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TM1628A Datasheet(PDF) 6 Page - Shenzhen Tianwei Electronics Co., Ltd

Part # TM1628A
Description  LED drive control dedicated circuit
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Manufacturer  TITANMEC [Shenzhen Tianwei Electronics Co., Ltd]
Direct Link  http://www.titanmec.com/
Logo TITANMEC - Shenzhen Tianwei Electronics Co., Ltd

TM1628A Datasheet(HTML) 6 Page - Shenzhen Tianwei Electronics Co., Ltd

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LED 驱动控制专用电路
TM1628A
©Titan Micro Electronics
www.titanmec.com
- 6 -
V1.1
2、驱动共阳极数码管:
GRID1
a
b
f
c
g
d
e
a
b
c
d
e
f
g
com
GRID1
GRID2
GRID3
GRID4
GRID5
GRID6
GRID7
SEG1
GRID2
GRID3
GRID4
GRID5
GRID6
GRID7
SEG1
图(8)
图8给出共阳极数码管的连接示意图,如果让该数码管显示“0”,要向地址单元C0H(GRID1)、C2H(GRID2)、
C4H(GRID3)、C6H(GRID4)、C8H(GRID5)、CAH(GRID6)里面分别写数据01H,其余的地址0CH(GRID7)单元全部写数
据00H。每一个SEG1-SEG8对应的数据如下表格。
SEG8
SEG7
SEG6
SEG5
SEG4
SEG3
SEG2
SEG1
0
0
0
0
0
0
0
1
GRID1(C0H)
0
0
0
0
0
0
0
1
GRID2(C2H)
0
0
0
0
0
0
0
1
GRID3(C4H)
0
0
0
0
0
0
0
1
GRID4(C6H)
0
0
0
0
0
0
0
1
GRID5(C8H)
0
0
0
0
0
0
0
1
GRID6(CAH)
0
0
0
0
0
0
0
0
GRID7(CCH)
B7
B6
B5
B4
B3
B2
B1
B0
▲注意:无论是驱动共阴极数码管还是驱动共阳极数码管,SEG引脚只能接LED的阳极,GRID只能接LED的阴极,不
可反接。
八、 键扫描和键扫数据寄存器:
该芯片最大支持的键扫矩阵为10×2bit,如下所示:
K1
K2
图(3)
键扫数据储存地址如下所示,先发读按键命令后,开始读取5字节的按键数据BYTE1—BYTE5,读数据从低位开
始输出,其中B7和B6位为无效位固定输出为0。芯片K和KS引脚对应的按键按下时,相对应的字节内的BIT位为1。


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