s6b0724 Densitron Corporation, s6b0724 Datasheet - Page 33

• Manufacturer Part Number: s6b0724
• Description: 132 Seg / 65 Com Driver & Controller For Stn Lcd
• Manufacturer: Densitron Corporation

S6B0724
In Case of Using Internal Resistors, Ra and Rb. (INTRS = "H")
When INTRS pin is "H", resistor Ra is connected internally between VR pin and V
V0 and VR. We determine V0 by two instructions, "Regulator Resistor Select" and "Set Reference Voltage".
The following figure shows V0 voltage measured by adjusting internal regulator resistor ratio (Rb / Ra) and 6-bit
electronic volume registers for each temperature coefficient at Ta = 25 C.
1+(Rb / Ra)
V0
[V]
16.00
14.00
12.00
10.00
8.00
6.00
4.00
2.00
0.00
PRELIMINARY SPEC. VER. 1.1
0
0 0 0
Table 15. Internal Rb / Ra Ratio depending on 3-bit Data ( R2 R1 R0 )
3.0
8
0 0 1
3.5
16
Figure 18. Electronic Volume Level
Electronic volume level
0 1 0
4.0
24
3-bit data settings (R2 R1 R0)
32
0 1 1
132 SEG / 65 COM DRIVER & CONTROLLER FOR STN LCD
4.5
40
1 0 0
5.0
48
SS
1 0 1
5.5
, and Rb is connected between
56
1 1 0
6.0
(1 1 1)
(1 1 0)
(1 0 1)
(1 0 0)
(0 1 1)
(0 1 0)
(0 0 1)
(0 0 0)
1 1 1
6.4
29