STP16DPPS05 datasheet(22/35 Pages) STMICROELECTRONICS

部件名	STP16DPPS05

功能描述	Low voltage 16-bit constant current LED sink driver with output error detection and auto power-saving

PDF	35 Pages

Scroll/Zoom	100%

制造商	STMICROELECTRONICS [STMicroelectronics]

网页	http://www.st.com

标志

22 / 35 page

Error detection mode functionality

STP16DPPS05

22/35

DocID15817 Rev 3

Figure 23. Error detection sequence

Ignore

On the rising edge of f irst CLK pulse af ter the detection, the SDO

provides the Output status f eedback with the sequence Out 15;

Out 14…Out 0.

In this case all the outputs are in f ault condition (Open or Short)

This OE/DM2 pulse put the

device in Normal Mode

Condition af ter EDM test

Turn ON the output with the OE/DM2 pin and wait 1 µs to

have the correct output status acquisition. During this time

a minimum of three CLK pulses are required (2 at the

beginning and 1 at the end) to rewrite the shif t register.

OE/DM2 and LE/DM1

sequence signals to

start the error

detection sequence

Feeding 16 bit of CLK signal af ter

entering the EDM, the SDI signal, set to

1, is loaded in the shif t register

This LE/DM1 pulse latch

the data to the outputs

STP16DPPS05 数据表(PDF) 22 Page - STMicroelectronics