Document
I. General
LED Driver Control IC
TM1651
TM1651 is a LED (Light Emitting Diode) driver control IC with keyboard scan interface. Its
internal integration includes MCU digital interface, data latch, LED high-voltage drive, keyboard scan,
etc. With good performance and reliable quality, the product is mainly applied to display driver of
electromagnetic oven, microwave oven and small household appliances. It adopts SOP16/DIP16
packaging.
II. Features
• Power CMOS technology. • Display (7 segments×4 bits), CA LED display supported • Key scanning (7×1bit): enhanced anti-jamming key identification circuit • Brightness adjustment circuit (8 levels of duty ratio, adjustable) • Serial interface (CLK, DIO) • Oscillation: built-in RC oscillator (450KHz+5%) • Built-in power-on reset circuit • Built-in automatic blanking circuit • Packaging: DIP16/SOP16
III. Pin Definitions
GND SEG1/KS1 SEG2/KS2 SEG3/KS3 SEG4/KS4 SEG5/KS5 SEG6/KS6 SEG7/KS7
1 2 3 4 5 6 7 8
16 K1 15 CLK .