11

0542F–PEEPR–2/09

AT28C040

Notes:

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

2. See AC Read Characteristics.

22. Data Polling Waveforms

Notes:

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

2. See AC Read Characteristics.

24. Toggle Bit Waveforms

(1)(2)(3)

Notes:

1. Toggling either OE or CE or both OE and CE will operate toggle bit.

2. Beginning and ending state of I/O6 will vary.

3. Any address location may be used but the address should not vary.

21. Data Polling Characteristics(1)

Symbol

Parameter

Min

Typ

Max

Units

t

DH

Data Hold Time

10

ns

OE Hold Time

10

ns

t

OE

OE to Output Delay(2)

ns

Write Recovery Time

0

ns

23. Toggle Bit Characteristics(1)

Symbol

Parameter

Min

Typ

Max

Units

Data Hold Time

10

ns

t

OEH

OE Hold Time

10

ns

OE to Output Delay(2)

ns

OE High Pulse

150

ns

t

WR

Write Recovery Time

0

ns