RTC 모듈 -I2C, RV-3032-C7
(RTC 18 CLICK)
개요
- 본 제품은 RTC 모듈 -I2C, RV-3032-C7입니다.
- I2C로 설정이 가능한 RV-3032-C7 RTC 칩을 기반으로 디자인된 제품입니다.
- 온도가 보정된 RTC로 저전력이며 높은 정확성을 가지고 있는 제품입니다.
- 솔더 점퍼로 설정하여 3.3V/5V 시스템과 사용이 가능합니다.
특징
-
RTC 18 Click as its foundation uses the RV-3032-C7, a highly accurate real-time clock/calendar module optimized for low power operations from Micro Crystal AG. The RV-3032-C7 comes with a built-in 32.768kHz "Tuning Fork" crystal oscillator and HF oscillator and has counters for hundredths of seconds, seconds, minutes, hours, date, month, year, and weekday. Its temperature compensation circuitry is factory calibrated and results in the highest time accuracy of ±2.5ppm over the entire temperature range from -40 to +85°C, with an additional non-volatile aging offset correction.
This RTC also comes with an integrated digital thermometer for actual internal temperature measurement in °C with a typical accuracy of ±1°C, resolution of 0.0625°C/step, and a programmable alarm on top and bottom temperature limits. Alongside all these features, it also supports an automatic leap year correction. The calendar year will automatically be identified as a leap year when its last two digits are a multiple of 4. Consequently, leap years up to the year 2099 can automatically be recognized.
This 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 an alarm circuitry configured to generate an interrupt signal for Periodic Countdown Timer and Periodic Time Update (seconds, minutes), date/hour/minute alarm, and an external event registered with the CS pin on the mikroBUS™ socket. An alarm (interrupt) signal routed to the INT pin of the mikroBUS™ socket allows outputting warning every day or on a specific day visually indicated by a red LED marked as ALARM.
The RV-3032-C7 also includes an automatic backup switchover circuit allowing it to be used with a single button cell battery for an extended period. The activation of this feature can be made by positioning SMD jumpers labeled as BATT SEL in an appropriate position marked as OFF or ON. Besides an automatic backup switchover circuit, it also has a trickle charger with a charge pump providing full RTC functions with programmable counters, alarm, selectable interrupt, and programmable clock output functions for frequencies from 1Hz to 52MHz available on an onboard header labeled CLKO.
This Click board™ can operate with both 3.3V and 5V logic voltage levels selected via the VCC SEL jumper. This way, it is allowed for both 3.3V and 5V capable MCUs to 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 RV-3032-C7 - real-time clock/calendar module optimized for low power operations from Micro Crystal AG Key Features Low power consumption, temperature compensated, high accuracy, clock/calendar feature, battery back-up, programmable interrupt and clock output, automatic leap year recognition up to the year 2099, and more Interface I2C Compatibility mikroBUS Click board size M (42.9 x 25.4 mm) Input Voltage 3.3V or 5V
문서
연관제품
- 연관제품 1