Analog Devices / Maxim Integrated DS3231M I²C实时时钟
低功率Maxim IC DS3231M是业界首个带内部MEMS谐振器的温度补偿式实时时钟。该Maxim IC成本低，极其精确。I²C RTC包含电池输入，设备主电源中断时保持精确计时。DS3231M在-40ºC-85ºC时可保持±5ppm（±0.432 秒/日）计时精度并有完整日历功能，包括秒、分、时、星期、日期、月、年和闰年补偿。DS3231M包括两个当日时间报警，还配有1Hz和32.768kHz输出。该Maxim IC RTC经过优化，可用于电表和工业应用，降低晶体出现机械故障的可能性。
特性
- Timekeeping accuracy ±5ppm (±0.432 Second/Day) from -40°C to +85°C
- Battery backup for continuous timekeeping
- Low power consumption
- Footprint and functionally compatible with DS3231
- Two Time-of-Day alarms
- 1Hz and 32.768kHz outputs
- Reset output and pushbutton input with debounce
- Fast (400kHz) I2C-compatible serial bus
- 2.3V to 5.5V supply voltage
- 16-Pin SO (300 mils) package
- Underwriters Laboratories (UL) recognized
应用
- Power meters
- Industrial applications
Typical Application Circuit
发布日期: 2011-03-31
| 更新日期: 2025-10-29