Mikroelektronika d.o.o.
Tableau de clic RTC 21
Tableau de clic RTC 21
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Key Features:
- Faible consommation d'énergie, sortie d'onde carrée programmable, interface I2C haute vitesse, compteur d'horloge/calendrier, format 24 heures, RAM de 56 octets, compensation automatique de l'année lunaire, commutation de sauvegarde automatique, etc.
- Basé sur le PT7C4311 - horloge en temps réel (RTC) de Diodes Incorporated
- Peut être utilisé pour diverses applications de chronométrage, y compris les alarmes quotidiennes, les applications de comptage et d'autres nécessitant un RTC précis pour leur fonctionnement
- mikroBUS : interface I2C
Présentation du RTC 21 Click Board™ - Votre solution de chronométrage compacte et précise
Vous cherchez un moyen fiable de suivre l'heure ? Le RTC 21 Click Board™ est là pour vous aider ! Ce tableau complémentaire compact est conçu pour garder l'heure avec précision et vous fournir une gamme de fonctionnalités utiles pour améliorer votre expérience.
Fonctionnalités avancées pour une mesure précise du temps
La carte RTC 21 Click Board™ est équipée du PT7C4311, un module d'horloge en temps réel configurable I2C de Diodes Incorporated. Grâce aux fonctions de calendrier et d'heure, vous pouvez facilement accéder à des informations telles que l'heure, la minute, la seconde, le jour, la date, le mois, l'année et le siècle. De plus, la carte fonctionne avec un indicateur au format 24 heures, dispose d'une compensation automatique des années bissextiles et d'une faible consommation d'énergie, ce qui en fait une solution idéale pour diverses applications de chronométrage.
Simplifiez le développement de vos logiciels
La carte RTC 21 Click Board™ est entièrement prise en charge par une bibliothèque compatible mikroSDK, qui comprend des fonctions qui simplifient le développement logiciel. La carte Click™ étant un produit entièrement testé, vous pouvez être sûr qu'elle est prête à être utilisée sur un système équipé du socket mikroBUS™, ce qui en fait une solution simple et sans tracas pour vos besoins de chronométrage.
Obtenez votre RTC 21 Click Board™ dès aujourd'hui
Ne vous contentez pas de moins que le meilleur lorsqu'il s'agit de suivre le temps. Commandez votre RTC 21 Click Board™ dès aujourd'hui et découvrez la précision et la fiabilité dont vous avez besoin pour vos alarmes quotidiennes, vos applications de mesure et autres opérations urgentes.
How Does The RTC 21 Click Board™ Work?
The RTC 21 Click Board™ is based on the PT7C4311, an ultra-low power, real-time clock (RTC) time-keeping device from Diodes Incorporated. The PT7C4311 is configured to transmit calendar and time data to the MCU (24-hour format) based on a 32.768kHz quartz crystal and comes with 56 bytes of general-purpose RAM. It reads and writes clock/calendar data from and to the MCU in units ranging from seconds to the last two digits of the calendar year, providing seconds, minutes, hours, dates, days, months, year, and century information. The end-of-the-month date is automatically adjusted for months with fewer than 31 days, including corrections for the leap year until 2100.
The RTC 21 Click Board™ communicates with MCU using the standard I2C 2-Wire interface to read data and configure settings, supporting a Fast Mode operation up to 400kHz. It also incorporates one open-drain output labelled as FT, which can be used as a frequency test signal (512Hz square-wave password for frequency test purposes) or as a register-configurable output DC level when square-wave is disabled. The PT7C4311 also includes an automatic backup switchover circuit allowing it to be used with a single-button cell battery for an extended period.
The RTC 21 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 | RTC |
| Applications | Can be used for various time-keeping applications, including daily alarms, metering applications, and others requiring an accurate RTC for their operation |
| On-board modules | PT7C4311 - real-time clock (RTC) from Diodes Incorporated |
| Key Features | Low power consumption, programmable square-wave output, high-speed I2C interface, clock/calendar counter, 24-hour format, 56 bytes RAM, automatic lepa year compensation, automatic backup switchover, 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 RTC 21 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 | FT | Frequency Test/DC Level | |
| 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 | Logic Level Voltage Selection 3V3/5V: Left position 3V3, Right position 5V |
RTC 21 CLICK ELECTRICAL SPECIFICATIONS
| Description | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Supply Voltage | 3.3 | - | 5 | V |
| Memory Size | - | - | 56 | bytes |
| Date Format | YY-MM-DD | |||
| Time Format | HH:MM:SS (24 hr) | |||
Software Support
Software Support
We provide a library for the RTC 21 Click Board™ as well as a demo application (example), developed using MikroE compilers. The demo can run on all the main MikroE development boards.
The package can be downloaded/installed directly from NECTO Studio The package Manager (recommended), downloaded from our LibStock™ or found on MikroE Github account.
Library Description
This library contains API for the RTC 21 Click Board™ driver.
Key functions
-
rtc21_set_timeThis function sets the starting time values - second, minute and hour. -
rtc21_set_dateThis function sets the starting date values - day of week, day, month and year. -
rtc21_read_timeThis function reads the current time values - second, minute and hour.
Example Description
This example demonstrates the use of the RTC 21 Click Board™ by reading and displaying the time and date values.
void application_task ( void )
{
if ( RTC21_OK == rtc21_read_time ( &rtc21, &time ) )
{
log_printf( &logger, " Time: %.2u:%.2u:%.2urn",
( uint16_t ) time.hour, ( uint16_t ) time.minute, ( uint16_t ) time.second );
}
if ( RTC21_OK == rtc21_read_date ( &rtc21, &date ) )
{
log_printf( &logger, " Date: %s, %.2u.%.2u.20%.2u.rn",
rtc21_get_day_of_week_name ( date.day_of_week ),
( uint16_t ) date.day, ( uint16_t ) date.month, ( uint16_t ) date.year );
}
Delay_ms ( 1000 );
}
The full application code, and ready to use projects can be installed directly from NECTO Studio The package Manager (recommended), downloaded from our LibStock™ or found on MikroE Github account.
Other MikroE Libraries used in the example:
- MikroSDK.Board
- MikroSDK.Log
- Click.RTC21
Additional Notes and Information
Depending on the development board you are using, you may need USB UART Click Board™, USB UART 2 Click or RS232 Click to connect to your PC, for development systems with no UART to USB interface available on the board. A UART terminal is available in all MikroE compilers.
MIKROSDK
The RTC 21 Click Board™ is supported with mikroSDK - MikroE Software Development Kit. To ensure proper operation of mikroSDK compliant Click board™ demo applications, mikroSDK should be downloaded from LibStock and installed for the compiler you are using.
Tableau de clic RTC 21
Frequently Asked Questions
Ask a Question-
What kind of applications is the RTC 21 Click Board™ suitable for?
The RTC 21 Click Board™ is suitable for a variety of time-sensitive applications, including daily alarms, metering applications, and other time-sensitive operations.
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How can the RTC 21 Click Board™ simplify software development?
The RTC 21 Click Board™ is fully supported by a mikroSDK compliant library, which includes functions that simplify software development. With the Click board™ coming as a fully tested product, you can be sure that it's ready to be used on a system equipped with the mikroBUS™ socket, making it an easy and hassle-free solution for your time-keeping needs.
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What functions does the RTC 21 Click Board™ offer?
The RTC 21 Click Board™ offers a range of functions to accurately keep the time of the day, including hour, minute, second, day, date, month, year, and century. It operates in a 24-hour format indicator, has automatic leap year compensation, and low power consumption.
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What is the RTC 21 Click Board™?
The RTC 21 Click Board™ is an add-on board that helps keep track of time. It features the PT7C4311, an I2C-configurable real-time clock module from Diodes Incorporated, which provides time and calendar functions, making it an ideal solution for various time-keeping applications.