X28HC256D-90 INTERSIL [Intersil Corporation], X28HC256D-90 Datasheet - Page 14

• Manufacturer Part Number: X28HC256D-90
• Description: 5V, Byte Alterable EEPROM
• Manufacturer: INTERSIL [Intersil Corporation]

CE Controlled Write Cycle
Page Write Cycle
NOTES:
10. The timings shown above are unique to page write operations. Individual byte load operations within the page write must conform to either the
9. Between successive byte writes within a page write operation, OE can be strobed LOW: e.g. this can be done with CE and WE HIGH to fetch
DATA OUT
data from another memory device within the system for the next write; or with WE HIGH and CE LOW effectively performing a polling operation.
CE or WE controlled write cycle timing.
ADDRESS
ADDRESS
(NOTE 10)
(NOTE 9)
DATA IN
WE
OE
WE
CE
OE
CE
I/O
*For each successive write within the page write operation, A
writes to an unknown address could occur.
t
WP
t
OES
14
t
AS
BYTE 0
t
CS
t
WPH
BYTE 1
t
AH
t
BLC
t
CW
X28HC256
HIGH Z
BYTE 2
t
DS
DATA VALID
t
OEH
BYTE n
7
t
WC
to A
t
t
CH
DH
15
should be the same or
BYTE n + 1
LAST BYTE
BYTE n + 2
t
WC
May 7, 2007
FN8108.2