Symbol

Parameter

Min

Typ

Max

Units

Write Cycle Time

AT28HC256

5

10

ms

AT28HC256F

2

3.0

ms

Address Set-up Time

0

ns

Address Hold Time

50

ns

Data Set-up Time

50

ns

Data Hold Time

0

ns

Write Pulse Width

100

ns

Byte Load Cycle Time

150

µs

Write Pulse Width High

50

ns

Page Mode Write Characteristics

Chip Erase Waveforms

Page Mode Write Waveforms

(1, 2)

Notes: 1. A6 through A14 must specify the same page address during each high to low transition of WE (or CE).

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

AT28HC256

2-285