AT29C257-20JI Atmel, AT29C257-20JI Datasheet - Page 9
![IC FLASH 256KBIT 200NS 32PLCC](/photos/7/21/72190/453-32-plcc_sml.jpg)
AT29C257-20JI
Manufacturer Part Number
AT29C257-20JI
Description
IC FLASH 256KBIT 200NS 32PLCC
Manufacturer
Atmel
Datasheet
1.AT29C257-12JI.pdf
(12 pages)
Specifications of AT29C257-20JI
Format - Memory
FLASH
Memory Type
FLASH
Memory Size
256K (32K x 8)
Speed
200ns
Interface
Parallel
Voltage - Supply
4.5 V ~ 5.5 V
Operating Temperature
-40°C ~ 85°C
Package / Case
32-PLCC
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Other names
AT29C25720JI
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
AT29C257-20JI
Manufacturer:
ATM
Quantity:
2 400
Company:
Part Number:
AT29C257-20JI
Manufacturer:
ATM
Quantity:
2 400
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
4-113