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18 LCD specification
*** OPTION
NO.18 ***
--- LCD SPECIFICATION ---
BIAS SELECTION
1. 1/3 B USE REGUL. LCD 3V
2. 1/3 B NOT USE REGUL. LCD 3V
3. 1/2 B NOT USE REGUL. LCD 3V
4. 1/3 B NOT USE REGUL. LCD 4.5V
PLEASE SELECT NO.(1) ? 1
DUTY SELECTION
1. 1/4 DUTY
2. 1/3 DUTY
3. 1/2 DUTY
PLEASE SELECT NO.(1) ? 1
BIAS SELECTION
1. 1/3 B USE REGUL. LCD 3V
DUTY SELECTION
1. 1/4 DUTY
Table 3.3.1 Common duty selection standard
Number of segments
1–96
97–144
145–192
4.5 V LCD panel
1/4, 1/3 or 1/2 duty, 1/3 bias
V
DD
V
S1
V
L1
V
L2
V
L3
CA
CB
V
SS
Note: V
is shorded to V
inside the IC
L2
SS
3 V LCD panel
1/4, 1/3 or 1/2 duty, 1/3 bias
V
DD
V
S1
V
L1
V
L2
V
L3
CA
CB
V
SS
Note: V
is shorded to V
L3
4.5 V LCD panel
1/4, 1/3 or 1/2 duty, 1/3 bias
V
DD
V
S1
V
L1
V
L2
V
L3
CA
CB
V
SS
Note: V
is shorded to V
L1
S5U1C60N08D MANUAL
(DEVELOPMENT SOFTWARE TOOL FOR S1C60N08)
SELECTED
SELECTED
Common duty
1/2
1/3
1/4
3.0 V
3 V LCD panel
1/4, 1/3 or 1/2 duty, 1/2 bias
V
3.0 V
V
inside the IC
SS
3 V LCD panel
1/4, 1/3 or 1/2 duty, 1/2 bias
V
1.5 V
V
inside the IC
SS
3 FUNCTION OPTION GENERATOR FOG6008
Select the common duty and bias.
When "1/3 B USE REGULATOR LCD 3V" is
selected, the internal regulator is used. The internal
regulator will generate V
When "1/3 B NOT USE REGULATOR LCD 3V"
is selected, the internal regulator is not used.
For the LCD drive bias, either 1/3 bias or 1/2 bias
can be selected.
See Figure 3.3.10 for the external elements
according to the bias to be selected.
When 1/2 duty is selected, up to 96 segments of
LCD panel can be driven with 2 COM terminals
and 48 SEG terminals. When 1/3 duty is selected,
up to 144 segments can be driven with 3 COM
terminals, and when 1/4 duty is selected, up to 192
segments with 4 COM terminals.
When 1/2 duty is selected, the COM0 and COM1
terminals are effective for COM output and the
COM2 and COM3 terminals always output an off
signal. When 1/3 duty is selected, the COM0 to
COM2 terminals are effective and the COM3
terminal always outputs an off signal.
For drive duty selection, refer to Table 3.3.1.
Figures 3.3.11 and 3.3.12 show the drive wave-
forms of 1/3 bias driving and 1/2 bias driving,
respectively.
DD
V
S1
V
L1
V
L2
V
L3
CA
3.0 V
CB
SS
DD
V
S1
V
L1
V
L2
V
L3
CA
1.5 V
CB
SS
Fig. 3.3.10
External elements for LCD power supply circuit
EPSON
(-1.05 V).
L1
17
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