~
~
tDS
10h for chip erase
tBUSY
In
Progress
Complete
tRB
~
~
RY/BY
~
~
tVCS
VCC
Note :
1. SA = Sector Address (for Sector Erase), VA = Valid Address for reading status data (see "Write Operaion Ststus").
2. Illustratin shows device in word mode.
PRELIMINARY
(October, 2002, Version 0.2)
29
AMIC Technology, Inc.
A29L400 Series
Timing Waveforms for Data Polling (During Embedded Algorithms)
~
~
tRC
Addresses
VA
tACC
CE
VA
~
~ ~
~
VA
tCE
tCH
~
~
tOE
OE
tDF
~
~
tOEH
WE
tOH
Status Data
~
~
Complement
Complement
True
Valid Data
~
~
High-Z
I/O7
Status Data
True
Valid Data
High-Z
I/O0 - I/O6
High-Z
tBUSY
~
~
RY/BY
Note : VA = Valid Address. Illustation shows first status cycle after command sequence, last status read cycle, and array data
read cycle.
PRELIMINARY
(October, 2002, Version 0.2)
30
AMIC Technology, Inc.
A29L400 Series
Timing Waveforms for Toggle Bit (During Embedded Algorithms)
~
~
tRC
Addresses
VA
tACC
CE
VA
VA
~
~ ~
~
VA
tCE
tCH
tOE
~
~
OE
tDF
~
~
tOEH
WE
I/O6 , I/O2
High-Z
tBUSY
Valid Status
Valid Status
(first read)
(second read)
~
~
tOH
Valid Status
Valid Data
(stop togging)
~
~
RY/BY
Note: VA = Valid Address; not required for I/O6. Illustration shows first two status cycle after command sequence, last status
read cycle, and array data read cycle.
PRELIMINARY
(October, 2002, Version 0.2)
31
AMIC Technology, Inc.
A29L400 Series
Timing Waveforms for Sector Protect/Unprotect
VID
VIH
~
~
RESET
SA, A6,
A1, A0
Valid*
Valid*
~
~
Valid*
Verify
~
~
Sector Protect/Unprotect
60h
60h
40h
Status
~
~
Data
1us
CE
Sector Protect:150us
Sector Unprotect:15ms
WE
OE
Note : For sector protect, A6=0, A1=1, A0=0. For sector unprotect, A6=1, A1=1, A0=0
PRELIMINARY
(October, 2002, Version 0.2)
32
AMIC Technology, Inc.
A29L400 Series
Timing Waveforms for I/O2 vs. I/O6
~
~
~
~
~
~
Erase
~
~
~
~
~
~
Erase Suspend
Read
~
~
~
~
~
~
I/O2
~
~
I/O6
Erase
Suspend
Program
Erase Suspend
Read
~
~
Erase
Erase
Resume
~
~
WE
Enter Erase
Suspend Program
~
~
~
~
Erase
Suspend
~
~
Enter
Embedded
Erasing
Erase
Complete
I/O2 and I/O6 toggle with OE and CE
Note : Both I/O6 and I/O2 toggle with OE or CE. See the text on I/O6 and I/O2 in the section "Write Operation Status" for
more information.
AC Characteristics
Erase and Program Operations
Alternate CE Controlled Writes (TA=0°C to 70°C or -45°C to +85°C)
Parameter
Description
Speed
JEDEC
Std
tAVAV
tWC
Write Cycle Time (Note 1)
Min.
tAVEL
tAS
Address Setup Time
Min.
tELAX
tAH
Address Hold Time
Min.
45
45
ns
tDVEH
tDS
Data Setup Time
Min.
35
45
ns
tEHDX
-70
Unit
-90
70
90
0
ns
ns
tDH
Data Hold Time
Min.
0
ns
tOES
Output Enable Setup Time
Min.
0
ns
tGHEL
tGHEL
Read Recover Time Before Write
( OE High to WE Low)
Min.
0
ns
tWLEL
tWS
WE Setup Time
Min.
0
ns
tEHWH
tWH
WE Hold Time
Min.
0
ns
tELEH
tCP
CE Pulse Width
Min.
tEHEL
tCPH
CE Pulse Width High
Min.
30
ns
tWHWH1
tWHWH1
Byte
Typ.
5
µs
Word
Typ.
7
Typ.
0.7
tWHWH2
tWHWH2
Programming Operation
(Note 2)
Sector Erase Operation (Note 2)
35
35
ns
sec
Notes:
3. Not 100% tested.
4. See the "Erase and Programming Performance" section for more information.
PRELIMINARY
(October, 2002, Version 0.2)
33
AMIC Technology, Inc.
A29L400 Series
Timing Waveforms for Alternate CE Controlled Write Operation
PA for program
SA for sector erase
555 for chip erase
Data Polling
~
~
555 for program
2AA for erase
PA
~
~
Addresses
tAS
tWH
tAH
~
~
tWC
~
~
WE
OE
tWHWH1 or 2
~
~
tCP
tBUSY
tCPH
CE
tWS
tDS
Data
tRH
A0 for program
55 for erase
PD for program
30 for sector erase
10 for chip erase
I/O 7
DOUT
~
~
~
~
tDH
RESET
~
~
RY/BY
Note :
1. PA = Program Address, PD = Program Data, SA = Sector Address, I/O 7 = Complement of Data Input, D OUT = Array Data.
2. Figure indicates the last two bus cycles of the command sequence.
Erase and Programming Performance
Parameter
Sector Erase Time
Chip Erase Time
Byte Programming Time
Typ. (Note 1)
1.0
10
35
Max. (Note 2)
8
Unit
sec
sec
300
µs
12
500
Byte Mode
11
33
µs
sec
Word Mode
7.2
21.6
sec
Word Programming Time
Chip Programming Time
(Note 3)
Comments
Excludes 00h programming
prior to erasure
Excludes system-level
overhead (Note 5)
Notes:
1. Typical program and erase times assume the following conditions: 25°C, 3.0V VCC, 10,000 cycles. Additionally,
programming typically assumes checkerboard pattern.
2. Under worst case conditions of 90°C, VCC = 2.7V, 100,000 cycles.
3. The typical chip programming time is considerably less than the maximum chip programming time listed, since most bytes
program faster than the maximum byte program time listed. If the maximum byte program time given is exceeded, only
then does the device set I/O5 = 1. See the section on I/O5 for further information.
4. In the pre-programming step of the Embedded Erase algorithm, all bytes are programmed to 00h before erasure.
5. System-level overhead is the time required to execute the four-bus-cycle command sequence for programming. See
Table 5 for further information on command definitions.
6. The device has a guaranteed minimum erase and program cycle endurance of 10,000 cycles.
PRELIMINARY
(October, 2002, Version 0.2)
34
AMIC Technology, Inc.
A29L400 Series
Latch-up Characteristics
Description
Min.
Max.
Input Voltage with respect to VSS on all I/O pins
-1.0V
VCC+1.0V
-100 mA
+100 mA
-1.0V
12.5V
VCC Current
Input voltage with respect to VSS on all pins except I/O pins
(including A9, OE and RESET )
Includes all pins except VCC. Test conditions: VCC = 5.0V, one pin at time.
TSOP and SOP Pin Capacitance
Parameter Symbol
CIN
Parameter Description
Input Capacitance
COUT
Output Capacitance
CIN2
Control Pin Capacitance
Test Setup
Typ.
Max.
Unit
VIN=0
6
7.5
pF
VOUT=0
8.5
12
pF
VIN=0
7.5
9
pF
Notes:
1. Sampled, not 100% tested.
2. Test conditions TA = 25°C, f = 1.0MHz
Data Retention
Parameter
Test Conditions
Min
Unit
150°C
10
Years
125°C
20
Years
Minimum Pattern Data Retention Time
PRELIMINARY
(October, 2002, Version 0.2)
35
AMIC Technology, Inc.
A29L400 Series
Test Conditions
Test Specifications
Test Condition
-70
-90
Output Load
Unit
1 TTL gate
Output Load Capacitance, CL(including jig capacitance)
30
100
pF
Input Rise and Fall Times
5
5
ns
Input Pulse Levels
0.0 - 3.0
0.0 - 3.0
V
Input timing measurement reference levels
1.5
1.5
V
Output timing measurement reference levels
1.5
1.5
V
Test Setup
3.3 V
2.7 KΩ
Device
Under
Test
CL
PRELIMINARY
(October, 2002, Version 0.2)
Diodes = IN3064 or Equivalent
6.2 KΩ
36
AMIC Technology, Inc.
A29L400 Series
Ordering Information
Top Boot Sector Flash
Part No.
Access Time
(ns)
Program/Erase
Current
Typ. (mA)
Active Read
Current
Typ. (mA)
Standby
Current
Typ. (µA)
A29L400TM-70
Package
44Pin SOP
A29L400TV-70
70
4
20
0.2
48Pin TSOP
A29L400TG-70
48-ball TFBGA
A29L400TM-90
44Pin SOP
A29L400TV-90
48Pin TSOP
A29L400TV-90U
90
4
20
0.2
48Pin TSOP
A29L400TG-90
48-ball TFBGA
A29L400TG-90U
48-ball TFBGA
Bottom Boot Sector Flash
Part No.
Access Time
(ns)
Active Read
Current
Typ. (mA)
Program/Erase
Current
Typ. (mA)
Standby
Current
Typ. (µA)
A29L400UM-70
A29L400UV-70
Package
44Pin SOP
70
4
20
0.2
48Pin TSOP
A29L400UG-70
48-ball TFBGA
A29L400UM-90
44Pin SOP
A29L400UV-90
48Pin TSOP
A29L400UV-90U
90
4
20
0.2
48Pin TSOP
A29L400UG-90
48-ball TFBGA
A29L400UG-90U
48-ball TFBGA
PRELIMINARY
(October, 2002, Version 0.2)
37
AMIC Technology, Inc.
A29L400 Series
Package Information
SOP 44L Outline Dimensions
unit: inches/mm
23
Gauge Plane
HE
E
44
θ
L
0.010"
1
b 22
Detail F
y
e
A
A1
S
D
A2
C
D
L1
Seating Plane
See Detail F
Symbol
Dimensions in inches
Dimensions in mm
Min
Nom
Max
A
-
-
0.118
A1
0.004
-
-
A2
0.103
0.106
0.109
b
0.013
0.016
0.020
C
0.007
0.008
0.010
0.18
0.20
0.25
D
-
1.122
1.130
-
28.50
28.70
E
0.490
0.496
0.500
12.45
12.60
12.70
e
-
0.050
-
-
1.27
-
HE
0.620
0.631
0.643
15.75
16.03
16.33
L
0.024
0.032
0.040
0.61
0.80
1.02
L1
-
0.0675
-
-
1.71
-
S
-
-
0.045
-
-
1.14
y
-
-
0.004
-
-
0.10
0°
-
0°
-
8°
θ
8°
Min
Nom
Max
-
-
3.00
0.10
-
-
2.62
2.69
2.77
0.33
0.40
0.50
Notes:
1. The maximum value of dimension D includes end flash.
2. Dimension E does not include resin fins.
3. Dimension S includes end flash.
PRELIMINARY
(October, 2002, Version 0.2)
38
AMIC Technology, Inc.
A29L400 Series
Package Information
TSOP 48L (Type I) Outline Dimensions
unit: inches/mm
1
48
24
25
y
D1
A1
A2 A
D
0.25
c
S
e
E
b
D
Detail "A"
L
θ
Detail "A"
Symbol
Dimensions in inches
Min
Nom
Max
Dimensions in mm
Min
Nom
Max
A
-
-
0.047
-
-
1.20
A1
0.002
-
0.006
0.05
-
0.15
A2
0.037
0.039
0.042
0.94
1.00
1.06
b
0.007
0.009
0.011
0.18
0.22
0.27
c
0.004
-
0.008
0.12
-
0.20
D
0.779
0.787
0.795
19.80
20.00
20.20
D1
0.720
0.724
0.728
18.30
18.40
18.50
E
-
0.472
0.476
-
12.00
12.10
0.024
0.40
e
L
0.020 BASIC
0.016
S
0.020
0.50 BASIC
0.011 Typ.
0.50
0.60
0.28 Typ.
y
-
-
0.004
-
-
0.10
θ
0°
-
8°
0°
-
8°
Notes:
1. The maximum value of dimension D includes end flash.
2. Dimension E does not include resin fins.
3. Dimension S includes end flash.
PRELIMINARY
(October, 2002, Version 0.2)
39
AMIC Technology, Inc.
A29L400 Series
Package Information
48LD CSP (6 x 8 mm) Outline Dimensions
unit: mm
(48TFBGA)
TOP VIEW
BOTTOM VIEW
b
1 2 3 4 5 6
E
E1
e
H
G
F
E
D
C
B
A
H
G
F
E
D
C
B
A
e
D1
Ball*A1 CORNER
D
A
SIDE VIEW
SEATING PLANE
A1
C
0.10 C
Symbol
A
A1
b
D
D1
e
E
E1
PRELIMINARY
(October, 2002, Version 0.2)
Dimensions in mm
Nom.
Min.
0.20
0.30
5.90
0.25
6.00
4.00 BSC
0.80
7.90
8.00
5.60 BSC
40
Max.
1.20
0.30
0.40
6.10
8.10
AMIC Technology, Inc.