MC68HC908GR16 Datasheet, PDF (271/310 Pages) Motorola, Inc – Microcontrollers

Freescale Semiconductor, Inc.
Development Support
Monitor ROM (MON)
MC68HC908GR16
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
47 pF
V_DD
+
C5
27 pF
C3
+
V_TST
9.8304 MHz
1 kΩ
V_DD
C4
+
74HC125
6
5
74HC125
2
3
4
10 kΩ
N.C.
10 MΩ
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 19-10. Normal Monitor Mode Circuit
MC68HC908GR16
V_DD
1 µF
1 µF
DB9
2
3
1 _C1+
+
3 _C1–
MAX232
V_CC ¹⁶
GND ¹⁵
V_DD
+
C5
C3
+
47 pF
N.C.
RST
OSC2
27 pF
9.8304 MHz
10 MΩ
OSC1
4 _C2+
+
5 _C2–
7
8
V+ ²
V– ⁶
10
9
V_DD
C4
+
74HC125
6
5
74HC125
2
3
4
10 kΩ
N.C.
IRQ
PTA0
5
1
V_DD
V_DDA
0.1 µF
PTB4
PTB0
PTB1
PTA1
N.C.
N.C.
N.C.
10 k
V_SSA
V_SS
Figure 19-11. Forced Monitor Mode Circuit (IRQ = V_DD)
MC68HC908GR16 — Rev. 1.0
MOTOROLA
Development Support
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Data Sheet
271