Datasheet


SLAS412− DECEMBER 2003
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53
Sample,Conversion &
Averaging for
AUX input
(PAGE01H,REG01H
[D15−D14 = 01])
Waiting for Host to
write into REG−00
of PAGE−01
REG−00 of
PAGE−01
is updated
for Continous
AUX SCAN
Mode
Wait for Reference Powerup Delay in case
of internal ref. mode if applicable
Reading
AUX−Data
Register
Sample,Conversion &
Averaging for
AUX input
Sample,Conversion &
Averaging for
AUX input
Reading
AUX−Data
Register
SS Deactivated
DAV
Port Scan Operation
The time needed to complete one set of port scan conversions is given by:
t + 3
NJN
AVG
ƪ
ǒ
N
BITS
) 1
Ǔ
8MHz
ƒ
conv
) n
1
) 12
ƫ
) 1Nj t
OSC
) 31 t
OSC
) n
2
t
OSC
where:
n
1
= 6 ; if ƒ
conv
= 8 MHz
7 ; if ƒ
conv
≠ 8 MHz
n
2
= 0 ; if external reference mode is selected
3 ; if t
REF
= 0 µs or reference is programmed for power up all the times.
1 + t
REF
/125 ns; if t
REF
≠
0 µs and reference needs to power down between conversions.
t
REF
is the reference power up delay time.