Hitachi H8/3048 Hardware Manual page 639

2. 12 V is applied to the V
When these pins are pulled up to the V
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prevent reverse current from flowing to the V
Note: In normal operation, if the mode MD2 pin to which 12 V is applied is to be set to 0, it
should be pulled down with a resistor.
A sample circuit is shown figure 18-32.
Adapter board
Figure 18-32 Example of Mounting Board Design
(Connection to Adapter Board—When V
and mode MD2 pins when programming or erasing flash memory.
PP
line in normal operation, diodes should be inserted to
CC
CC
V pin
PP
12 V
0.01 µF 1.0 µF
12 V
Mode pin
0.01 µF 1.0 µF
630
line when 12 V is applied.
V
CC
V
PP
V
CC
H8/3048F
MD2
mode
pin
User system
Pin and Mode Pin Settings Are 1)
PP