August 27, 1998
GENERAL RELEASE SPECIFICATION
t
DIS
t
t
t
DIS
DIS
MAX
(MIN)
(MIN)
V
CAP
V
MAX
t
CHG
t
X I
CHG
CHG
V
V
=
X
X
C
X
CHG
COMP
TOF
OCF
ICF
0
1
2
3
4
5
1
Point
Action
Software/Hardware Action
Dependent Variable(s)
Begin initial Discharge and select
0
Mode 0 by clearing the CHG, ATD2 Software write.
and ATD1 control bits in the ACR.
Software.
1
2
V
falls to V
.
Wait out minimum t
time.
V
, I , C
CAP
SS
DIS
MAX DIS X.
Stop Discharge and begin Charge
by setting CHG control bit in ACR.
Software write.
Software.
V , I , C
X.
V
rises to V and comparator
X
CAP
3
4
5
Wait out t
Wait out t
time.
time.
CHG
X
CHG
output trips, setting CPF.
V
Reaches V
V
, I
, C
CAP
MAX.
CHG
MAX CHG X.
Begin next Discharge by clearing
the CHG control bit in the ACR.
Software write.
Software.
Figure 15-8. A/D Conversion - Full Manual Control (Mode 0)
MC68HC05SB7
REV 2.1
ANALOG SUBSYSTEM
MOTOROLA
15-23
FREESCALE [ Freescale ]
