UPD78F1502AGK-GAK-AX Datasheet, PDF (699/1031 Pages) Renesas Technology Corp – 16-Bit Single-Chip Microcontrollers

78K0R/Lx3
CHAPTER 16 LCD CONTROLLER/DRIVER
Figure 16-13 shows the common signal waveforms, and Figure 16-14 shows the voltages and phases of the common
and segment signals.
Figure 16-13. Common Signal Waveforms (1/2)
COMn
(Static display)
TF = T
(a) Static display mode
VLC0
VLCD
VSS
T: One LCD clock period
TF: Frame frequency
COMn
(Two-time slot mode)
(b) 1/2 bias method
TF = 2 × T
COMn
(Three-time slot mode)
TF = 3 × T
VLC0
VLC2 VLCD
VSS
VLC0
VLC2 VLCD
VSS
T: One LCD clock period
TF: Frame frequency
R01UH0004EJ0501 Rev.5.01
683
Jun 20, 2011