STMicroelectronics STP08DP05 Manuals

ST STP08DP05 Low voltage 8-bit constant current LED sink with full outputs error detection handbook

The STP08DP05 is a monolithic, low voltage, low current power 8-bit shift register designed for LED panel displays. It contains a 8-bit serial-in, parallel-out shift register that feeds a 8-bit D-type storage register. Eight regulated current sources were designed to provide 5-100 mA constant current to drive the LEDs. The STP08DP05 is backward compatible with STP8C/L596 and extends its functionality with open and short detection on the outputs. The detection circuit checks for three different conditions on the output line: short to GND, short to VO, or open line. The data detection results are loaded in the shift register and shifted out via the serial line output. The detection functionality is implemented without increasing the pin number, using a secondary function of the output enable and latch pin (DM1 and DM2 respectively).