at28c256f-25um883 ATMEL Corporation, at28c256f-25um883 Datasheet - Page 11

• Manufacturer Part Number: at28c256f-25um883
• Description: At28c256 256k 32k X 8 Paged Parallel Eeprom
• Manufacturer: ATMEL Corporation

22. Data Polling Characteristics
Notes:
23. Data Polling Waveforms
24. Toggle Bit Characteristics
Notes:
25. Toggle Bit Waveforms
Notes:
0006K–PEEPR–01/08
Symbol
t
t
t
t
Symbol
t
t
t
t
t
DH
OEH
OE
WR
DH
OEH
OE
OEHP
WR
1. These parameters are characterized and not 100% tested.
2.
1. These parameters are characterized and not 100% tested.
2. See
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.
See“AC Read Characteristics” on page
Parameter
Data Hold Time
OE Hold Time
OE to Output Delay
Write Recovery Time
Parameter
Data Hold Time
OE Hold Time
OE to Output Delay
OE High Pulse
Write Recovery Time
“AC Read Characteristics” on page
(2)
(2)
(1)(2)(3)
(1)
6.
(1)
6.
Min
Min
150
10
10
0
0
0
0
Typ
Typ
Max
AT28C256
Max
Units
Units
ns
ns
ns
ns
ns
ns
ns
ns
ns
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