6276

6276 LED Driver

The 6276 LED driver is useful for controlling multiple LEDs. It extends the output of the microprocessor.

Here are the parts you will need:

6276 LED driver (available here)

• one Board (eagle files)
• one 24 pin socket
• one polarized 1uf capacitor

The 6276 LED driver is a shift register capable of handling the milliamps required to drive an LED. It is controlled digitally through four wires from a microcontroller.

Smething you should notice is that the output pin of the chip connects to the ground leg (Cathode) of the LED. The power leg of the LED is connected to a power source. This is called "sinking" the LED.

Pin Description:

• SDI - Serial Data input
• CLK - Serial clock input
• LE - Latch Enable
• OE - Output Enable
• SDO - Serial Data output. This is used for cascading multiple 6276 drivers
• Rext - Connect a resistor to this pin from ground. 220 ohm is a good start
• +5 - Logic Supply
• GND - Ground
• OUT15 - OUT0 - Outputs, connect LED ground to selected pin