X68257 Datasheet, PDF (5/14 Pages) Xicor Inc. – E2 Micro-Peripheral

X68257
Toggle Bit Polling
Because the typical write timing is less than the specified
5ms, Toggle Bit Polling has been provided to determine
the early end of write. During the internal programming
cycle I/O₆ will toggle from “1” to “0” and “0” to “1” on
Toggle Bit Polling E Control
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.
OPERATION
CE
LAST BYTE
WRITTEN
AS
A/D0–A/D7
A8–A14
AIN DIN
An
E
I/O6=X
I/O6=X
AIN DOUT
An
AIN DOUT
An
I/O6=X
I/O6=X
X68257 READY FOR
NEXT OPERATION
AIN DOUT
An
AIN DOUT
An
AIN
ADDR
R/W
6539 FHD F08.2
5