Lcd8B Power Control Register - Epson S1C17W14 Technical Manual

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 15–12 –
11–8 LC[3:0]
7–5 –
4
3
2
1
0
Bits 15–12 Reserved
Bits 11–8 LC[3:0]
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."
Bit 3 Reserved
S1C17W14/W16 TECHNICAL MANUAL
(Rev. 1.2)
Bit name Initial
0x00
0x1
0x00
0x0
Table 18.8.2 Booster Clock Frequency
LCD8TIM2.BSTC[1:0] bits
0x3
0x2
0x1
0x0
: LCD8B operating clock frequency [Hz]
Bit name Initial
0x0
0x0
0x0
BSTEN 0
– 0
HVLD 0
VCSEL 0
VCEN 0
Table 18.8.3 LCD Contrast Adjustment
LCD8PWR.LC[3:0] bits
0xf
0xe
:
0x1
0x0
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
– R
H0 R/W
H0 R/W
H0 R/W
Contrast
High (dark)
↑
:
↓
Low (light)
18 LCD DRIVER (LCD8B)
Remarks
Remarks
18-17