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Chapter 20
Flash Memory (µPD70F3123)
Preliminary User’s Manual U14913EE1V0UM00
20.5 Flash Programming Circuitry
The following schematic shows the minimal circuitry, that is needed for the µPD70F3123. The circuitry
incorporates a low-dropout voltage regulator (µPC29S78) as well as flash writer support. If the device is
not used for Selfprogramming the V
PP0
/V
PP1
pins have to be connected via a pull down resistor to
ground and the voltage regulator (µPC29S78) can be removed.
Figure 20-3: Application Example for Flash Selfprogramming
V
SS30
V
SS31
V
SS32
V
DD30
V
DD31
V
DD32
CV
DD
CV
SS
V
SS52
V
SS53
V
SS54
V
DD52
V
DD53
V
DD54
V
SS50
V
SS51
V
DD50
V
DD51
X1
X2
VC
M
P
IN
VC
M
P
OU
T
µPD76F3123
3 x C
VDD3
C
L
KS
EL
IC
CLK
IN
+5 V
MO
DE
1
MO
DE
2
MO
DE
0
µPC29S78
V
IN
V
PP
1
V
PP
0
+5 V
PX
Y
2
4
1
3
+
GND
D1
D2
5 x C
VDD5
C
X
C
X
C
CVDD
SCK0
SI0
SO0
Pin7/SCK
Pin5/SO
Pin3/SI
RESET
Pin2/RESET
Reset
generator
Pin6/V
PP
Flash
Master
Cable 1
V
SS55
+ 5 V
MO
DE3
Содержание V850E/CA1 ATOMIC
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