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X88064PI Datasheet(PDF) 6 Page - Xicor Inc.

Part # X88064PI
Description  E2 Micro-Peripheral
PDF  15 Pages
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Manufacturer  XICOR [Xicor Inc.]
Direct Link  http://www.xicor.com
Logo XICOR - Xicor Inc.

X88064PI Datasheet(HTML) 6 Page - Xicor Inc.

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X88064
6
TOGGLE BIT POLLING
Because the X88064 typical nonvolatile write cycle time
is less than the specified 5ms, Toggle Bit Polling has
been provided to determine the early completion of write.
During the internal programming cycle I/O6 will toggle
from HIGH to LOW and LOW to HIGH on subsequent
attempts to read the device. When the internal cycle is
complete, the toggling will cease and the device will be
accessible for additional read or write operations.
Toggle Bit Polling RD/WR Control
Symbol Table
RD
LAST BYTE •
WRITTEN
CE
ALE
A/D0 –A/D7
A8–A12
WR
AIN
D IN
OPERATION
AIN
DOUT
AIN
DOUT
AIN
DOUT
AIN
D OUT
AIN
ADDR
I/O6=X
X88064 READ Y FOR
NEXT OPERATION
7023 FRM F05
I/O6=X
I/O6=X
I/O6=X
A12=n
A12=n
A12=n
A12=n
A12=n
WAVEFORM
INPUTS
OUTPUTS
Must be
steady
Will be
steady
May change
from LOW
to HIGH
Will change
from LOW
to HIGH
May change
from HIGH
to LOW
Will change
from HIGH
to LOW
Don’t Care:
Changes
Allowed
Changing:
State Not
Known
N/A
Center Line
is High
Impedance



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