mc68hc908lb8 Freescale Semiconductor, Inc, mc68hc908lb8 Datasheet - Page 212

• Manufacturer Part Number: mc68hc908lb8
• Description: M68hc08 Microcontrollers Microcontroller
• Manufacturer: Freescale Semiconductor, Inc

Development Support
212
2
3
5
1 µF
1 µF
DB9
2
3
5
1 µF
1 µF
DB9
+
+
7
8
Figure 19-11. Forced Monitor Mode Circuit (External Clock, No High Voltage)
1
3
4
5
+
+
Figure 19-12. Forced Monitor Mode Circuit (Internal Clock, No High Voltage)
C1+
C1–
C2+
C2–
1
3
4
5
7
8
C1+
C1–
C2+
C2–
MAX232
MAX232
V+
V–
V+
V–
16
15
2
10
6
1 µF
9
16
15
2
10
6
1 µF
9
V
DD
+
+
V
1 µF
DD
2
+
+
MC68HC908LB8 Data Sheet, Rev. 1
74HC125
1 µF
2
1
74HC125
+
1
3
1 µF
+
3
74HC125
1 µF
6
74HC125
6
4
10 kΩ
5
4
10 kΩ
5
V
DD
V
DD
10 kΩ
9.8304 MHz CLOCK
10 kΩ
*
N.C.
N.C.
* Value not critical
*
V
N.C.
* Value not critical
DD
RST (PTA5)
OSC1 (PTC0)
IRQ (PTC2)
PTA0
RST (PTA5)
OSC1 (PTC0)
IRQ (PTC2)
PTA0
Freescale Semiconductor
PTA1
PTA4
V
V
DD
SS
PTA1
PTA4
V
V
DD
SS
V
N.C.
N.C.
DD
V
0.1 µF
N.C.
N.C.
DD
0.1 µF