Datasheet

Monitor Module (MON)
MC68HC908GR16A Data Sheet, Rev. 1.0
Freescale Semiconductor 239
Figure 19-10. Normal Monitor Mode Circuit
Figure 19-11. Forced Monitor Mode
10 k
10 k
10 k
10 k
RST
IRQ
PTA0
OSC1
8
7
DB9
2
3
5
16
15
2
6
10
9
V
DD
1 µF
MAX232
V+
V–
V
DD
1 µF
+
1
2
3
4
5
6
74HC125
74HC125
10 kΩ
V
SS
0.1 µF
V
DD
C1+
C1–
5
4
1 µF
C2+
C2–
+
3
1
1 µF
+
+
+
1 µF
V
DD
N.C.
V
CC
GND
1 kΩ
OSC2
47 pF
27 pF
8 MHz
10 MΩ
V
DDA
PTB4
PTB0
PTB1
PTA1
V
SSA
V
DD
MC68HC908GR16A
9.1 V
10 k
RST
IRQ
PTA0
OSC1
8
7
DB9
2
3
5
16
15
2
6
10
9
V
DD
1 µF
MAX232
V+
V–
V
DD
1 µF
+
1
2
3
4
5
6
74HC125
74HC125
10 kΩ
V
SS
0.1 µF
V
DD
C1+
C1–
5
4
1 µF
C2+
C2–
+
3
1
1 µF
+
+
+
1 µF
V
DD
N.C.
V
CC
GND
OSC2
47 pF
27 pF
8 MHz
10 MΩ
V
DDA
PTB4
PTB0
PTB1
PTA1
V
SSA
MC68HC908GR16A
N.C.
N.C.
N.C.
N.C.