Rainbow-electronics AT27C512R Bedienungsanleitung PDF herunterladen (Seite 3)

AT27C512R

Block Diagram

Notes: 1. X can be V

or V

2. Refer to Programming Characteristics.

3. V

= 12.0 ± 0.5V.

4. Two identifier bytes may be selected. All Ai inputs are held low (V

), except A9 which is set to V

and A0 which is toggled low

) to select the Manufacturer’s Identification byte and high (V

) to select the Device Code byte.

Absolute Maximum Ratings*

Temperature Under Bias............................... -55°C to + 125°C

*NOTICE: Stresses beyond those listed under “Absolute Maxi-

mum Ratings” may cause permanent damage to

the device. This is a stress rating only and func-

tional operation of the device at these or any other

conditions beyond those indicated in the opera-

tional 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

output pin voltage is V

+ 0.75V dc which may

overshoot to +7.0 volts for pulses of less than 20 ns.

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)

Supply Voltage with

Respect to Ground ......................................-2.0V to + 14.0V

(1)

Operating Modes

Mode\Pin CE OE/V

Ai Outputs

Read V

Ai D

OUT

Output Disable V

(1)

High Z

Standby V

(1)

X High Z

Rapid Program

(2)

Ai D

PGM Inhibit V

(1)

High Z

Product Identification

(4)

A9 =V

(3)

A0 = V

or V

A1 - A15 = V

Identification Code

1 2 3 4 5 6 7 8 ... 11 12

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