mc68hc908mr32 Freescale Semiconductor, Inc, mc68hc908mr32 Datasheet - Page 257

• Manufacturer Part Number: mc68hc908mr32
• Description: M68hc08 Microcontrollers
• Manufacturer: Freescale Semiconductor, Inc

Freescale Semiconductor
DB-25
S2 Position A — Bus clock = CGMXCLK ÷ 4 or CGMVCLK ÷ 4
S2 Position B — Bus clock = CGMXCLK ÷ 2
S3 Position A — Parallel communication
S3 Position B — Serial communication
10 µF
10 µF
2
3
7
+
+
1
3
4
2
5
6
MC145407
MC68HC908MR32 • MC68HC908MR16 Data Sheet, Rev. 6.1
20
18
17
19
16
15
+
+
Figure 18-8. Monitor Mode Circuit
10 µF
10 µF
V
1
2
6
4
7
DD
MC74HC125
14
3
5
20 pF
V
DD
A
B
V
DD
V
0.1 µF
20 pF
DDA
10 kΩ
4.9152 MHz
V
S3
10 kΩ
REFH
0.1 µF
V
DD
A
X1
V
B
0.1 µF
DDAD
S1
S2
0.02 µF
0.1 µF
0.1 µF
10 MΩ
V
10 kΩ
10 kΩ
10 kΩ
10 kΩ
DD
V
V
V
V
DD
DD
DD
HI
Monitor ROM (MON)
V
PWMGND
V
OSC1
OSC2
V
CGMXFC
V
RST
IRQ
V
V
V
PTA0
PTA7
PTC2
MC68HC908MR16/
PTC3
PTC4
V
MC68HC908MR32
REFH
DDA
REFL
SSAD
SSA
SS
DD
DDAD
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