English
Language : 

NJU6645 Datasheet, PDF (68/112 Pages) New Japan Radio – 16-CHARACTER 6-LINE LCD DRIVER with JAPANESE KANJI ROM
◁
NJU6645 Preliminary
(17-2)Voltage booster
The internal voltage booster generates up to 6xVEE voltage. The boost level is selected from 2x, 3x, 4x, 5x or
6x by setting the D2 to D0 (VU2 to VU0) bits of the “Boost Level” instruction. VDCOUT terminal and
VOUT terminal are connected on the outside and used.
The boost voltage VDCOUT must not exceed 17.0V, otherwise the voltage stress may cause a permanent
damage to the LSI.
Boost Voltage VDCOUT = VEE x N [V]
( N : Boost Level =2~6 )
VDCOUT=16.8V
VDCOUT=9.9V
VEE=3.3V
VSS=0V
3-time Boost
- External Capacitor Connection of Voltage Booster
6-time Boost
C1+
+
C1-
C2+
+
C2-
C3+
+
C3-
C4+
+
C4-
C5+
+
C5-
VOUT
VDCOUT
VSS
+
VEE=2.8V
VSS=0V
6-time Boost
5-time Boost
C1+
+
C1-
C2+
+
C2-
C3+
+
C3-
C4+
+
C4-
C5+
C5-
VOUT
VDCOUT
+
VSS
4-time Boost
C1+
+
C1-
C2+
+
C2-
C3+
+
C3-
C4+
C4-
C5+
C5-
VOUT
VDCOUT
+
VSS
3-time Boost
C1+
+
C1-
C2+
+
C2-
C3+
C3-
C4+
C4-
C5+
C5-
VOUT
VDCOUT
+
VSS
2-time Boost
C1+
+
C1-
C2+
C2-
C3+
C3-
C4+
C4-
C5+
C5-
VOUT
VDCOUT
+
VSS
- 68 -
Ver.2009-05-20
 ▷