PT7C4311 RTC 모듈 -I2C
(RTC 21 CLICK)
개요
- 본 제품은 PT7C4311 RTC 모듈 -I2C입니다.
- PT7C4311칩을 기반으로 디자인된 제품으로 I2C 인터페이스를 가지고 있습니다.
- 시간, 분, 초, 날, 달, 년도 정보를 제공할 수 있는 제품입니다.
특징
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HOW DOES IT WORK?
RTC 21 Click 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.
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 one open-drain output labeled 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.
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. 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