Planche à roulettes UT-M 7-Seg R Click

The UT-M 7-Seg R Click Board™ carries two SMD ultra thin 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-M 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 the 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

PINOUT DIAGRAM

This table shows how the pinout of the UT-M 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