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CHAPTER 1 OVERVIEW
User’s Manual U12697EJ3V0UM
Cautions 1. Connect the TEST pin directly to a V
SS0
or pull down. For the pull-down connection, use of
a resistor with a resistance between 470
Ω
and 10 k
Ω
is recommended.
2. Connect the V
PP
pin directly to V
SS0
or pull down during normal operation. When using a
system in which on-chip flash memory is overwritten on board, connect the V
PP
pin via a pull-
down resistor.
For the pull-down connection, use of a resistor with a resistance between 470
Ω
and 10 k
Ω
is recommended.
3. Connect the AV
DD
pin to V
DD0
.
4. Connect the AV
SS
pin to V
SS0
.
Remark
When the
µ
PD784225 and 784225Y Subseries are used in applications where the noise generated inside
the microcontroller needs to be reduced, the implementation of noise reduction measures, such as
supplying voltage to V
DD0
and V
DD1
individually and connecting V
SS0
and V
SS1
to different ground lines,
is recommended. Always use V
DD0
and V
DD1
, and V
SS0
and V
SS1
at the same potential.
