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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.
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.
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
Clock, alarm clock
Power down time synchronization
Datasheet
Clock Example
Timer Example
Alarm Example
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.
| Specifications | Parameters |
|---|---|
Clock chip
HYM8563
Crystal Frequency
32.768kHz
Communication interface
I2C, addr: 0x51, bus max speed 400Kbps
Power supply voltage
5V DC
Net weight
4.1g
Gross Weight
8.3g
Product Dimensions
48 * 24 * 8mm
Package Size
136 * 92 * 13mm
