Data polling characteristics(1), Data polling waveforms, At28bv64b – Rainbow Electronics AT28BV64B User Manual

Page 8: Software data protection write cycle wavefo rms

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AT28BV64B

8

Software Data Protection Write Cycle Waveforms

(1)(2)(3)

Notes:

1.

A0 - A12 must conform to the addressing sequence for the first three bytes as shown above.

2.

A6 through A12 must specify the same page address during each high to low transition of WE (or CE) after the software
code has been entered.

3.

OE must be high only when WE and CE are both low.

Notes:

1. These parameters are characterized and not 100% tested.

2. See AC Read Characteristics.

Data Polling Waveforms

Data Polling Characteristics

(1)

Symbol

Parameter

Min

Typ

Max

Units

t

DH

Data Hold Time

0

ns

t

OEH

OE Hold Time

0

ns

t

OE

OE to Output Delay

(2)

ns

t

WR

Write Recovery Time

0

ns

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