27C040 datasheet(3/13 Pages) ATMEL

3 / 13 page

AT27C040

0189F–EPROM–4/03

Notes:

1. X can be VIL or VIH.

2. Refer to Programming Characteristics

3. V

H = 12.0 ± 0.5V.

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 toggled

low (V

IL) to select the Manufacturer’s Identification byte and high (VIH) to select the Device Code byte.

Operating Modes

Mode/Pin

VPP

Outputs

Read

(1)

OUT

Output Disable

High Z

Standby

VIH

High Z

Rapid Program

(2)

PGM Verify

OUT

PGM Inhibit

VIH

XVPP

High Z

Product Identification

(4)

A9 = V

(3)

A0 = V

IH or VIL

A1 - A18 = VIL

Identification Code

Absolute Maximum Ratings*

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

*NOTICE:

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.

Storage Temperature ..................................... -65°C to +150°C

Voltage on Any Pin with

Respect to Ground ............................................-2.0V to +7.0V

Voltage on A9 with

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

VPP Supply Voltage with

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

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