AT27C512R-12 View Datasheet(PDF) - Atmel Corporation
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Description
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AT27C512R-12 Datasheet PDF : 9 Pages
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Block Diagram
AT27C512R
Absolute Maximum Ratings*
Temperature Under Bias ................ -55°C to +125°C
Storage Temperature...................... -65°C to +150°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)
VPP Supply Voltage with
Respect to Ground....................... -2.0V to +14.0V (1)
*NOTICE: Stresses beyond those listed under “Absolute Maxi-
mum Ratings” 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 indi-
cated in the operational sections of this specification is not
implied. Exposure to absolute maximum rating conditions
for extended periods may affect device reliability.
Note:
1. Minimum voltage is -0.6V dc which may undershoot
to -2.0V for pulses of less than 20 ns. Maximum out-
put pin voltage is VCC + 0.75V dc which may over-
shoot to +7.0V for pulses of less than 20 ns.
Operating Modes
Mode \ Pin
CE
Read
VIL
Output Disable
VIL
Standby
VIH
Rapid Program (2)
VIL
PGM Inhibit
VIH
Product Identification (4)
VIL
Notes: 1. X can be VIL or VIH.
2. Refer to Programming Characteristics.
3. VH = 12.0 ± 0.5V.
OE/VPP
VIL
VIH
X (1)
Ai
Ai
X (1)
X
Outputs
DOUT
High Z
High Z
VPP
Ai
DIN
VPP
X (1)
High Z
A9 = VH (3)
VIL
A0 = VIH or VIL
Identification Code
A1 - A15 = VIL
4. 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 Manufacturer’s Identification byte
and high (VIH) to select the Device Code byte.
3-137
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