XC68HC705JJ7 Motorola, XC68HC705JJ7 Datasheet - Page 114

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

Analog Subsystem
Advance Information
114
VREF
1. Don/t care
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
0
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
Analog Multiplex Register
MUX4
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
MUX3
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
Table 8-2. Channel Select Bus Combinations
with respect to the external V
channel select bus connects it to this internal AV
When making A/D conversions, this AV
external ramping capacitor since the discharge device on the PB0/AN0
pin discharges the external capacitor to the internal AV
these circumstances, the positive input (+) to comparator 2 will always
be higher than the negative input (–) until the negative input reaches the
AV
Therefore, input voltages cannot be resolved if they are less than the
sum of the AV
always yield a low output from the comparator.
MUX2
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
SS
offset voltage plus any offset in comparator 2.
MUX1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
SS
Analog Subsystem
V
Hi-Z
Hi-Z
Hi-Z
Hi-Z
Hi-Z
Hi-Z
Hi-Z
Hi-Z
Hi-Z
Hi-Z
Hi-Z
Hi-Z
Hi-Z
Hi-Z
Hi-Z
Hi Z
offset and the comparator offset, because they will
DD
PB4/AN4/
TCMP
Hi-Z
Hi-Z
Hi-Z
Hi-Z
Hi-Z
Hi-Z
Hi-Z
Hi-Z
On
On
On
On
On
On
On
On
Channel Select Bus Connected to:
SS
pin. Turning on the V
MC68HC705JJ7 • MC68HC705JP7 — REV 4
PB3/AN3/
TCAP
Hi-Z
Hi-Z
Hi-Z
Hi-Z
Hi-Z
Hi-Z
Hi-Z
Hi-Z
On
On
On
On
On
On
On
On
SS
offset gets placed on the
PB2/AN2
Hi-Z
Hi-Z
Hi-Z
Hi-Z
Hi-Z
Hi-Z
Hi-Z
Hi-Z
On
On
On
On
On
On
On
On
SS
reference line.
SS
SS
PB1/AN1
MUX to the
line. Under
Hi-Z
Hi-Z
Hi-Z
Hi-Z
Hi-Z
Hi-Z
Hi-Z
Hi-Z
On
On
On
On
On
On
On
On
MOTOROLA
Hi-Z
Hi-Z
Hi-Z
Hi-Z
Hi-Z
Hi-Z
Hi-Z
Hi-Z
Hi-Z
Hi-Z
Hi-Z
Hi-Z
Hi-Z
Hi-Z
Hi Z
V
On
SS