MC68908GZ8MFJE Datasheet, PDF (278/314 Pages) Freescale Semiconductor, Inc – Microcontrollers

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MC68HC908GZ16
V_DD
1 μF
1 μF
DB9
2
3
1 _C1+
+
3 _C1–
4 _C2+
+
5 _C2–
7
8
MAX232
V_CC ¹⁶
GND ¹⁵
V+ ²
V– ⁶
10
9
N.C.
47 pF
V_DD
+
1 μF
1 μF
+
27 pF
8 MHz
10 MΩ
1 kΩ
1 μF
+
74HC125
6
5
74HC125
2
3
4
V_DD
9.1 V
10 kΩ
RST
OSC2
OSC1
IRQ
PTA0
5
1
V_DD
V_DDA
0.1 μF
V_DD
10 k
PTB4
10 k
PTB0
10 k
PTB1
10 k
PTA1
V_SSA
V_SS
Figure 20-9. Normal Monitor Mode Circuit
47 pF
1 μF
1 μF
DB9
2
3
1 _C1+
+
3 _C1–
MAX232
V_CC ¹⁶
GND ¹⁵
V_DD
+
1 μF
1 μF
+
27 pF
8 MHz
4 _C2+
+
5 _C2–
7
8
V+ ²
V– ⁶
10
9
V_DD
1 μF
+
74HC125
6
5
74HC125
2
3
4
10 kΩ
5
1
MC68HC908GZ16
N.C.
RST
OSC2
10 MΩ
OSC1
V_DD
V_DDA
V_DD
0.1 μF
N.C.
IRQ
PTA0
PTB4
PTB0
PTB1
PTA1
N.C.
N.C.
N.C.
10 k
V_SSA
V_SS
Figure 20-10. Forced Monitor Mode
MC68HC908GZ16 • MC68HC908GZ8 Data Sheet, Rev. 4
278
Freescale Semiconductor