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SC6803 Datasheet(PDF) 9 Page - SHENZHEN FUMAN ELECTRONICS CO., LTD.

Part # SC6803
Description  LED driver IC
Download  14 Pages
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Manufacturer  FUMAN [SHENZHEN FUMAN ELECTRONICS CO., LTD.]
Direct Link  http://www.superchip.cn
Logo FUMAN - SHENZHEN FUMAN ELECTRONICS CO., LTD.

SC6803 Datasheet(HTML) 9 Page - SHENZHEN FUMAN ELECTRONICS CO., LTD.

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深圳市富满电子有限公司
SHENZHEN FUMAN ELECTRONICS CO., LTD.
SC6803(文件编号:S&CIC0807)
LED 驱动 IC
第 9 页 共 14 页
度值自动产生相应占空比的驱动输出,数据传输完毕后,MCU 可以处理其他事务,此期间各 SC6803 将继续
保持原占空比的驱动输出(FREE-RUN 模式),直至 MCU 发出下一组的更新数据为止。
注意:在 DCLK 的上沿把所有数据打入芯片的过程结束后,需要多发送若干个 DCLK 脉冲(DIN = 0),原
则上传输链中有多少组点就多发相应数目的脉冲,这是为了让后续芯片内置的锁相再生电路能够正常工作所必
须的。
为了使 SC6803 仅用较少的数据产生更细腻的灰度层次,当 GMODE = 0/CMODE = 0 时,芯片内置的
SUPER-PWM 机制可以把 5 比特的数据转换为非线性的 256 级灰度输出,最小开启宽度为 1T,最大开启宽度
为 256T(T 为灰度时钟源周期)。
当 GMODE = 1 或悬空时,输出为线性 32 级灰度,最小开启宽度为 4T,最大开启宽度为 128T。
C51 例程
//SDO,SCLK 为数据和输出口,位变量,nDots 为灯的个数
//本程序公适用于 GMODE = 1, CMODE = 1 的情况
//首先输出 32 个
‗0‘的起始帧
SCLK = 0;
SDO = 0;
for (i = 0;i <32;i ++ )
{SCLK = 1;SCLK = 0;}
//再输出 nDots 点的数据,这里假设各点的颜色都是(dr,dg,db)
// dr,db,dg 为红绿兰的灰度值 0-31
for (i = 0;i <nDots;i ++ )
{
SDO = 1;SCLK = 1; SCLK = 0;
//首先输出 1 个
‗1‘起始位
//输出 5 位红色数据
Mask = 0x10;
for (j = 0;j <32;j ++ )
{
if (mask & dr )
SDO = 1;
else
SDO = 0;
SCLK = 1;SCLK = 0;
mask >>=1;
}
//输出 5 位绿色数据
Mask = 0x10;


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