AT28C040-25FI Atmel, AT28C040-25FI Datasheet - Page 11
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AT28C040-25FI
Manufacturer Part Number
AT28C040-25FI
Description
IC EEPROM 4MBIT 250NS 32FP
Manufacturer
Atmel
Datasheet
1.AT28HC64B-70TC.pdf
(15 pages)
Specifications of AT28C040-25FI
Format - Memory
EEPROMs - Parallel
Memory Type
EEPROM
Memory Size
4M (512K x 8)
Speed
250ns
Interface
Parallel
Voltage - Supply
4.5 V ~ 5.5 V
Operating Temperature
-40°C ~ 85°C
Package / Case
32-Flatpack
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Other names
AT28C04025FI
21. Data Polling Characteristics
Notes:
22. Data Polling Waveforms
23. Toggle Bit Characteristics
Notes:
24. Toggle Bit Waveforms
Notes:
0542F–PEEPR–2/09
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. See AC Read Characteristics.
1. These parameters are characterized and not 100% tested.
2. See AC Read Characteristics.
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.
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
(2)
(2)
(1)(2)(3)
(1)
(1)
Min
Min
150
10
10
10
10
0
0
Typ
Typ
Max
Max
AT28C040
Units
Units
ns
ns
ns
ns
ns
ns
ns
ns
ns
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