AT27LV040A View Datasheet(PDF) - Atmel Corporation

Part Name

Description

Manufacturer

AT27LV040A

4-Megabit (512K x 8) Low Voltage OTP EPROM

Atmel Corporation 

9. AC Characteristics for Read Operation

VCC = 3.0V to 3.6V and 4.5V to 5.5V

Symbol

tACC(3)

tCE(2)

tOE(2)(3)

tDF(4)(5)

tOH

Parameter

Address to Output Delay

CE to Output Delay

OE to Output Delay

OE or CE High to Output Float, Whichever

Occurred First

Output Hold from Address, CE or OE,

Whichever Occurred First

Condition

CE = OE = VIL

OE = VIL

CE = VIL

10. AC Waveforms for Read Operation(1)

AT27LV040A-90

Min

Max

90

90

50

60

0

Units

ns

ns

ns

ns

ns

Notes:

1. Timing measurement references are 0.8V and 2.0V. Input AC drive levels are 0.45V and 2.4V. See Input Test Waveforms

and Measurement Levels.

2. OE may be delayed up to tCE - tOE after the falling edge of CE without impact on tCE.

3. OE 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.

6 AT27LV040A

0557D–EPROM–12/07

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