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參數(shù)資料
| 型號(hào)： | M34552G8FP |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 4-BIT, OTPROM, 6 MHz, MICROCONTROLLER, PQFP48 |
| 封裝： | 7 X 10 MM, 0.65 MM PITCH, PLASTIC, QFP-48 |
| 文件頁(yè)數(shù)： | 88/143頁(yè) |
| 文件大?。?/td> | 0K |
| 代理商： | M34552G8FP |
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Rev.3.02
Dec 22, 2006
page 47 of 142
REJ03B0023-0302
4552 Group
(5) LCD power supply circuit
Select the LCD power supply circuit suitable for the using LCD
panel.
The LCD power supply circuit is fixed by the followings;
The internal dividing resistor is controlled by bit 0 of register L2.
The internal dividing resistor is selected by bit 3 of register L1.
The bias condition is selected by bits 0 and 1 of register L1.
qInternal dividing resistor
The 4552 Group has the internal dividing resistor for LCD power
supply.
When bit 0 of register L2 is set to “0”, the internal dividing resis-
tor is valid. However, when the LCD is turned off by setting bit 2
of register L1 to “0”, the internal dividing resistor is turned off.
The same six resistor (r) is prepared for the internal dividing re-
sistor. According to the setting value of bit 3 of register L1 and
using bias condition, the resistor is prepared as follows;
L13 = “0”, 1/3 bias used: 2r 3 = 6r
L13 = “0”, 1/2 bias used: 2r 2 = 4r
L13 = “1”, 1/3 bias used: r 3 = 3r
L13 = “1”, 1/2 bias used: r 2 = 2r
qVLC3/SEG0 pin
The selection of VLC3/SEG0 pin function is controlled with the bit
3 of register L2.
When the VLC3 pin function is selected, apply voltage of VLC3 <
VDD to the pin externally.
When the SEG0 pin function is selected, VLC3 is connected to
VDD internally.
q VLC2/SEG1, VLC1/SEG2 pin
The selection of VLC2/SEG1 pin function is controlled with the bit
2 of register L2.
The selection of VLC1/SEG2 pin function is controlled with the bit
1 of register L2.
When the VLC2 pin and VLC1 pin functions are selected and the
internal dividing resistor is not used, apply voltage of
0<VLC1<VLC2<VLC3 to these pins. Short the VLC2 pin and VLC1
pin at 1/2 bias.
When the VLC2 pin and VLC1 pin functions are selected and the
internal dividing resistor is used, the dividing voltage value gen-
erated internally is output from the VLC1 pin and VLC2 pin. The
VLC2 pin and VLC1 pin have the same electric potential at 1/2 bias.
When SEG1 and SEG2 pin functions are selected, use the inter-
nal dividing resistor. In this time, VLC2 and VLC1 are connected to
the generated dividingg voltage.
Fig. 36 LCD power supply circuit example (1/3 bias condition selected)
VLC3
VLC2
VLC1
SEG0
SEG1
SEG2
VLC3
VLC2
VLC1
VLC3
SEG1
SEG2
a) Register L2=(0000)2
b) Register L2=(1000)2
VLC3
VLC2
VLC1
VLC3
VLC2
VLC1
VLC3
VLC2
VLC1
c) Register L2=(1110)2
d) Register L2=(1111)2
VLC3
VLC2
VLC1
相關(guān)PDF資料 |
PDF描述 |
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| M34552M8H-XXXFP | 4-BIT, MROM, 6 MHz, MICROCONTROLLER, PQFP48 |
| M34552G8HFP | 4-BIT, OTPROM, 6 MHz, MICROCONTROLLER, PQFP48 |
| M34556G8HFP | 4-BIT, OTPROM, 6 MHz, MICROCONTROLLER, PDSO42 |
| M34556M8-XXXFP | 4-BIT, MROM, 6 MHz, MICROCONTROLLER, PDSO42 |
| M34556M8H-XXXFP | 4-BIT, MROM, 6 MHz, MICROCONTROLLER, PDSO42 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| M34552G8HFP | 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER |
| M34552M4H-XXXFP | 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER |
| M34552M4-XXXFP | 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER |
| M34552M8H-XXXFP | 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER |
| M34552M8-XXXFP | 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER |
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