UPD16680P NEC [NEC], UPD16680P Datasheet - Page 10

• Manufacturer Part Number: UPD16680P
• Description: 1/53, 1/40 DUTY, LCD CONTROLLER/DRIVER WITH BUILT-IN RAM
• Manufacturer: NEC [NEC]

5. POWER CIRCUIT
internal booster circuit is selected by the capacitor connection.
for supplying the reference circuit selected by V
5.1 Booster circuit
connect condenser between V
booster circuit boost voltage between V
these pins.
Remarks 1. When to use 3-fold booster circuit, not to connect condenser between C
10
The PD16680 incorporate the booster circuit is switchable between 3 and 4 folds. The boosting magnitude of
The reference power circuit is switchable between internal driving circuit and external driving circuit. The method
Using Internal driving circuit, to connect condenser for boosting between C
The booster circuit is using clock made by internal oscillation circuit. It is necessary that oscillation to be operated.
C
1
+
, C
1
–
,C
2. When to use external power supply circuit, booster circuit is not operating.
2
+
open C
,C
2
–
,C
2
3
V
V
+
+
DD
SS
,C
and C
3
= 0 V
= 3 V
–
, V
3
DD
LCD
–
.
are pins for booster circuit. To use the wire that have low register value to connect
V
and V
LCD
(3-fold boost)
= 3V
Figure 5-1 3x and 4x Booster Circuits
DD
DD
to be stable boosting voltage. And to set V
and V
DD
= 9 V
Data Sheet S12694EJ2V0DS00
EXT
SS
to 3 or 4 folds.
pin (H : External, L : Internal ).
V
LCD
(4-fold boost)
= 4V
DD
= 12 V
1
+
and C
EXT
1
–
3
, C
+
pin to low level, internal
and C
2
+
and C
2
–
, C
2
–
1
, C
+
and C
3
+
and C
PD16680
1
–
, leave
3
–
, to