X28HC256DI-12 INTERSIL [Intersil Corporation], X28HC256DI-12 Datasheet - Page 13

• Manufacturer Part Number: X28HC256DI-12
• Description: 5 Volt, Byte Alterable EEPROM
• Manufacturer: INTERSIL [Intersil Corporation]

Write Cycle Limits
Notes: (6) Typical values are for T
WE Controlled Write Cycle
Symbol
t
t
t
WPH
WC
t
t
DW
Data Out
t
t
t
t
t
t
OES
OEH
t
t
t
Address
t
BLC
CW
WP
CH
DH
AS
AH
CS
DV
DS
Data In
(7) t
(8) t
(7)
(8)
(8)
WE
OE
CE
the device requires to automatically complete the internal write operation.
WC
WPH
is the minimum cycle time to be allowed from the system perspective unless polling techniques are used. It is the maximum time
Write cycle time
Address setup time
Address hold time
Write setup time
Write hold time
CE pulse width
OE HIGH setup time
OE HIGH hold time
WE pulse width
WE HIGH recovery (page write only)
Data valid
Data setup
Data hold
Delay to next write after polling is true
Byte load cycle
and t
DW
are periodically sampled and not 100% tested.
13
t
A
AS
= 25°C and nominal supply voltage.
t
OES
t
CS
Parameter
t
AH
t
WP
X28HC256
t
DS
Data Valid
t
OEH
HIGH Z
Min.
0.15
50
50
50
50
50
10
0
0
0
0
0
0
t
t
t
WC
DH
CH
Typ.
3
(6)
Max.
100
5
1
Unit
May 17, 2006
ms
ns
ns
ns
ns
ns
ns
ns
ns
ns
µs
ns
ns
µs
µs
FN8108.1