Datasheet

RL78/L12 CHAPTER 14 LCD CONTROLLER/DRIVER
R01UH0330EJ0200 Rev.2.00 604
Dec 13, 2013
Table 14-2 lists the maximum number of pixels that can be displayed in each display mode.
Table 14-2. Maximum Number of Pixels (1/5)
(a) 32-pin products
Drive Waveform for
LCD Driver
LCD Driver Voltage
Generator
Bias Mode Number of
Time Slices
Maximum Number of Pixels
Waveform A External resistance
division
−
Static 13 (13 segment signals, 1 common signal)
1/2 2 26 (13 segment signals, 2 common signals)
3 39 (13 segment signals, 3 common signals)
1/3 3
4 52 (13 segment signals, 4 common signals)
Internal voltage
boosting, capacitor
split
1/3 3 39 (13 segment signals, 3 common signals)
4 52 (13 segment signals, 4 common signals)
Waveform B External resistance
division, internal
voltage boosting,
capacitor split
1/3 4
Table 14-2. Maximum Number of Pixels (2/5)
(b) 44-pin products
Drive Waveform for
LCD Driver
LCD Driver Voltage
Generator
Bias Mode Number of
Time Slices
Maximum Number of Pixels
Waveform A External resistance
division
−
Static 22 (22 segment signals, 1 common signal)
1/2 2 44 (22 segment signals, 2 common signals)
3 66 (22 segment signals, 3 common signals)
1/3 3
4 88 (22 segment signals, 4 common signals)
1/4 8 144 (18 segment signals, 8 common signals)
Internal voltage
boosting
1/3 3 66 (22 segment signals, 3 common signals)
4 88 (22 segment signals, 4 common signals)
1/4 8 144 (18 segment signals, 8 common signals)
Capacitor split
1/3 3 66 (22 segment signals, 3 common signals)
4 88 (22 segment signals, 4 common signals)
Waveform B External resistance
division, internal
voltage boosting
1/3 4
1/4 8 176 (22 segment signals, 8 common signals)
Capacitor split
1/3 4 88 (22 segment signals, 4 common signals)
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