AT28C256E-20UM/883 Atmel, AT28C256E-20UM/883 Datasheet - Page 11
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AT28C256E-20UM/883
Manufacturer Part Number
AT28C256E-20UM/883
Description
IC EEPROM 256KBIT 200NS 28PGA
Manufacturer
Atmel
Datasheet
1.AT28C256-15PU.pdf
(25 pages)
Specifications of AT28C256E-20UM/883
Format - Memory
EEPROMs - Parallel
Memory Type
EEPROM
Memory Size
256K (32K x 8)
Speed
200ns
Interface
Parallel
Voltage - Supply
4.5 V ~ 5.5 V
Operating Temperature
-55°C ~ 125°C
Package / Case
28-PGA
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Other names
AT28C256E-20UM883
22. Data Polling Characteristics
Notes:
23. Data Polling Waveforms
24. Toggle Bit Characteristics
Notes:
25. Toggle Bit Waveforms
Notes:
0006M–PEEPR–12/09
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.
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.
6.
(1)
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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