PETERMANN彼得曼定时晶振

EXTREMELY PRECISE TIMING WITH A LOW-COST REAL-TIME CLOCK IC，

As compared to conventional RTCs with external 32.768k quartz, extremely accurate application timing for maximum-accuracy time stamps is achieved at a minimal cost. Temperature stability is ±5 ppm within the -40° C to +85° C range, which makes a highly accurate absolute time offset of 15 seconds possible over that temperature range. In addition, the Low-Cost RTC1010 is pin-compatible with many different manufacturers

The 400 kHz I²C bus interface makes for easy integration into the application. In addition to numerous calendar functions, the RTC1010 offers an adjustable frequency output that provides a choice of highly accurate output frequencies (CMOS): 32.768kHz, 1,024 kHz or 1 Hz (for pulse-per-second applications). The output frequencies can be used to clock phase-locked loops or to generate other system frequencies. The RTC1010 in its compact 14-pin plastic housing can be operated at supply voltages from 1.6 V to approx. 5.5 V. 3.0 V is typical. At 3 V, the power consumption of the RTC1010 is less than 1.8 µA, making the RTC extremely well suited for battery-operated applications.

PETERMANN彼得曼定时晶振，利用低成本实时时钟IC实现极其精确的定时

与采用外部32.768kHz石英晶振的传统RTC相比，以最低的成本实现了最高精度时间戳的极其精确的应用时序。在-40°C至+85°C范围内，温度稳定性为±5ppm，这使得在该温度范围内实现±15秒的高精度绝对时间偏移成为可能。此外，低成本RTC1010与许多不同的制造商引脚兼容。
400 kHz I C总线接口便于集成到应用中。除了众多日历功能，RTC1010还提供可调频率输出，可选择高精度输出频率(CMOS): 32.768kHz、1.024 kHz或1Hz(针对每秒脉冲数应用)。输出频率可用于为锁相环提供时钟或产生其它系统频率。RTC1010采用紧凑型14引脚塑料外壳，可在1.6 V至约1.5V的电源电压下工作。5.5V。典型值为3.0V。3 V时，RTC1010的功耗低于1.8A，非常适合电池供电应用。

32.768KHz是款实时时钟晶振，它的作用是可以产生时序电路基准信号。而之所以选用32.768K是因为它是2的15次幂，是因为可以很精确的得到一秒的计时。不仅如此，包括所有的实时时钟晶振一般都是32.768K或其倍频。32.768K晶振的负载电容都是12.5pf。常用32.768K晶振的电子产品有智能手机、智能手环晶振、安防和可穿戴设备等等。也还有很多生活类、工业类电子也会常用到这款频率的进口晶振。