Holtek HT16H25, Инструкции по применению, Страница: 11 / 22

HT16H25 Treadmill Display Application Guideline
AN0505E V1.00 11 / 22 January 8, 2019
The Charge Pump can have the following coefficients: ×2, ×3, ×4 or ×5. Note that V
0
/V
LCD
is not allowed to be greater than 12V due to process limitations.
Charge Pump
(=V
REG
)
C
3P
C
3N
C
1N
C
1P
C
2P
C
2N
V3
V4
V2
V1
V0 V
0
/V
LCD
Charge Pump
× 2
C
3P
C
3N
C
1N
C
1P
C
2P
C
2N
V3
V4
V2
V1
V0
V
1
V
0
/V
LCD
Charge Pump
× 3
C
3P
C
3N
C
1N
C
1P
C
2P
C
2N
V3
V4
V2
V1
V0
V
2
V
1
V
0
/V
LCD
Charge Pump
× 4
C
3P
C
3N
C
1N
C
1P
C
2P
C
2N
V3
V4
V2
V1
V0
V
3
V
2
V
1
V
0
/V
LCD
Charge Pump
× 5
C
3P
C
3N
C
1N
C
1P
C
2P
C
2N
V3
V4
V2
V1
V0
V
3
V
4
V
2
V
1
V
0
/V
LCD
The Charge Pump input voltage comes from either V
DD
or the Internal Regulator, where
the Internal Regulator's output range is 1.0V~4.1V. The relationship between the Charge
Pump coefficient and the output voltage is shown in the table below. Note that the output
voltage of the Charge Pump cannot be higher than 12V.
Charge Pump
Input Voltage
Charge Pump
Output Voltage(V)
Charge Pump
Input Voltage
Charge Pump
Output Voltage(V)
Regulator
1.0 1.0 2.0 3.0 4.0 5.0
Regulator
2.7 2.7 5.4 8.1 10.8 13.5
1.1 1.1 2.2 3.3 4.4 5.5 2.8 2.8 5.6 8.4 11.2 14.0
1.2 1.2 2.4 3.6 4.8 6.0 2.9 2.9 5.8 8.7 11.6 14.5
1.3 1.3 2.6 3.9 5.2 6.5 3.0 3.0 6.0 9.0 12.0 15.0
1.4 1.4 2.8 4.2 5.6 7.0 3.1 3.1 6.2 9.3 12.4 15.5
1.5 1.5 3.0 4.5 6.0 7.5 3.2 3.2 6.4 9.6 12.8 16.0
1.6 1.6 3.2 4.8 6.4 8.0 3.3 3.3 6.6 9.9 13.2 16.5
1.7 1.7 3.4 5.1 6.8 8.5 3.4 3.4 6.8 10.2 13.6 17.0
1.8 1.8 3.6 5.4 7.2 9.0 3.5 3.5 7.0 10.5 14.0 17.5
1.9 1.9 3.8 5.7 7.6 9.5 3.6 3.6 7.2 10.8 14.4 18.0
2.0 2.0 4.0 6.0 8.0 10.0 3.7 3.7 7.4 11.1 14.8 18.5
2.1 2.1 4.2 6.3 8.4 10.5 3.8 3.8 7.6 11.4 15.2 19.0
2.2 2.2 4.4 6.6 8.8 11.0 3.9 3.9 7.8 11.7 15.6 19.5
2.3 2.3 4.6 6.9 9.2 11.5 4.0 4.0 8.0 12.0 16.0 20.0
2.4 2.4 4.8 7.2 9.6 12.0 4.1 4.1 8.2 12.3 16.4 20.5
2.5 2.5 5.0 7.5 10.0 12.5
VDD
3.3 3.3 6.6 9.9 13.2 16.5
2.6 2.6 5.2 7.8 10.4 13.0 5 5.0 10.0 15.0 20.0 25.0
x2, 1/2 bias → V1 V0 x2, 1/2 bias → V1 V0
x3, 1/3 bias → V2 V1 V0 x3, 1/3 bias → V2 V1 V0
x4, 1/4 bias → V3 V2 V1 V0 x4, 1/4 bias → V3 V2 V1 V0
x5, 1/ 5 bias → V4 V3 V2 V1 V0 x5, 1/5 bias → V4 V3 V2 V1 V0
●
Charge Pump Input Voltage Setting Command
Command R/W Bit7 Bit6 Bit5 Bit4 Bit3 Bit2 Bit1 Bit0 Def.
Charge Pump
Input Voltage
Setting
W 1 1 0 0 0 0 0 0 C0h
W VS RE X RV4 RV3 RV2 RV1 RV0 00h