AT28C256-25PC Atmel, AT28C256-25PC Datasheet - Page 8
![](/photos/31/32/313280/pdip28_sml.jpg)
AT28C256-25PC
Manufacturer Part Number
AT28C256-25PC
Description
Manufacturer
Atmel
Datasheet
1.AT28C256-25PC.pdf
(27 pages)
Specifications of AT28C256-25PC
Density
256Kb
Interface Type
Parallel
Organization
32Kx8
Access Time (max)
250ns
Write Protection
Yes
Data Retention
10Year
Operating Supply Voltage (typ)
5V
Package Type
PDIP
Operating Temp Range
0C to 70C
Supply Current
50mA
Operating Supply Voltage (min)
4.5V
Operating Supply Voltage (max)
5.5V
Operating Temperature Classification
Commercial
Mounting
Through Hole
Pin Count
28
Lead Free Status / Rohs Status
Not Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
AT28C256-25PC
Manufacturer:
AT
Quantity:
31
14. AC Write Characteristics
Note:
15. AC Write Waveforms
15.1
15.2
8
Symbol
t
t
t
t
t
t
t
t
AS
AH
CS
CH
WP
DS
DH
DV
, t
, t
OES
OEH
1. NR = No Restriction
WE Controlled
CE Controlled
AT28C256
Parameter
Address, OE Setup Time
Address Hold Time
Chip Select Setup Time
Chip Select Hold Time
Write Pulse Width (WE or CE)
Data Setup Time
Data, OE Hold Time
Time to Data Valid
NR
Min
100
50
50
0
0
0
0
(1)
Max
0006K–PEEPR–01/08
Units
ns
ns
ns
ns
ns
ns
ns