Breakout board for the TPIC6B595 power shift register. This PCB is intended for driving large, multi LED chip 7 segment displays such as 4" high Common Anode displays. All pins are broken out on the board and it has provision for current limiting resistors on the LED segments.

As the TPIC6B595 is a sink driver, these boards can only be used with Common Anode displays. They are daisy chained by simply plugging them together. The 10K pullup resistor is connected to the SRCLR pin which in most cases can be left as-is and not connected to the microcontroller as the SPI libraries do not use this pin. It is broken out onto the input and output connectors if the user wishes to use it. The 10K resistor should only be fitted to one board if daisy chained.

Provision is provided for filter & smoothing capacitors on the PCB with a 0.1uF and 10uF capacitor on the 5V rail and a 33uF capacitor on the LED anode supply, which in most cases 12V is fine. Component values are printed on the PCB silkscreen.

This listing is for a BLANK PCB ONLY - photo 3 shows a completed PCB so you can see what it would look like with components fitted.

Example project (a large clock using 4" displays) can be found on my blog site in the documentation link below.