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TM1628A Datasheet(PDF) 1 Page - Shenzhen Tianwei Electronics Co., Ltd

Part # TM1628A
Description  LED drive control dedicated circuit
Download  18 Pages
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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) 1 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
- 1 -
V1.1
一、 概述
TM1628A是一种带键盘扫描接口的LED(发光二极管显示器)驱动控制专用IC,内部集成有MCU
数字接口、数据锁存器、LED 驱动、键盘扫描等电路。本产品质量可靠、稳定性好、抗干扰能力
强。主要适用于家电设备(智能热水器、微波炉、洗衣机、空调、电磁炉)、机顶盒、电子称、智
能电表等数码管或LED显示设备。
二、 特性说明
• 采用CMOS工艺
• 多种显示模式(10 段×7 位 ~ 13段×4 位)
• 最大支持矩阵按键10×2
• 辉度调节电路(8 级占空比可调)
• 串行接口(CLK,STB,DIO)
• 振荡方式:内置RC振荡
• 内置上电复位电路
• 内置数据锁存电路
• 内置针对LED反偏漏电导致暗亮问题优化电路
• 抗干扰能力强
• 封装形式:SOP28
三、 管脚定义:
8
21
K2
7
22
K1
6
23
STB
5
24
CLK
4
25
3
26
DIO
2
27
NC
1
28
VDD
GRID4
GRID3
GND
GRID2
GRID1
GND
GND
SEG6/KS6
SEG5/KS5
SEG4/KS4
SEG3/KS3
SEG2/KS2
SEG1/KS1
VDD
KS9/SEG9
KS10/SEG10
GRID7/SEG12
GRID6/SEG13
KS8/SEG8
GRID5/SEG14
15
16
17
18
19
20
14
13
12
11
10
9
TM1628A
(TOP VIEW)
SEG7/KS7


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