MC908GR8CDWE Datasheet, PDF (191/408 Pages) Freescale Semiconductor, Inc – M68HC08 Microcontrollers

Freescale Semiconductor, Inc.
Monitor ROM (MON)
Functional Description
0.1 µF
68HC08
RST
1
+
10 µF
3
4
10 µF
+2
DB-25
2
5
3
6
7
MC145407
V_TST
(SEE NOTE 3)
10 kΩ
C
D
(SEE NOTES 2
SW2 ^{AND 3)}
V_DDA
10 k
RESET VECTORS
$FFFE
$FFFF
IRQ
V_DDA
CGMXFC
0.033 µF
20
6–30 pF
C
SW3
(SEE NOTE 2)
+
D
10 µF
18
SW4
C _{(SEE NOTE 2)}
32.768 kHz XTAL
17
330 kΩ D
10 kΩ
+
10 µF
V_DD
6–30 pF
19
OSC1
OSC2
PTA1
V_SS
V_SSAD/V_REFL
V_SSA
16
V_DD
15
V_DD
V_DDAD/V_REFH
0.1 µF
V_DD
1
14
MC74HC125
2
3
6
5
V_DD
10 kΩ
PTA0
4
V_DD
7
10 kΩ
PTB0
PTB1
10 kΩ
Notes:
1. SW2, SW3, and SW4: Position C — Enter monitor mode using external oscillator.
SW2, SW3, and SW4: Position D — Enter monitor mode using external XTAL and internal PLL.
2. See . Monitor Mode Signal Requirements and Options for IRQ voltage level requirements.
Figure 15-1. Monitor Mode Circuit
MC68HC908GR8 — Rev 4.0
MOTOROLA
Monitor ROM (MON)
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Technical Data
191