AT29C257-90JC Atmel, AT29C257-90JC Datasheet - Page 9
![IC FLASH 256KBIT 90NS 32PLCC](/photos/7/21/72190/453-32-plcc_sml.jpg)
AT29C257-90JC
Manufacturer Part Number
AT29C257-90JC
Description
IC FLASH 256KBIT 90NS 32PLCC
Manufacturer
Atmel
Datasheet
1.AT29C257-12JI.pdf
(12 pages)
Specifications of AT29C257-90JC
Format - Memory
FLASH
Memory Type
FLASH
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
32-PLCC
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Other names
AT29C25790JC
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
AT29C257-90JC
Manufacturer:
ATM
Quantity:
2 640
Company:
Part Number:
AT29C257-90JC
Manufacturer:
ATM
Quantity:
2 640
Company:
Part Number:
AT29C257-90JC
Manufacturer:
ATMEL
Quantity:
16 988
Notes: 1. Toggling either OE or CE or both OE and CE will
Data Polling Characteristics
Notes: 1. These parameters are characterized and not 100% tested.
Data Polling Waveforms
Toggle Bit Characteristics
Notes: 1. These parameters are characterized and not 100% tested.
Toggle Bit Waveforms
Symbol
t
t
t
t
Symbol
t
t
t
t
t
DH
OEH
OE
WR
DH
OEH
OE
OEHP
WR
2. Beginning and ending state of I/O6 will vary.
2. See t
2. See t
operate toggle bit.
OE
OE
spec in AC Read Characteristics.
spec in AC Read Characteristics.
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
(1, 2, 3)
(2)
(2)
(1)
(1)
Min
150
10
0
0
Min
10
0
0
3. Any address location may be used but the address
should not vary.
Typ
Typ
AT29C257
Max
Max
Units
Units
ns
ns
ns
ns
ns
ns
ns
ns
ns
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