mc68hc908gr8a Freescale Semiconductor, Inc, mc68hc908gr8a Datasheet - Page 223

• Manufacturer Part Number: mc68hc908gr8a
• Description: M68hc08 Microcontrollers Microcontroller
• Manufacturer: Freescale Semiconductor, Inc

Freescale Semiconductor
2
3
5
2
3
5
1 μF
1 μF
1 μF
1 μF
DB9
DB9
+
+
+
+
7
8
7
8
1
3
4
5
1
3
4
5
C1+
C1–
C2+
C2–
C1+
C1–
C2+
C2–
MAX232
MAX232
GND
GND
V
V
V+
V–
V+
V–
CC
CC
MC68HC908GR8A • MC68HC908GR4A Data Sheet, Rev. 5
16
15
2
10
16
15
2
10
6
6
9
9
Figure 18-10. Normal Monitor Mode Circuit
V
V
DD
DD
+
+
+
+
Figure 18-11. Forced Monitor Mode
1 μF
1 μF
1 μF
1 μF
2
2
74HC125
74HC125
1
1
+
+
3
3
1 μF
1 μF
74HC125
74HC125
6
6
4
4
5
5
33 pF
33 pF
33 pF
33 pF
V
V
DD
DD
10 kΩ
10 kΩ
9.8304 MHz
9.8304 MHz
1 kΩ
8.5 V
N.C.
N.C.
N.C.
10 MΩ
10 MΩ
RST
OSC2
OSC1
IRQ
PTA0
RST
OSC2
OSC1
IRQ
PTA0
MC68HC908GR8A
MC68HC908GR8A
Monitor Module (MON)
PTB0
PTB1
PTA1
PTB0
PTB1
PTA1
V
V
V
V
V
V
V
V
DDA
DDA
SSA
SSA
DD
DD
SS
SS
10 k
10 k
10 k
10 k
V
V
DD
DD
N.C.
N.C.
0.1 μF
0.1 μF
V
DD
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