AT28C040(2008) View Datasheet(PDF) - Atmel Corporation

Part Name

Description

MFG CO.

AT28C040
(Rev.:2008)

4-Megabit (512K x 8) Paged Parallel EEPROMs

Atmel Corporation 

21. Data Polling Characteristics(1)

Symbol Parameter

tDH

tOEH

tOE

tWR

Notes:

Data Hold Time

OE Hold Time

OE to Output Delay(2)

Write Recovery Time

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

2. See AC Read Characteristics.

22. Data Polling Waveforms

AT28C040

Min

Typ

Max

Units

10

ns

10

ns

ns

0

ns

23. Toggle Bit Characteristics(1)

Symbol Parameter

tDH

tOEH

tOE

tOEHP

tWR

Notes:

Data Hold Time

OE Hold Time

OE to Output Delay(2)

OE High Pulse

Write Recovery Time

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

2. See AC Read Characteristics.

24. Toggle Bit Waveforms(1)(2)(3)

Min

Typ

Max

Units

10

ns

10

ns

ns

150

ns

0

ns

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.

11

0542E–PEEPR–1/08

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