LED Driver 19 Click Board™

Product Code: MIKROE-5639

How Does The LED Driver 19 Click Board™ Work? The LED Driver 19 Click Board™ is based on the LED1202, a 12-channel low quiescent current LED driver from STMicroelectronics. Its internal non-volatile memory can store up to 8 different patterns, each with a particular output configuration, thus enabling automatic sequencing without MCU intervention. Each channel has an output PWM dimming frequency of 220Hz in a 12-bit resolution. Analog dimming range is from 1 up to 20mA, in 256 steps per channel, and common to all patterns. In addition, using one of the PWM or analog modes, you can use both of them to achieve full control of LED brightness. This LED driver also features a built-in open LED detection and thermal shutdown function that turns OFF all output drivers during an over-temperature condition. The LED Driver 19 Click Board™ uses a standard I2C 2-Wire interface to communicate with the host MCU. The I2C address can be selected via two ADDR SEL jumpers, where 0 is selected by default on both.

The LED1202 driver can generate an interrupt on the INT pin if a fault or condition occurs; by that, it means an open LED, overtemperature, pattern end, and frame start. The INT pin informs the system about those statuses with active LOW. The LED Driver 19 Click Board™ can operate with either 3.3V or 5V logic voltage levels selected via the VCC SEL jumper. This way, both 3.3V and 5V capable MCUs can use the communication lines properly. However, the Click board™ comes equipped with a library containing easy-to-use functions and an example code that can be used, as a reference, for further development. SPECIFICATIONS Type LED Drivers Applications Can be used for color mixing and backlight application for amusement products, LED status signalization, home automation projects, and more On-board modules LED1202 - 12-channel low quiescent current LED driver from STMicroelectronics Key Features 12 individual LED channels, 12-bit PWM control, 8-bit analog control, thermal shutdown protection, low power consumption, 8 programmable pattern sequences in non-volatile memory, fault flag pin, high efficiency and performance, and more Interface I2C Compatibility mikroBUS Click board size M (42.9 x 25.4 mm) Input Voltage 3.3V or 5V PINOUT DIAGRAM This table shows how the pinout of the LED Driver 19 Click Board™ corresponds to the pinout on the mikroBUS™ socket (the latter shown in the two middle columns). Notes Pin Pin Notes NC 1 AN PWM 16 NC NC 2 RST INT 15 INT Fault Interrupt NC 3 CS RX 14 NC NC 4 SCK TX 13 NC NC 5 MISO SCL 12 SCL I2C Clock NC 6 MOSI SDA 11 SDA I2C Data Power Supply 3.3V 7 3.3V 5V 10 5V Power Supply Ground GND 8 GND GND 9 GND Ground ONBOARD SETTINGS AND INDICATORS Label Name Default Description LD1 PWR - Power LED Indicator JP1 VCC SEL Left Power/Logic Voltage Level Selection 3V3/5V: Left position 3V3, Right position 5V JP2-JP3 ADDR SEL Right I2C Address Selection 0/1: Left position 0, Right position 1 LED DRIVER 19 CLICK ELECTRICAL SPECIFICATIONS Description Min Typ Max Unit Supply Voltage 3.3 - 5 V Maximum Output Current per Channel - - 20 mA