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17 LCD DRIVER (LCD8B)
LCD8B Timing Control Register 2
Register name
Bit
LCD8TIM2
15–10 –
9–8 BSTC[1:0]
7–3 –
2–0 NLINE[2:0]
Bits 15–10 Reserved
Bits 9–8
BSTC[1:0]
These bits select the booster clock frequency for the LCD voltage booster.
f
CLK_LCD8B
Bits 7–3
Reserved
Bits 2–0
NLINE[2:0]
These bits enable the n-line inverse AC drive function and set the number of inverse lines. For more
information, refer to "n-Segment-Line Inverse AC Drive."
LCD8B Power Control Register
Register name
Bit
LCD8PWR
15–13 –
12–8 LC[4:0]
7–5 –
4
3
2
1
0
Bits 15–13 Reserved
Bits 12–8 LC[4:0]
These bits set the LCD panel contrast.
Bits 7–5
Reserved
Bit 4
BSTEN
This bit turns the LCD voltage booster on and off.
1 (R/W): LCD voltage booster on
0 (R/W): LCD voltage booster off
For more information, refer to "LCD Power Supply."
17-20
Bit name
Initial
0x00
0x1
0x00
0x0
Table 17.8.2 Booster Clock Frequency
LCD8TIM2.BSTC[1:0] bits
0x3
0x2
0x1
0x0
: LCD8B operating clock frequency [Hz]
Bit name
Initial
0x0
0x00
0x0
BSTEN
0
BISEL
1
HVLD
0
VCSEL
0
VCEN
0
Table 17.8.3 LCD Contrast Adjustment
LCD8PWR.LC[4:0] bits
0x1f
0x1e
:
0x01
0x00
Seiko Epson Corporation
Reset
R/W
–
R
–
H0
R/W
–
R
H0
R/W
Booster clock frequency [Hz]
f
/64
CLK_LCD8B
f
/32
CLK_LCD8B
f
/16
CLK_LCD8B
f
/4
CLK_LCD8B
Reset
R/W
–
R
–
H0
R/W
–
R
H0
R/W
H0
R/W
H0
R/W
H0
R/W
H0
R/W
Contrast
High (dark)
↑
:
↓
Low (light)
S1C17W15 TECHNICAL MANUAL
Remarks
Remarks
(Rev. 1.3)
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