參數(shù)資料
型號(hào)： HD61602
廠商： Hitachi,Ltd.
英文描述： Segment Type LCD Driver(段類型LCD驅(qū)動(dòng)器)
中文描述： 段類型LCD驅(qū)動(dòng)器（段類型液晶驅(qū)動(dòng)器）
文件頁(yè)數(shù)： 27/37頁(yè)
文件大小： 229K
代理商： HD61602
HD61602/HD61603
1256
When Internal Drive Power Supply Is Used
When the internal drive power supply is used, attach C1–C4 for charge pump circuits and variable
resistance R1 for deciding display drive voltage to HD61602 as shown in Figure 20.
Internal voltage is available by setting external voltage switching bits of mode setting data 0.
Figure 21 shows voltage characteristics between VDD and VREF1. Voltage is divided at R1, and then
input into VREF2. Voltage between VDD and VREF2 is equivalent to V in Figure 21, and so VLCD
can be changed by regulating the voltage.
VREF2 is usually regulated by variable resistance, but when replacing R1 with two nonvariable
resistances take VREF1 between max and min into consideration as shown in Figure 21.
Internal drive power supply is generated by using capacitance, and so large current cannot flow. When
large liquid crystal display panel is used, examine the external drive power supply.
Regulator
Voltage follower
Charge
pump
circuit
2
×
(V1
– VDD)
3
×
(V1
– VDD)
HD61602
VDD
VSS
Vref1
Vref2
VC1
VC2
V1
V2
V3
COM
SEG0
SEG1
SEG2
1
11
16
17
18
19
20
21
22
C6
C5
R1
r
1
r
2
C2
C3
C4
Power
LCD
R1 = 1 M
variable
C1 = 0.3
μ
F
C2–C4 = 0.3
μ
F
C5 = 0.1 to 0.3
μ
F
C6
≥
1
μ
F
23–26
77
76
75
+
–
Figure 20 Example
相關(guān)PDF資料
PDF描述
HD61604 Segment Type LCD Driver(段類型LCD驅(qū)動(dòng)器)
HD61605 Segment Type LCD Driver(段類型LCD驅(qū)動(dòng)器)
HD61830A00H LCDC (LCD Timing Controller)
HD61830 LCDC (LCD Timing Controller)
HD61830B LCDC (LCD Timing Controller)
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
HD61602R 制造商:HITACHI 制造商全稱:Hitachi Semiconductor 功能描述:SEGMENT TYPE LCD DRIVER
HD61602RH 制造商:HITACHI 制造商全稱:Hitachi Semiconductor 功能描述:SEGMENT TYPE LCD DRIVER
HD61603 制造商:HITACHI 制造商全稱:Hitachi Semiconductor 功能描述:SEGMENT TYPE LCD DRIVER
HD61603R 制造商:HITACHI 制造商全稱:Hitachi Semiconductor 功能描述:SEGMENT TYPE LCD DRIVER
HD61604 制造商:未知廠家 制造商全稱:未知廠家 功能描述:LCD Display Driver
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