AT27LV040A-12 View Datasheet(PDF) - Atmel Corporation

Part Name

Description

Manufacturer

AT27LV040A-12

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

Atmel Corporation 

AT27LV040A

AC Characteristics for Read Operation (VCC = 3.0V to 3.6V and 4.5V to 5.5V)

AT27LV040A

-12

-15

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

Min

Max

Min

Max Units

120

150 ns

120

150 ns

50

60 ns

40

50 ns

0

0

ns

Notes: 2, 3, 4, 5. - see AC Waveforms for Read Operation.

AC Waveforms for Read Operation (1)

= Preliminary Information

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 Measure-

ment 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.

3-119

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