CHAPTER 14
µ
µµ
µ
PD78F9801
User’s Manual U12978EJ3V0UD 193
Figure 14-3. Example of Connection with Dedicated Flash Programmer
(a) 3-wire serial I/O
Dedicated flash programmer
VPP1
VDD
RESET
SCK
SO
SI
CLK
Note
GND
V
PP
V
DD0
, V
DD1
RESET
SCK10
SI10
SO10
X1
V
SS0
, V
SS1
PD78F9801
µ
(b) Pseudo-3-wire
Dedicated flash programmer
VPP1
VDD
RESET
SCK
SO
SI
GND
V
PP
V
DD0
, V
DD1
RESET
P10
P12
P11
CLK
Note
X1
V
SS0
, V
SS1
PD78F9801
µ
Note Connect this pin when the system clock is supplied from the dedicated flash programmer. If a resonator is
already connected to the X1 pin, the CLK pin does not need to be connected.
Caution The VDD pin, if already connected to the power supply, must be connected to the VDD pin of the
dedicated flash programmer. When using the power supply connected to the VDD pin, supply
voltage before starting programming.