UT-L 7-Seg R Click Board™

Product Code: MIKROE-2743

The UT-L 7-Seg R Click Board™ carries two SMD ultra thin (3.1mm) LED 7-SEG displays and the MAX6969 constant-current LED driver from Maxim Integrated. The click is designed to run on either 3.3V or 5V power supply. It communicates with the target microcontroller over SPI interface. DISPLAY FEATURES How Does The UT-L 7-Seg R Click Board™Work? The 7 segment displays are interfaced to the MCU over the MAX6969 16-port, constant-current LED driver IC. It uses the common 4-wire serial bus for communication with MCU itself (LE, SCK, SDO, SDI on mikroBUS™ pin socket). There is an additional OE (output enable) pin which is used to control the output driver state (enabled/disabled). Since it is the PWM output pin on the mikroBUS™ by default, the LED segments light intensity could be controlled by software too. MAX6969 DRIVER FEATURES The MAX6969 uses the industry-standard, shift-register-plus-latch-type serial interface. The driver accepts data shifted into a 16-bit shift register using data input DIN and clock input CLK.

Input data appears at the DOUT output 16 clock cycles later to allow cascading of multiple MAX6969s . So, the IC allows you to connect multiple click boards™ - for applications that require more than two seven segment displays, such as digital clocks, temperature sensors, etc. SPECIFICATIONS Type 7-segment,LED Segment Applications Displaying digits and letters on two 7 segment displays On-board modules MAX6969 6-Port, 5.5V Constant-Current LED Driver Key Features Excellent character appearance, low power consumption Interface GPIO,SPI Compatibility mikroBUS Click board size L (57.15 x 25.4 mm) Input Voltage 3.3V or 5V PINOUT DIAGRAM This table shows how the pinout of UT-L 7-Seg R 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 OE PWM control of light intensity NC 2 RST INT 15 NC Load-Enable input LE 3 CS TX 14 NC Clock input SCK 4 SCK RX 13 NC Serial Data Output SDO 5 MISO SCL 12 NC Serial Data Input SDI 6 MOSI SDA 11 NC Power supply +3.3V 7 3.3V 5V 10 +5V Power supply Ground GND 8 GND GND 9 GND Ground JUMPERS AND SETTINGS Designator Name Default Position Default Option Description JP1 PRW.SEL. Down 3V3 Power Supply Voltage Selection 3V3/5V, down position 3V3, up position 5V