AT27BV1024-90JC 데이터 시트보기 (PDF) - Atmel Corporation

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AT27BV1024-90JC

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

Atmel Corporation 

AT27BV1024

AC Characteristics for Read Operation (VCC = 2.7V to 3.6V and 4.5V to 5.5V)

AT27BV1024

-90

-12

-15

Symbol

Parameter

Condition

tACC (3)

tCE (2)

tOE (2, 3)

tDF (4, 5)

tOH

Address to

Output Delay

CE = OE

= VIL

CE to Output Delay OE = VIL

OE to Output Delay CE = VIL

OE or CE High to Output Float,

whichever occurred first

Output Hold from Address, CE or OE,

whichever occurred first

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

Min Max Min Max Min Max

Units

90

120

150

ns

90

120

150

ns

30

35

50

ns

30

30

40

ns

0

0

0

ns

= Preliminary Information

AC Waveforms for Read Operation (1)

Notes: 1. Timing measurement references are 0.8V and 2.0V.

Input AC drive levels are 0.45V and 2.4V, unless oth-

erwise 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 27BV1024, a 0.1 µF capacitor is required

across VCC and ground to supress spurious voltage tran-

sients.

3-37

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