Rainbow-electronics AT27C2048 Manual de usuario descargar pdf (Pagina 3)

AT27C2048

Note: Maximum 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 +7.0V for pulses of less than 20 ns.

Notes: 1. X can be V

or V

2. Refer to the Programming characteristics.

3. V

= 12.0 ± 0.5V.

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

), except A9, which is set to V

, and A0, which is toggled

low (V

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

) to select the Device Code word.

5. Standby V

current (I

) is specified with V

= V

. V

> V

will cause a slight increase in I

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)

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 condi-

tions beyond those indicated in the operational sec-

tions of this specification is not implied. Exposure to

absolute maximum rating conditions for extended

periods may affect device reliability.

Operating Modes

Mode/Pin CE OE PGM Ai V

Outputs

Read V

(1)

Ai X

(1)

OUT

Output Disable X V

X X X High Z

Standby V

XX X X

(5)

High Z

Rapid Program

(2)

Ai V

PGM Verify V

Ai V

OUT

PGM Inhibit V

XX X V

High Z

Product Identification

(4)

A9 = V

(3)

A0 = V

or V

A1 - A16 = V

Identification Code

DC and AC Operating Conditions for Read Operation

AT27C2048

-55 -70 -90 -12 -15

Operating

Temperature (Case)

Com. 0°C - 70°C0°C - 70°C0°C - 70°C0°C - 70°C0°C - 70°C

Ind. -40°C - 85°C-40°C - 85°C-40°C - 85°C-40°C - 85°C-40°C - 85°C

Power Supply 5V ± 10% 5V ± 10% 5V ± 10% 5V ± 10% 5V ± 10%

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

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