ST7565S
V5 output voltage is controlled by two registers: V5 voltage
regulator internal resistor ratio and the electronic volume.
Figures 9 shows V5 output levels with different internal
resistance ratio and different electric volume.
V5
UNIT:V
Ta=25°Cand booster off ,regulator,followeron VSS=-3V
-15
-14
-13
-12
-11
-10
-9
111
110
101
100
011
010
-8
001
000
-7
-6
V5voltageregulator
internal resistor ratioset
D2,D1,D0
-5
-4
-3
-2
Electronicvolumeregistered
-1
D5~D0
3FH
0
00H
1FH
Figure 9 : Voltage Regulator Output (V5)
Note: The internal Voltage Regulator output has the thermal gradient of -0.05%/°C.
Example: Set V5 = –7V
Using Figure 9 and the following parameters.
(Ta = 25°C and temperature gradient = –0.05%/°C):
Table 12
Register
D5 D4 D3 D2 D1 D0
Contents
V5 regulator resistor ratio
Electronic Volume
–
1
–
0
–
0
0
1
1
0
0
1
At this time, the variable range and the notch width of the V5
voltage is shown in Table 13.
The voltage level of V5 depends on the electronic volume.
Table 13
V5
Variable Range
Notch width
Min
Typ
Max
Units
–8.4
(EV=63)
–7.0
(EV=1,0,0,1,0,1)
–5.1
(EV=0)
V
51
mV
Ver 0.6c
35/72
2009/09/07
SITRONIX [ SITRONIX TECHNOLOGY CO., LTD. ]
