AT28HC256-90SC Atmel, AT28HC256-90SC Datasheet - Page 11
![IC EEPROM 256KBIT 90NS 28SOIC](/photos/6/82/68295/453-28-soic_sml.jpg)
AT28HC256-90SC
Manufacturer Part Number
AT28HC256-90SC
Description
IC EEPROM 256KBIT 90NS 28SOIC
Manufacturer
Atmel
Datasheet
1.AT28HC256-12JU.pdf
(24 pages)
Specifications of AT28HC256-90SC
Format - Memory
EEPROMs - Parallel
Memory Type
EEPROM
Memory Size
256K (32K x 8)
Speed
90ns
Interface
Parallel
Voltage - Supply
4.5 V ~ 5.5 V
Operating Temperature
0°C ~ 70°C
Package / Case
28-SOIC (7.5mm Width)
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
22. Data Polling Characteristics
Notes:
23. Data Polling Waveforms
24. Toggle Bit Characteristics
Notes:
25. Toggle Bit Waveforms
Notes:
0007N–PEEPR–9/09
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
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.
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
“AC Read Characteristics” on page
(2)
(2)
(1)
(1)
6.
6.
Min
Min
150
10
10
0
0
0
0
Typ
Typ
AT28HC256
Max
Max
Units
Units
ns
ns
ns
ns
ns
ns
ns
ns
ns
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