MC68HC908JW32_09 Datasheet, PDF (94/232 Pages) Freescale Semiconductor, Inc – M68HC08 Microcontrollers

Monitor Mode (MON)
0.1 µF
V_DD
0.1 µF
0.1 µF
RST
HC908JW32
V_DD
V_DDPLL
V_SSPLL
V_SS
2k
2.2 nF
CGMXFC
100 pF
V_{REG 4.9152MHz/9.8304MHz}
(50% DUTY)
MAX232
V_DD
1 _C1+
+
1 µF
3 _C1–
4 _C2+
+
1 µF
5 _C2–
DB9
2
7
3
8
V_CC ¹⁶
+
1 µF
GND ¹⁵
1 µF
+
XTAL CIRCUIT
V+ ²
V– ⁶
V_TST
V_{DD 1 k}
8.5 V
1 µF
+
10 k
74HC125
10
6
5
74HC125
9
2
3
4
V_DD
5
1
10 k
NOTES:
1. Affects high voltage entry to monitor mode only (SW2 at position C):
SW1: Position A — Bus clock = OSC1 4
SW1: Position B — Bus clock = OSC1 2
A SW1
(SEE NOTE)
B
10 k
V_DD
10 k
10 k
OSC1
IRQ
PTA0
PTA1
PTC1
PTA2
Figure 7-1. Monitor Mode Circuit
MC68HC908JW32 Data Sheet, Rev. 6
94
Freescale Semiconductor