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| AT27BV256_14 Datasheet, PDF (3/12 Pages) ATMEL Corporation – Dual voltage range operation | |||
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Atmel AT27BV256
4. Absolute maximum ratings*
Temperature under bias . . . . . . . . . . . . . . . -40°C to +85°C
Storage temperature . . . . . . . . . . . . . . . . .-65°C to +125°C
Voltage on any pin with
respect to ground . . . . . . . . . . . . . . . . . . . -2.0V to +7.0V (1)
Voltage on A9 with
respect to ground . . . . . . . . . . . . . . . . . -2.0V to +14.0V(1)
*NOTICE:
Stresses beyond those listed under âAbsolute
maximum ratingsâ may cause permanent damage 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.
VPP supply voltage with
respect to ground . . . . . . . . . . . . . . . . . . -2.0V to +14.0V(1)
Note:
1. Minimum voltage is -0.6V DC, which may undershoot to -2.0V for pulses of less than 20ns. Maximum output pin voltage is
VCC + 0.75V DC, which may be exceeded if certain precautions are observed (consult application notes), and which may
overshoot to +7.0V for pulses of less than 20ns.
5. DC and AC characterisitcs
Table 5-1. Operating modes
Mode/Pin
CE
OE
Ai
VPP
VCC
Outputs
Read(2)
VIL
VIL
Ai
VCC
VCC
DOUT
Output disable(2)
VIL
VIH
X(1)
VCC
VCC
High Z
Standby(2)
VIH
X
X
VCC
VCC
High Z
Rapid program(3)
VIL
VIH
Ai
VPP
VCC
DIN
PGM verify(3)
X
VIL
Ai
VPP
VCC
DOUT
Optional PGM verify(3)
VIL
VIL
Ai
VCC
VCC
DOUT
PGM inhibit(3)
VIH
VIH
X
VPP
VCC
High Z
Product identification(3)(5)
A9 = VH(4)
VIL
VIL
A0 = VIH or VIL
VCC
VCC
Identification code
A1 - A14 = VIL
Note:
1. X can be VIL or VIH.
2. Read, output disable, and standby modes require 2.7V ï£ VCC ï£ 3.6V or 4.5V ï£ VCC ï£ 5.5V.
3. Refer to programming characteristics. Programming modes require VCC = 6.5V.
4. VH = 12.0 ± 0.5V.
5. Two identifier bytes may be selected. All Ai inputs are held low (VIL) except A9, which is set to VH, and A0, which is tog-
gled low (VIL) to select the manufacturersâ identification byte and high (VIH) to select the device code byte.
Table 5-2. DC and AC operating conditions for read operation
Industrial operating temperature (case)
VCC power supply
Atmel AT27BV256-70
-40°C - 85°C
2.7V to 3.6V
5V ï± 10%
3
0601FâEPROMâ4/11
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