参数资料
型号: S1C63158B0A010R
元件分类: 微控制器/微处理器
英文描述: 4-BIT, FLASH, 4 MHz, MICROCONTROLLER, PBGA
文件页数: 25/159页
文件大小: 1200K
代理商: S1C63158B0A010R
112
EPSON
S1C63808 TECHNICAL MANUAL
CHAPTER 4: PERIPHERAL CIRCUITS AND OPERATION (Power Supply for EPD Driver IC)
4.14 Power Supply for EPD Driver IC (VC1–VC3)
4.14.1 Configuration of EPD system voltage circuit
The S1C63808 has a built-in power supply circuit that generates the voltages (VC1–VC3) for EPD driver
ICs. Figure 4.14.1.1 shows the configuration of the EPD system voltage circuit.
EPD system
voltage regulator
VC1
VC2
VC3
CA
CB
VC1
Voltage booster
LPWR
LC0–LC3
To EPD
driver IC
Connect the VC3 pin to VSS when 1/2 bias is selected.
Fig. 4.14.1.1 Configuration of EPD system voltage circuit
The EPD system voltage circuit generates VC1 with the voltage regulator built-in, and generates two other
voltages (VC2 = 2VC1, VC3 = 3VC1, VC3 = VSS when 1/2 bias is selected) by boosting VC1.
Note: Do not drive external loads with the output voltage from the EPD system voltage circuit except for
the exclusive EPD driver IC.
4.14.2 Mask option
Either 1/2 bias or 1/3 bias can be selected to configure the outputs from the EPD system voltage circuit.
When 1/3 bias is selected: VC1 = 1.03 to 1.23 V, VC2 = 2
× VC1, VC3 = 3 × VC1
When 1/2 bias is selected: VC1 = 1.08 to 1.84 V, VC2 = 2
× VC1, VC3 = VSS
4.14.3 Turning EPD system voltage circuit on and off
The EPD system voltage circuit is turned on and off using the LPWR register. When LPWR is set to "1",
the EPD system voltage circuit outputs the VC1–VC3 voltages to the EPD driver IC. When LPWR is set to
"0", the EPD system voltage circuit goes off and the VC1–VC3 terminals go to VSS level.
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