DS3231M MEMS 정교 RTC 모듈
(DS3231M MEMS Precise RTC)
개요
- 본 제품은 DS3231M MEMS 정교 RTC 모듈입니다.
- MEMS 리소네이터와 온도 보정기를 내장한 DS3231M 칩을 탑재한 제품입니다.
- Qaurtz crystal 클럭을 탑재한 제품에 비해 기계적인 에러가 날 위험을 줄여주어 진동이 있는 환경에서 사용이 가능합니다.
- 코일셀 배터리로 동작하며, 정교하게 시간정보를 유지합니다.
특징
- Operating Voltage: 3.3V-5.5V
- IIC Address: 0x68
- Timing Range: 1970~2100 year
- Operating Temperature: -40°C to +85°C
- Timing Precision: ±5ppm (±0.432 s/D)
- Dimension: 22.5*21mm / 0.886*0.827inch
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The RTC based on MEMS has already passed both shock tests and vibration tests that certified by ACE-Q100. It can withstand 2900g mechanical shock (JESD22-B104C Condition-H) and 20g variable frequency vibration (JESD22-B103B Condition-1).
The DS3231M can be powered by a coin cell battery and can still maintain accurate timing even the mains are disconnected. RTC provides information about seconds, minutes, hours, days, months, and years. It can automatically adjust the end date of the month and the leap year correction. The clock format can be 24 hours or 12 hours with AM/PM indication. It provides two programmable calendar alarms and one 1Hz square wave output. In addition, the RST check pin can be used as a key input for microprocessor reset.