AT27BV512-12JC View Datasheet(PDF) - Atmel Corporation

Part Name

Description

View to exact match

AT27BV512-12JC

512K (64K x 8) Unregulated Battery-Voltage™ High Speed OTP CMOS EPROM

Atmel Corporation 

AT27BV512

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

AT27BV512

-90

-12

-15

Symbol

tACC (3)

tCE (2)

tOE (2, 3)

tDF (4, 5)

tOH

Parameter

Condition

Address to Output Delay

CE = OE/VPP = VIL

CE to Output Delay

OE/VPP = VIL

OE/VPP to Output Delay

CE = VIL

OE/VPP or CE High to Output Float,

whichever occurred first

Output Hold from Address, CE or

OE/VPP, whichever occurred first

Min Max

90

90

50

40

0

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)

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/VPP may be delayed up to tCE - tOE after the

falling edge of CE 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.

6. When reading the 27BV512, a 0.1 µF capacitor is required

across VCC and grond to supress spurious voltage transients.

3-17

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