at27bv400 ATMEL Corporation, at27bv400 Datasheet - Page 3

• Manufacturer Part Number: at27bv400
• Description: 4-megabit 256k 512k Unregulated Battery-voltage High Speed Eprom
• Manufacturer: ATMEL Corporation

Absolute Maximum Ratings*
Operating Modes
Notes:
Temperature Under Bias ................................ -55 C to +125 C
Storage Temperature ..................................... -65 C to +150 C
Voltage on Any Pin with
with Respect to Ground ..................................-2.0V to +7.0V
Voltage on A9 with
Respect to Ground ......................................-2.0V to +14.0V
V
Respect to Ground .......................................-2.0V to +14.0V
Mode/Pin
Read Word-wide
Read Byte-wide Upper
Read Byte-wide Lower
Output Disable
Standby
Rapid Program
PGM Verify
PGM Inhibit
Product Identification
PP
Supply Voltage with
1. X can be V
2. Read, output disable, and standby modes require, 2.7V
3. Refer to the programming characteristics tables in this data sheet.
4. V
5. Two identifier words may be selected. All Ai inputs are held low (V
6. Standby V
low (V
H
= 12.0
(3)
IL
) to select the Manufacturer’s Identification word and high (V
(5)
CC
IL
0.5V.
or V
current (I
IH.
SB
) is specified with V
X
CE
V
V
V
V
V
V
V
X
(1)
IH
IH
IL
IL
IL
IL
IL
OE
X
V
V
V
V
V
V
V
V
(1)
IH
IH
IH
IL
IL
IL
IL
IL
PP
= V
(1)
(1)
(1)
CC
. V
A0 = V
A1 - A17 = V
A9 = V
CC
V
> V
X
X
X
X
X
X
Ai
*NOTICE:
Note:
Ai
Ai
CC
IH
(1)
(1)
(1)
(1)
(1)
(1)
PP
or V
H
(4)
3.6V, or 4.5V
will cause a slight increase in I
IL
IL
IL
) except A9,which is set to V
IH
1.
) to select the Device Code word.
Stresses beyond those listed under “Absolute
Maximum Ratings” may cause permanent dam-
age to the device. This is a stress rating only and
functional operation of the device at these or any
other conditions beyond those indicated in the
operational sections of this specification is not
implied. Exposure to absolute maximum rating
conditions for extended periods may affect device
reliability.
Minimum voltage is -0.6V DC which undershoot
to -2.0V for pulses of less than 20 ns. Maximum
output pin voltage is Vcc + 0.75V DC which may
overshoot to + 7.0V for pulses of less than 20 ns.
BYTE/V
V
V
V
V
X
CC
V
V
V
V
X
PP
PP
PP
(6)
IH
IH
IL
IL
PP
5.5V.
O
D
D
D
0
OUT
OUT
OUT
SB.
-O
H
, and A0, which is toggled
Identification Code
7
Outputs
O
High Z
High Z
High Z
High Z
High Z
D
D
8
D
-O
OUT
OUT
IN
14
O
D
15
V
V
OUT
/A-1
IH
IL
3