A29002 AMIC Technology, A29002 Datasheet - Page 4

• Manufacturer Part Number: A29002
• Description: 256K X 8 Bit CMOS 5.0 Volt-only/ Boot Sector Flash Memory
• Manufacturer: AMIC Technology

Absolute Maximum Ratings*
Ambient Operating Temperature . . . . . -55 C to + 125 C
Storage Temperature . . . . . . . . . . . . . . -65 C to + 125 C
Ground to VCC . . . . . . . . . . . . . . . . . . . . . . -2.0V to 7.0V
Output Voltage (Note 1) . . . . . . . . . . . . . . . -2.0V to 7.0V
A9,
All other pins (Note 1) . . . . . . . . . . . . . . . . . -2.0V to 7.0V
Output Short Circuit Current (Note 3) . . . . . . . . . . 200mA
Notes:
1. Minimum DC voltage on input or I/O pins is -0.5V.
2. Minimum DC input voltage on A9 pins is -0.5V. During
3. No more than one output is shorted at a time. Duration
Device Bus Operations
Legend:
L = Logic Low = V
Note: 1. See the "Sector Protection/Unprotection" section and Temporary Sector Unprotect for more information.
(February, 2002, Version 1.0)
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
Write
TTL Standby
Read
CMOS Standby
Output Disable
Reset
Temporary Sector Unprotect (Note)
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.
of the short circuit should not be greater than one
second.
voltage transitions, A9,
VSS to -2.0V for periods of up to 20ns. Maximum DC
input voltage on A9 and
overshoot to 13.5V for periods up to 20ns. ( RESET is
N/A on A290021)
OE
2. This function is not available on A290021.
& RESET (Note 2) . . . . . . . . . . . -2.0V to 12.5V
Operation
IL
, H = Logic High = V
OE
and RESET may overshoot
OE
Table 1. A29002/A290021 Device Bus Operations
is +12.5V which may
IH
, V
VCC
ID
= 12.0 0.5V, X = Don't Care, D
CE
H
L
L
L
X
X
0.5 V
OE
H
X
X
H
X
X
L
4
*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.
Operating Ranges
Commercial (C) Devices
Ambient Temperature (T
VCC Supply Voltages
VCC for
Operating ranges define those limits between which the
functionally of the device is guaranteed.
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.
WE
H
X
X
H
X
X
L
IN
(N/A A290021)
10% devices . . . . . . . . . . . . . . +4.5V to +5.5V
= Data In, D
VCC
VCC
RESET
V
H
H
H
L
ID
0.5 V
0.5 V
A29002/A290021 Series
OUT
A
) . . . . . . . . . . . . . . 0 C to +70 C
= Data Out, A
AMIC Technology, Inc.
A0 – A17
A
A
X
X
X
X
X
IN
IN
IN
= Address In
I/O
High-Z
High-Z
High-Z
High-Z
D
0
D
OUT
X
- I/O
IN
7