MC68HC908JG16FA MOTOROLA [Motorola, Inc], MC68HC908JG16FA Datasheet - Page 123

• Manufacturer Part Number: MC68HC908JG16FA
• Description: Microcontrollers
• Manufacturer: MOTOROLA [Motorola, Inc]

MC68HC908JG16
MOTOROLA
NOTES:
1. Affects high voltage entry to monitor mode only (SW2 at position C):
2. SW2: Position C — High-voltage entry to monitor mode.
3. SW3: Position E — OSC1 directly driven by external oscillator.
SW2: Position D — Low-voltage entry to monitor mode (with blank reset vector).
See
SW3: Position F — OSC1 driven by crystal oscillator circuit.
DB-25
10 F
10 F
SW1: Position A — Bus clock = f
SW1: Position B — Bus clock = f
2
3
7
Section 20.
+
+
1
3
4
2
5
6
—
for IRQ voltage level requirements.
Rev. 1.0
MC145407
Freescale Semiconductor, Inc.
XCLK
XCLK
For More Information On This Product,
Figure 9-1. Monitor Mode Circuit
20
18
17
19
16
15
(SEE NOTE 2)
÷ 2
+
+
10 F
10 F
Go to: www.freescale.com
10k
Monitor ROM (MON)
V
V
DD
DD
12MHz
V
DD
20 pF
10k
1
2
6
4
7
C
D
V
12MHz
MC74HC125
TST
(SEE NOTE 3)
4.7 F
SW2
20 pF
(SEE NOTE 1)
+
14
3
5
0.1 F
E
F
E
F
V
DD
10 k
SW3
A
B
0.1 F
V
DD
10 k
SW1
0.1 F
10 k
10 k
10 k
f
V
XCLK
DD
V
V
Functional Description
DD
DD
V
Monitor ROM (MON)
DD
Technical Data
HC908JG16
RST
IRQ
V
V
V
OSC1
OSC2
PTA3
PTA0
PTA1
PTE3
PTA2
REG
DD
SS
123