X28C512 Xicor, X28C512 Datasheet - Page 14

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X28C512

Manufacturer Part Number
X28C512
Description
5 Volt/ Byte Alterable E2PROM
Manufacturer
Xicor
Datasheet

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X28C512/X28C513
CE Controlled Write Cycle
Page Write Cycle
Notes: (5) 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
*ADDRESS
DATA OUT
ADDRESS
DATA IN
(6) The timings shown above are unique to page write operations. Individual byte load operations within the page write must conform
OE
WE
OE
CE
WE
CE
to fetch data from another memory device within the system for the next write; or with WE HIGH and CE LOW effectively performing
a polling operation.
to either the CE or WE controlled write cycle timing.
I/O
(5)
(6)
*For each successive write within the page write operation, A 7 –A 15 should be the same or
writes to an unknown address could occur.
t WP
t OES
t AS
BYTE 0
t CS
t DV
t WPH
BYTE 1
t AH
t BLC
t CW
HIGH Z
BYTE 2
t DS
14
DATA VALID
t OEH
BYTE n
t WC
t CH
t DH
t WPH
BYTE n+1
LAST BYTE
BYTE n+2
t WC
3856 FHD F19.1
3856 FHD F18

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