MC908QT1 FREESCALE [Freescale Semiconductor, Inc], MC908QT1 Datasheet - Page 140
MC908QT1
Manufacturer Part Number
MC908QT1
Description
Microcontrollers
Manufacturer
FREESCALE [Freescale Semiconductor, Inc]
Datasheet
1.MC908QT1.pdf
(184 pages)
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2
3
5
2
3
5
1 µF
1 µF
1 µF
1 µF
DB9
DB9
+
+
+
+
7
8
1
3
4
5
1
3
4
5
7
8
C1+
C1–
C2+
C2–
C1+
C1–
C2+
C2–
Figure 15-10. Monitor Mode Circuit (External Clock, with High Voltage)
Figure 15-11. Monitor Mode Circuit (External Clock, No High Voltage)
MAX232
MAX232
V+
V–
V+
V–
16
15
2
10
6
16
15
2
10
6
1 µF
1 µF
9
9
V
DD
V
MC68HC908QY/QT Family Data Sheet, Rev. 5
+
DD
+
+
+
1 µF
2
2
1 µF
74HC125
74HC125
1
1
+
3
3
1 µF
+
1 µF
74HC125
74HC125
6
6
4
4
10 kΩ
10 kΩ
5
5
V
V
DD
V
DD
9.8304 MHz CLOCK
TST
10 kΩ
9.8304 MHz CLOCK
9.1 V
1 kΩ
10 kΩ
*
V
DD
* Value not critical
*
N.C.
RST (PTA3)
OSC1 (PTA5)
IRQ (PTA2)
PTA0
RST (PTA3)
OSC1 (PTA5)
IRQ (PTA2)
PTA0
Freescale Semiconductor
PTA1
PTA4
V
V
DD
SS
PTA1
PTA4
* Value not critical
V
V
DD
SS
10 kΩ
10 kΩ
V
DD
V
0.1 µF
*
N.C.
*
N.C.
DD
0.1 µF
V
DD
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