S6B33A2 Datasheet, PDF (27/67 Pages) Samsung semiconductor – 128 RGB Segment & 129 Common Driver For 4,096 Color STN LCD

S6B33A2 PRELIMINARY VER 1.3 128 RGB SEGMENT & 129 COMMON DRIVER FOR 4,096 COLOR STN LCD
On-Chip Regulator Configuration
REG_OUT
VDD1
VDD
C1
VDD
Floating
REG_OUT
VDD1
VDD
VDD
Value of external Capacitance
Item
Value
Unit
C1
1.0 to 4.7
µF
VDD: 2.4 ~ 3.3V
VDD: 1.7 ~ 3.3V
Figure 22. Regulator Application
Oscillator Circuit
When internal oscillator is used(EXT=0), the selection of oscillator resistor is determined by display mode.
- Normal display mode/ Partial display mode 0 : resistor1 between OSC1 and OSC2
- Partial display mode 1 : resistor2 between OSC3 and OSC4
-
When external clock is used (EXT=1), clock frequency should be adjusted to display mode which is selected.
Example of external oscillator application
Ext.
VSS
OSC5 OSC4 OSC3 OSC2 OSC1
When external clock mode (EXT = “H”)
is used, it is not possible to use the
partial mode1
Figure 23. External oscillator application
23