Unit RTC

SKU:U126

Description

UNIT RTC is a programmable real-time clock module, integrated HYM8563 low-power CMOS real-time clock/calendar chip, using I2C communication interface, full-coverage case can effectively protect the circuit, making its operation more stable. Applicable to a variety of embedded devices, instruments and instruments as a system clock.

Role of RTC

Most MCUs are built-in timers, which usually start working automatically when the hardware is powered on, and reset when the hardware is powered off. The built-in timer can handle some simple timing tasks, but if we want to implement data timestamp recording, clock, alarm clock and other time-span functions, a system power-independent clock RTC is the best choice.

Features

• Support second/minute/hour/day/month/year. time data reading and writing
• 32.768kHz high-precision clock crystal, greatly reducing the time error
• Low power consumption, coin battery can work continuously for years
• With century mark
• I2C communication interface

Includes

• 1x Unit RTC
• 1x Coin cell battery (38mAh)
• 1x HY2.0-4P cable

Applications

• Clock, alarm clock
• Power down time synchronization

Specifications

Schematic

Related Links

• Datasheet
  • HYM8563

Model Size

Example

Arduino

• M5Unit-RTC - with M5Series
• M5Unit-RTC III with M5Atom
• M5Unit-RTC III with M5Core
• M5Unit-RTC III with M5Core2
• M5Unit-RTC III with M5StickC
• M5Unit-RTC III with M5StickCPlus

UIFlow Example

• Clock Example
  

• Timer Example
  

• Alarm Example
  

UIFlow

• Set RTC(year(0 - 99), month, date, weekday(1 - 7), hour, minute, second)
  • weekday
    • 1: Sunday
    • 2: Monday
    • 3: Tuesday
    • 4: Wednesday
    • 5: Thursday
    • 6: Friday
    • 7: Saturday

• Get RTC
  Get list of RTCData. ex. (22, 7, 23, 6, 13, 0, 0)
  notice: Before UIFlow v1.10.1
  • year(0 - 99)
  • month(1 - 12)
  • date(0 - 31)
  • weekday(1:Sunday - 7:Saturday)
  • hour(0 - 23)
  • minute(0 - 59)
  • second(0 - 59)

• Get RTC
  Get RTCData.
  notice: After UIFlow v1.10.2
  • year(0 - 99)
  • month(1 - 12)
  • date(0 - 31)
  • weekday(1:Sunday - 7:Saturday)
  • hour(0 - 23)
  • minute(0 - 59)
  • second(0 - 59)

• Set alarm (date, hour, minute)
  Set the alarm date and time.

• Check alarm flag
  Returns True at the specified date and time.

• Turn off alarm
  Turn off alarm and reset alarm flag.

• Disable alarm

• Set timer value(count, unit)
  Set timer in minutes or seconds.

• Get timer value
  Get current timer count.

• Check timer flag
  Returns True at the specified date and time.

• Turn off timer
  Reset timer flag. but timer count don't stop.

• Disable timer. Reset timer flag and count stop .

• Pause timer.
  Pause timer count.

• Resume timer.
  Resume after pause is executed.

Video