基本特点：

The STLED316S is a compact LED controller and driver that interface microprocessors to LED displays through a serial 3-wire interface. It drives LED connected in common anode configuration.

The STLED316S drives up to 48 discrete LEDs in 8 segment/6 digit configuration while functioning from a supply voltage of 5.0V. Additionally it can be used to drive 8 discrete LEDs which form a part of LED digit. The individual LEDs are wired as segments of a digit and brightness of these individual LEDs can be controlled digitally. The maximum segment current for the display digits is set through a single external resistor. Individual digits may be addressed and updated without rewriting the entire display.

方案描述：

The HR21 main board serves as the host (master), and the STEVAL-CBP005V1 demonstration board functions as a slave. The interface is an 11-pin connector cable, which provides all required device control signals, the 3.3 and 5 V supply, the reset and IR sensor data lines, and ground. The board also provides all necessary function switches as well as LEDs for function/status indication.

The STEVAL-CBP005V1 demonstration board must be connected to the host to function properly. Factory testing was completed using a test jig, which emulated the host.

16 x 3 mm blue LEDs for status and function indication

2 x 5 mm BiColor LEDs

12 front panel function keys

1 reset button on rear

Provision for mounting IR sensor and associated bias components

11-pin connector termination for easy interface to host

All data and power lines and additional signals available on connector

参考原理图：



                                      原理图