AT27BV020-90JI View Datasheet(PDF) - Atmel Corporation

Part Name

Description

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AT27BV020-90JI

2-Megabit (256K x 8) Unregulated Battery-Voltage High Speed OTP EPROM

Atmel Corporation 

Block Diagram

AT27BV020

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)

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 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.

Note:

Minimum voltage is -0.6V DC which may undershoot to -

2.0V for pulses of less than 20 ns.Maximum output pin

voltage is VCC + 0.75V DC which may be exceeded if cer-

tain precautions are observed (consult application notes)

and which may overshoot to +7.0V for pulses of less than

20 ns.

Operating Modes

Mode / Pin

CE OE PGM

Ai

VPP VCC Outputs

Read(2)

VIL VIL

X(1)

Ai

X

VCC(2) DOUT

Output Disable(2)

X VIH

X

X

X

VCC(2) High Z

Standby(2)

VIH X

X

X

X

VCC(2) High Z

Rapid Program(3)

VIL VIH

VIL

Ai

VPP VCC(3) DIN

PGM Verify(3)

VIL VIL

VIH

Ai

VPP

VCC(3) DOUT

PGM Inhibit(3)

VIH X

X

X

VPP VCC(3) High Z

Product Identification(3)(5)

VIL VIL

X

A9 = VH(4)

A0 = VIH or VIL

A1 - A17 = VIL

X

VCC(3)

Identification

Code

Notes: 1. X Can be VIL or VIH.

2. Read, output disable, and standby modes require, 2.7V ≤ VCC ≤ 3.6V, or 4.5V ≤ VCC ≤ 5.5V.

3. Refer to Programming Characteristics. Programming modes requires 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 toggled low

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

3

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