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X28C64DM Scheda tecnica(PDF) 4 Page - Xicor Inc.

Il numero della parte X28C64DM
Spiegazioni elettronici  5 Volt, Byte Alterable E2PROM
PDF  25 Pages
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Produttore elettronici  XICOR [Xicor Inc.]
Homepage  http://www.xicor.com
Logo XICOR - Xicor Inc.

X28C64DM Scheda tecnica(HTML) 4 Page - Xicor Inc.

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X28C64
DATA Polling I/O7
Figure 2.
DATA Polling Bus Sequence
CE
OE
WE
I/O7
X28C64
READY
LAST
WRITE
HIGH Z
VOL
VIH
A0–A12
An
An
An
An
An
An
VOH
An
3853 FHD F12
Figure 3.
DATA Polling Software Flow
DATA Polling can effectively halve the time for writing to
the X28C64. The timing diagram in Figure 2 illustrates
the sequence of events on the bus. The software flow
diagram in Figure 3 illustrates one method of implement-
ing the routine.
3853 FHD F13
WRITE DATA
SAVE LAST DATA
AND ADDRESS
READ LAST
ADDRESS
IO7
COMPARE?
X28C64
READY
NO
YES
WRITES
COMPLETE?
NO
YES



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