AT27LV520(1998) View Datasheet(PDF) - Atmel Corporation

Part Name

Description

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AT27LV520
(Rev.:1998)

512K (64K x 8) Multiplexed Addresses/Outputs Low Voltage OTP EPROM

Atmel Corporation 

AT27LV520

AC Waveforms for Read Operation(1)

tALE

ALE

tCE

OE/VPP

AD7 - AD0

tDF

tOH

tAS

tAH tOE

ADDRESS IN

DATA OUT

tACC

A15 - A8

Notes: 1. Timing measurement reference levels for all speed grades are VOL = 0.8V and VOH = 2.0V. Input AC drive levels are VIL =

0.45V and VIH = 2.4V.

2. OE/VPP may be delayed up to tCE - tOE after the address is valid without impact on tCE.

3. OE/VPP may be delayed up to tACC - tOE after the address is valid without impact on tACC.

4. This parameter is only sampled and is not 100% tested.

5. Output float is defined as the point when data is no longer driven.

Input Test Waveforms and Measurement Levels

Output Test Load

tR, tF < 20 ns (10% to 90%)

Note: CL = 100 pF including jig

capacitance.

Pin Capacitance(Note:)

(f = 1 MHz, T = 25°C)

Typ

Max

Units

Conditions

CIN

4

6

pF

VIN = 0V

COUT

8

12

pF

VOUT = 0V

Note: Typical values for nominal supply voltage. This parameter is only sampled and is not 100% tested.

5

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