MC68HC908GP32 Datasheet, PDF (199/410 Pages) Motorola, Inc – M68HC08 Family of 8-bit microcontroller units (MCUs)

Freescale Semiconductor, Inc.
Monitor ROM (MON)
Functional Description
0.1 µF
68HC908GP32
RST
1
+
10 µF
3
4
10 µF
+2
MC145407
V_TST
(SEE NOTE 3)
10 kΩ
C
D
(SEE NOTES 2
AND 3)
SW2
V_DD
10 k
0.033 µF
RESET VECTORS
$FFFE
$FFFF
IRQ
V_DDA
CGMXFC
20
6–30 pF
C
SW3
(SEE NOTE 2)
+
10 µF
18
32.768 kHz XTAL
D
SW4
C
(SEE NOTE 2)
17
+
10 µF
V_DD
330 kΩ D
6–30 pF
19
OSC1
OSC2
PTA7
V_SS
V_SSAD
V_SSA
DB-25
2
5
3
6
7
16
V_DD
15
V_DD
V_DDAD
0.1 µF
V_DD
1
14
MC74HC125
2
3
6
5
V_DD
10 kΩ
PTA0
4
V_DD
PTC3
7
V_DD
A
SW1
(SEE NOTE 1)
B
PTC0
PTC1
Notes:
1. For monitor mode entry when IRQ = V_TST:
SW1: Position A — Bus clock = CGMXCLK ÷ 4 or CGMVCLK ÷ 4
SW1: Position B — Bus clock = CGMXCLK ÷ 2
2. 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.
3. See Table 15-1 for IRQ voltage level requirements.
Figure 15-1. Monitor Mode Circuit
MC68HC908GP32•MC68HC08GP32 — Rev. 6
MOTOROLA
Monitor ROM (MON)
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Technical Data
197