4554 Datasheet, PDF (49/138 Pages) Renesas Technology Corp – SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER

4554 Group
1/2 Duty, 1/2 Bias: When writing (XX10)2 to address M (1, 14, 8) in RAM.
M (1, 14, 8)
COM0 _{0 (bit 0)}
COM1 ₁
COM1
1 flame (2/F)
1/F
X
X ^{(bit 3)}
SEG16
COM0
SEG16
COM1
SEG16
ON
COM0
SEG16
OFF
1/3 Duty, 1/3 Bias: When writing (X101)2 to address M (1, 14, 8) in RAM.
M (1, 14, 8)
COM0 _{1 (bit 0)}
COM1 ₀
COM2 ₁
X ^{(bit 3)}
SEG16
COM2
COM1
COM0
1 flame (3/F)
1/F
SEG16
COM2
SEG16
ON
COM1
SEG16
OFF
COM0
SEG16
ON
1/4 Duty, 1/3 Bias: When writing (1010)2 to address M (1, 14, 8) in RAM.
M (1, 14, 8)
COM0 _{0 (bit 0)}
COM1 ₁
COM2 ₀
COM3 _{1 (bit 3)}
SEG16
COM3
COM2
COM1
1 flame (4/F)
1/F
COM0
F : LCD clock frequency
SEG16
X: Set an arbitrary value.
(These bits are not related to
set the drive waveform at each duty.)
Fig. 36 LCD controller/driver structure
COM3
SEG16
ON
COM2
SEG16
OFF
COM1
SEG16
ON
COM0
SEG16
OFF
Rev.3.00 Aug 06, 2004 page 49 of 136
REJ03B0043-0300Z
Voltage level
VL C3
VLC1=VLC2
VSS
VL C3
VLC1=VLC2
VSS
Voltage level
VL C3
VL C2
VLC1
VSS
VLC3
VLC2
VL C1
VSS
Voltage level
VLC3
VLC2
VLC1
VSS
VLC3
VLC2
VLC1
VSS