XC68HC705JJ7 Motorola, XC68HC705JJ7 Datasheet - Page 129

• Manufacturer Part Number: XC68HC705JJ7
• Description: MICROCONTROLLER
• Manufacturer: Motorola

MC68HC705JJ7 • MC68HC705JP7 — REV 4
MOTOROLA
Point
0
1
2
3
COMP2
Begin initial discharge and select
mode 1 by clearing CHG and ATD2
and setting ATD1 in the ACR.
V
Stop discharge and begin charge by
setting CHG control bit in ACR.
V
output trips, setting CPF2 and
CMP2, which clears CHG control bit
in the ACR. Reset CPF2 by writing a
1 to CPFR2.
V
CHG
OCF
TOF
CAP
Figure 8-9. A/D Conversion — Manual/Auto Discharge Control (Mode 1)
ICF
CAP
CAP
V
X
falls to V
rises to V
0
SS
Action
X
1
.
and comparator 2
(MIN)
t
t
DIS
DIS
2
Analog Subsystem
Software write
Wait out minimum t
Software write
Wait out t
CPF2 clears CHG control bit.
t
CHG
Software/Hardware Action
CHG
time.
3
DIS
1
time.
(MIN)
t
DIS
Software
V
Software
V
2
MAX
X
Dependent Variable(s)
, I
A/D Conversion Methods
V
CHG
V
, I
MAX
X
DIS
Advance Information
=
, C
Analog Subsystem
, C
t
CHG
EXT
C
EXT
EXT
x I
CHG
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