AT27BV1024 View Datasheet(PDF) - Atmel Corporation

Part Name

Description

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AT27BV1024

1-Megabit (64K x 16) Unregulated Battery-Voltage High-Speed OTP EPROM

Atmel Corporation 

9. AC Characteristics for Read Operation

VCC = 2.7V 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

10. AC Waveforms for Read Operation(1)

Condition

CE = OE

= VIL

OE = VIL

CE = VIL

AT27BV1024-90

Min

Max

Unit

90

ns

90

ns

30

ns

30

ns

0

ns

Notes:

1. Timing measurement references are 0.8V and 2.0V. Input AC drive levels are 0.45V and 2.4V, unless otherwise specified.

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. When reading a AT27BV1024, a 0.1 µF capacitor is required across VCC and ground to suppress spurious voltage

transients.

6 AT27BV1024

0631E–EPROM–12/07

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