AT28HC256-90FM/883 Atmel, AT28HC256-90FM/883 Datasheet - Page 8
![IC EEPROM 256KBIT 90NS 28FPACK](/photos/7/27/72786/28f-flatpack_sml.jpg)
AT28HC256-90FM/883
Manufacturer Part Number
AT28HC256-90FM/883
Description
IC EEPROM 256KBIT 90NS 28FPACK
Manufacturer
Atmel
Datasheet
1.AT28HC256-12JU.pdf
(24 pages)
Specifications of AT28HC256-90FM/883
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
-55°C ~ 125°C
Package / Case
28-Flatpack
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Other names
AT28HC256-90FM883
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
AT28HC256
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
0007N–PEEPR–9/09
Units
ns
ns
ns
ns
ns
ns
ns