EM65571AGH EMC [ELAN Microelectronics Corp], EM65571AGH Datasheet - Page 82

• Manufacturer Part Number: EM65571AGH
• Description: 130COM / 128SEG 65K Color STN LCD Driver
• Manufacturer: EMC [ELAN Microelectronics Corp]

EM65571
130COM/128SEG 65K Color STN LCD Driver
76 •
8.2.8 LCD Duty (DS)
Note: During a reset: {DS3, DS2, DS1, DS0} = 0H, read address: CH
The DS register is set to LCD display duty.
Partial display can be made possible by setting an arbitrary duty ratio.
8.2.9 Booster Setup (VU)
Note: During a reset: {VU2, VU1, VU0} = 0H, read address: DH
The booster steps setting for the VU register
D7
D7
1
1
DS3
0
0
0
0
0
0
0
0
1
1
1
1
1
VU2
The asterisk “*” mark means “Don’t care”
0
0
0
0
1
1
1
1
D6
D6
1
1
AMPON Command
AMPON = “0”: The internal OP-AMP circuit OFF
AMPON = ”1”: The internal OP-AMP circuit ON
The internal OP-AMP circuit block (voltage regulator, electronic volume, and
voltage conversion circuit) is set ON/OFF by this command.
DS2
0
0
0
0
1
1
1
1
0
0
0
0
1
D5
D5
0
0
D4
D4
0
0
VU1
DS1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
1
DS3 DS2 DS1 DS0
D3
D3
*
DS0
VU2 VU1 VU0
D2
D2
0
1
0
1
0
1
0
1
0
1
0
1
1
VU0
D1
D1
0
1
0
1
0
1
0
1
8-dot width display in Y-direction, 1/10 duty
16-dot width display in Y-direction, 1/18 duty
24-dot width display in Y-direction, 1/26 duty
32-dot width display in Y-direction, 1/34 duty
48-dot width display in Y-direction, 1/50 duty
64-dot width display in Y-direction, 1/66 duty
72-dot width display in Y-direction, 1/74 duty
80-dot width display in Y-direction, 1/82 duty
96-dot width display in Y-direction, 1/98 duty
104-dot width display in Y-direction, 1/106 duty
112-dot width display in Y-direction, 1/114 duty
120-dot width display in Y-direction, 1/122 duty
128-dot width display in Y-direction, 1/130 duty
D0
(This specification is subject to change without further notice)
D0
Booster disable (No operation)
2 times voltage output
3 times voltage output
4 times voltage output
5 times voltage output
6 times voltage output
7 times voltage output
Prohibit code
Display Width and Duty
CSB RS RDB WRB RE2 RE1 RE0
CSB RS RDB WRB RE2 RE1 RE0
Product Specification (V1.0) 08.04.2005
0
0
Booster Operation
1
1
1
1
0
0
0
0
0
0
0
0