Use a vibrant 16-segment alphanumeric display to illuminate your projects with clear numerical and textual information – perfect for applications that demand visibility and a touch of modern display sophistication
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Hardware Overview
How does it work?
AlphaNum G 2 Click is based on the LTP-3862, a dual-digit 16-segment alphanumeric green display from Lite-ON. It has a 75mW of power disipation per segment. The TLC5947, a 24-channel 12-bit PWM LED driver from Texas Instruments, drives all these LED segments. It is a constant current sink LED driver with adjustable 4096 pulse width modulation (PWM) on each channel individually. The PWM control is repeated automatically with the programmed grayscale data. An external resistor sets the constant current to around 10mA.
The LED driver features thermal shutdown, auto display repeat, noise reduction, and more. AlphaNum G 2 Click uses a standard 4-Wire SPI serial interface to communicate with the host MCU, supporting a clock frequency of up to 30MHz. A Blank BLK pin can turn all constant current outputs OFF while initializing the grayscale PWM timing. This can be achieved by writing the High logic state on the Blank pin. You can also turn off every display separately, no matter the LED driver IC, over the CA1 and CA2
pins. These pins control the common anode pins of the displays. This 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. Also, this 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.
Features overview
Development board
PIC18F57Q43 Curiosity Nano evaluation kit is a cutting-edge hardware platform designed to evaluate microcontrollers within the PIC18-Q43 family. Central to its design is the inclusion of the powerful PIC18F57Q43 microcontroller (MCU), offering advanced functionalities and robust performance. Key features of this evaluation kit include a yellow user LED and a responsive
mechanical user switch, providing seamless interaction and testing. The provision for a 32.768kHz crystal footprint ensures precision timing capabilities. With an onboard debugger boasting a green power and status LED, programming and debugging become intuitive and efficient. Further enhancing its utility is the Virtual serial port (CDC) and a debug GPIO channel (DGI
GPIO), offering extensive connectivity options. Powered via USB, this kit boasts an adjustable target voltage feature facilitated by the MIC5353 LDO regulator, ensuring stable operation with an output voltage ranging from 1.8V to 5.1V, with a maximum output current of 500mA, subject to ambient temperature and voltage constraints.
Microcontroller Overview
MCU Card / MCU

Architecture
PIC
MCU Memory (KB)
128
Silicon Vendor
Microchip
Pin count
48
RAM (Bytes)
8196
You complete me!
Accessories
Curiosity Nano Base for Click boards is a versatile hardware extension platform created to streamline the integration between Curiosity Nano kits and extension boards, tailored explicitly for the mikroBUS™-standardized Click boards and Xplained Pro extension boards. This innovative base board (shield) offers seamless connectivity and expansion possibilities, simplifying experimentation and development. Key features include USB power compatibility from the Curiosity Nano kit, alongside an alternative external power input option for enhanced flexibility. The onboard Li-Ion/LiPo charger and management circuit ensure smooth operation for battery-powered applications, simplifying usage and management. Moreover, the base incorporates a fixed 3.3V PSU dedicated to target and mikroBUS™ power rails, alongside a fixed 5.0V boost converter catering to 5V power rails of mikroBUS™ sockets, providing stable power delivery for various connected devices.
Used MCU Pins
mikroBUS™ mapper
Take a closer look
Click board™ Schematic

Step by step
Project assembly
Software Support
Library Description
This library contains API for AlphaNum G 2 Click driver.
Key functions:
alphanumg2_display_character- AlphaNum G 2 display character function.alphanumg2_set_led_output- AlphaNum G 2 set LED output function.
Open Source
Code example
The complete application code and a ready-to-use project are available through the NECTO Studio Package Manager for direct installation in the NECTO Studio. The application code can also be found on the MIKROE GitHub account.
/*!
* @file main.c
* @brief AlphaNum G 2 Click example
*
* # Description
* This example demonstrates the use of the AlphaNum G 2 Click board™
* by writing and displaying the desired alphanumeric characters.
*
* The demo application is composed of two sections :
*
* ## Application Init
* Initialization of SPI module and log UART.
* After driver initialization, the app executes a default configuration.
*
* ## Application Task
* The demo application displays digits from '0' to '9',
* symbols: colon, semicolon, less-than, equals-to, greater-than, question mark, at sign
* and capital alphabet letters, on both alphanumeric segments of the Click.
* Results are being sent to the UART Terminal, where you can track their changes.
*
* @author Nenad Filipovic
*
*/
#include "board.h"
#include "log.h"
#include "alphanumg2.h"
#define ASCII_CHARACTER_DIGIT_0 '0'
#define ASCII_CHARACTER_UPPERCASE_Z 'Z'
static alphanumg2_t alphanumg2;
static log_t logger;
static uint8_t character = ASCII_CHARACTER_DIGIT_0;
void application_init ( void )
{
log_cfg_t log_cfg; /**< Logger config object. */
alphanumg2_cfg_t alphanumg2_cfg; /**< Click config object. */
/**
* Logger initialization.
* Default baud rate: 115200
* Default log level: LOG_LEVEL_DEBUG
* @note If USB_UART_RX and USB_UART_TX
* are defined as HAL_PIN_NC, you will
* need to define them manually for log to work.
* See @b LOG_MAP_USB_UART macro definition for detailed explanation.
*/
LOG_MAP_USB_UART( log_cfg );
log_init( &logger, &log_cfg );
log_info( &logger, " Application Init " );
// Click initialization.
alphanumg2_cfg_setup( &alphanumg2_cfg );
ALPHANUMG2_MAP_MIKROBUS( alphanumg2_cfg, MIKROBUS_1 );
if ( SPI_MASTER_ERROR == alphanumg2_init( &alphanumg2, &alphanumg2_cfg ) )
{
log_error( &logger, " Communication init." );
for ( ; ; );
}
if ( ALPHANUMG2_ERROR == alphanumg2_default_cfg ( &alphanumg2 ) )
{
log_error( &logger, " Default configuration." );
for ( ; ; );
}
log_info( &logger, " Application Task " );
log_printf( &logger, "------------------------\r\n" );
Delay_ms ( 100 );
}
void application_task ( void )
{
log_printf( &logger, " %c %c\r\n", character, character + 1 );
if ( ALPHANUMG2_OK == alphanumg2_display_character( &alphanumg2,
character, ALPHANUMG2_BRIGHTNESS_MAX,
character + 1, ALPHANUMG2_BRIGHTNESS_MAX ) )
{
character++;
if ( ASCII_CHARACTER_UPPERCASE_Z <= character )
{
character = ASCII_CHARACTER_DIGIT_0;
log_printf( &logger, "------------------------\r\n" );
Delay_ms ( 1000 );
}
}
}
int main ( void )
{
/* Do not remove this line or clock might not be set correctly. */
#ifdef PREINIT_SUPPORTED
preinit();
#endif
application_init( );
for ( ; ; )
{
application_task( );
}
return 0;
}
// ------------------------------------------------------------------------ END
Additional Support
Resources
Category:LED Segment


































