Datasheet

Monitor ROM (MON)
MC68HC908AZ60A • MC68HC908AS60A • MC68HC908AS60E Data Sheet, Rev. 6
154 Freescale Semiconductor
Figure 14-1. Monitor Mode Circuit
+
+
+
10 MΩ
X1
V
DD
V
HI
MC145407
MC74HC125
68HC08
RST
IRQ
CGMXFC
OSC1
OSC2
V
SS
V
DD
PTA0
V
DD
10 kΩ
0.1 μF
0.022 μF
1 KΩ
6
5
2
4
3
1
DB-25
2
3
7
20
18
17
19
16
15
V
DD
V
DD
20 pF
20 pF
10 μF
10 μF10 μF
10 μF
1
2
4
7
14
3
0.1 μF
4.9152 MHz
10 kΩ
PTC3
V
DD
10 kΩ
B
A
NOTE: Position A — Bus clock = CGMXCLK ÷ 4 or CGMVCLK ÷ 4
Position B — Bus clock = CGMXCLK ÷ 2
(SEE
NOTE.)
56
+
PTC0
PTC1
V
DD
10 kΩ
V
SSA
*
* = Refer to Table 14-9 and Table 14-10 for correct value.
9.1V
0.1 μF
V
DDA
/V
DDAREF
V
DDA
V
DD