30 min

Immediately seize and safeguard essential data in the event of a power disruption with CY15B116QSN and PIC18F4682

Unlock the future of memory

Excelon-Ultra Click with Curiosity HPC

Published Nov 01, 2023

Click board™

Excelon-Ultra Click

Development board

Curiosity HPC


NECTO Studio



Boost the efficiency and speed of your design with FRAM memory technology



Hardware Overview

How does it work?

Excelon-Ultra Click is based on the CY15B116QSN, a high-performance 16-Mbit nonvolatile memory employing an advanced Infineon ferroelectric process. The memory array is logically organized as 2,097,152 × 8 bits and is accessed using an industry-standard serial peripheral interface (SPI) bus. The CY15B116QSN combines a 16-Mbit F-RAM with the high-speed Quad SPI SDR and DDR interfaces, enhancing FRAM technology's nonvolatile write capability. The key differences between the CY15B116QSN and a serial flash are the FRAM's superior write performance, high endurance, and lower power consumption. The CY15B116QSN is ideal for nonvolatile memory applications requiring frequent or rapid writes. Examples range from data collection, where the number of write cycles may be critical, to demanding industrial controls, where the long

write time of serial Flash can cause data loss. Excelon-Ultra Click communicates with MCU using an industry-standard SPI interface supporting the two most common modes, SPI Mode 0 and 3, with a maximum frequency 108MHz. Data is written to the memory array immediately after each byte is successfully transferred to the device. The following bus cycle can commence without the need for data polling. It supports 1e14 read/write cycles, or 100 million times more write cycles than EEPROM. In addition, the CY15B116QSN offers substantial write endurance compared to other nonvolatile memories. Furthermore, this Click board™ provides additional hardware-controlled functions. The configurable Write Protection function routed on the PWM pin of the mikroBUS™ socket protects all registers (including status and

configuration) from write operations when the SRWD bit (SR1[7]) is set to '1'. The WP pin must be held high to inhibit all the write operations to registers. When this pin is high, all memory and register writes are prohibited, and the address counter is not incremented. Also, it has a Reset feature routed to the RST pin on the mikroBUS™ socket, which, with a low logic level, puts the CY15B116QSN into a Reset state and, with a high level, operates the module normally. This Click board™ can be operated only with a 3.3V logic voltage level. The board must perform appropriate logic voltage level conversion before using MCUs with different logic levels. Also, it comes equipped with a library containing functions and an example code that can be used as a reference for further development.

Excelon-Ultra Click top side image
Excelon-Ultra Click bottom side image

Features overview

Development board

Curiosity HPC, standing for Curiosity High Pin Count (HPC) development board, supports 28- and 40-pin 8-bit PIC MCUs specially designed by Microchip for the needs of rapid development of embedded applications. This board has two unique PDIP sockets, surrounded by dual-row expansion headers, allowing connectivity to all pins on the populated PIC MCUs. It also contains a powerful onboard PICkit™ (PKOB), eliminating the need for an external programming/debugging tool, two mikroBUS™ sockets for Click board™ connectivity, a USB connector, a set of indicator LEDs, push button switches and a variable potentiometer. All

these features allow you to combine the strength of Microchip and Mikroe and create custom electronic solutions more efficiently than ever. Each part of the Curiosity HPC development board contains the components necessary for the most efficient operation of the same board. An integrated onboard PICkit™ (PKOB) allows low-voltage programming and in-circuit debugging for all supported devices. When used with the MPLAB® X Integrated Development Environment (IDE, version 3.0 or higher) or MPLAB® Xpress IDE, in-circuit debugging allows users to run, modify, and troubleshoot their custom software and hardware

quickly without the need for additional debugging tools. Besides, it includes a clean and regulated power supply block for the development board via the USB Micro-B connector, alongside all communication methods that mikroBUS™ itself supports. Curiosity HPC development board allows you to create a new application in just a few steps. Natively supported by Microchip software tools, it covers many aspects of prototyping thanks to many number of different Click boards™ (over a thousand boards), the number of which is growing daily.

Curiosity HPC double image

Microcontroller Overview

MCU Card / MCU




MCU Memory (KB)


Silicon Vendor


Pin count


RAM (Bytes)


Used MCU Pins

mikroBUS™ mapper

QSPI I03 / Reset
SPI Chip Select
SPI Clock
Power Supply
QSPI IO2 / Write Protection

Take a closer look


Excelon-Ultra Click Schematic schematic

Step by step

Project assembly

Curiosity HPC front no-mcu image hardware assembly

Start by selecting your development board and Click board™. Begin with the Curiosity HPC as your development board.

Curiosity HPC front no-mcu image hardware assembly
Thermo 28 Click front image hardware assembly
MCU DIP 40 hardware assembly
Prog-cut hardware assembly
Curiosity HPC MB 1 - upright/with-background hardware assembly
Necto image step 2 hardware assembly
Necto image step 3 hardware assembly
Necto image step 4 hardware assembly
Necto image step 5 hardware assembly
Necto image step 6 hardware assembly
Necto DIP image step 7 hardware assembly
Necto No Display image step 8 hardware assembly
Necto image step 9 hardware assembly
Necto image step 10 hardware assembly
Debug Image Necto Step hardware assembly

Track your results in real time

Application Output

After loading the code example, pressing the "DEBUG" button builds and programs it on the selected setup.

Application Output Step 1

After programming is completed, a header with buttons for various actions available in the IDE appears. By clicking the green "PLAY "button, we start reading the results achieved with Click board™.

Application Output Step 3

Upon completion of programming, the Application Output tab is automatically opened, where the achieved result can be read. In case of an inability to perform the Debug function, check if a proper connection between the MCU used by the setup and the CODEGRIP programmer has been established. A detailed explanation of the CODEGRIP-board connection can be found in the CODEGRIP User Manual. Please find it in the RESOURCES section.

Application Output Step 4

Software Support

Library Description

This library contains API for Excelon-Ultra Click driver.

Key functions:

  • excelonultra_write_data_to_memory - Write data starting from specified memory address

  • excelonultra_read_data_from_memory - Read data starting from specified memory address

  • excelonultra_clear_data_from_memory -Clears data starting from specified memory address

Open Source

Code example

This example can be found in NECTO Studio. Feel free to download the code, or you can copy the code below.

 * @file main.c
 * @brief ExcelonUltra Click example
 * # Description
 * This example is showcase of device and it's library abillity.
 * In this example is shown device ID, ability to manipulate with memory.
 * After default configuration device IDs are logged. After that application
 * Writes data to memory, reads data from memory, clears data from memory and
 * checks if data is cleard by reading that same memory address.
 * The demo application is composed of two sections :
 * ## Application Init
 * Initializes MCU modules for communication used in this application (UART, SPI).
 * Calls default configuration that resets device, reads IDs, and enables writing to
 * memory and sets all RAM memory to be free for conrol.
 * ## Application Task
 * Write data to memory, read data from memory. After that clears that memory address,
 * and checks if it's cleared by reading data. On every iteration of the fucntion 
 * writing data is changed between "MikroE" and "Excelon-Ultra Click"
 * @author Luka Filipovic

#include "board.h"
#include "log.h"
#include "excelonultra.h"

#define MIKROE_DATA "MikroE"
#define CLICK_DATA "Excelon-Ultra Click"

static excelonultra_t excelonultra;
static log_t logger;

void application_init ( void ) 
    log_cfg_t log_cfg;  /**< Logger config object. */
    excelonultra_cfg_t excelonultra_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.
    excelonultra_cfg_setup( &excelonultra_cfg );
    EXCELONULTRA_MAP_MIKROBUS( excelonultra_cfg, MIKROBUS_1 );
    err_t init_flag  = excelonultra_init( &excelonultra, &excelonultra_cfg );
    if ( init_flag == SPI_MASTER_ERROR ) 
        log_error( &logger, " Application Init Error. " );
        log_info( &logger, " Please, run program again... " );

        for ( ; ; );

    excelonultra_default_cfg ( &excelonultra );
    log_printf( &logger, " > Manufacturer ID: 0x%.4X\r\n", excelonultra.manufacturer_id );
    log_printf( &logger, " > Product ID: 0x%.4X\r\n", excelonultra.product_id );
    log_printf( &logger, " > Density ID: 0x%.2X\r\n", excelonultra.density_id );
    log_printf( &logger, " > Die Rev: 0x%.2X\r\n", excelonultra.die_rev );
    log_printf( &logger, " > Unique ID: 0x%.2X" , excelonultra.unique_id[ 7 ] );
    log_printf( &logger, "%.2X" , excelonultra.unique_id[ 6 ] );
    log_printf( &logger, "%.2X" , excelonultra.unique_id[ 5 ] );
    log_printf( &logger, "%.2X" , excelonultra.unique_id[ 4 ] );
    log_printf( &logger, "%.2X" , excelonultra.unique_id[ 3 ] );
    log_printf( &logger, "%.2X" , excelonultra.unique_id[ 2 ] );
    log_printf( &logger, "%.2X" , excelonultra.unique_id[ 1 ] );
    log_printf( &logger, "%.2X\r\n" , excelonultra.unique_id[ 0 ] );
    Delay_ms( 1000 );
    log_info( &logger, " Application Task " );

void application_task ( void ) 
    static uint32_t memory_address = 0x00000055;
    static uint8_t data_selection = 1;
    static uint8_t write_len;
    char to_write[ 50 ] = { 0 };
    char read_from[ 50 ] = { 0 };
    if (data_selection)
        strcpy( to_write, MIKROE_DATA );
        data_selection = !data_selection;
        strcpy( to_write, CLICK_DATA );
        data_selection = !data_selection;
    write_len = strlen( to_write );
    log_printf( &logger, " > Writing data to memory: %s\r\n", to_write );
    excelonultra_write_data_to_memory( &excelonultra, memory_address, to_write, write_len );
    Delay_ms( 500 );
    excelonultra_read_data_from_memory( &excelonultra, memory_address, read_from, write_len );
    log_printf( &logger, " > Read data from memory: %s\r\n", read_from );

    Delay_ms( 500 );

    log_printf( &logger, " > Clearing data from memory\r\n" );
    excelonultra_clear_data_from_memory( &excelonultra, memory_address, write_len );
    Delay_ms( 500 );
    excelonultra_read_data_from_memory( &excelonultra, memory_address, read_from, write_len );
    log_printf( &logger, " > Read data from memory: %s\r\n", read_from );

    log_printf( &logger, "***********************************\r\n" );
    Delay_ms( 500 );

void main ( void ) 
    application_init( );

    for ( ; ; ) 
        application_task( );

// ------------------------------------------------------------------------ END

Additional Support