专用于高温应用的实时时钟

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实时时钟

RTC模块将32.768kHz音叉晶体谐振器与CMOS的振荡器和RTC IC集成在一个小型SMD陶瓷封装中。 -40°C至+125°C的工作温度范围，保证了在恶劣环境下仍有可靠的时间源。

Real-Time Clock (RTC) Modules

Low Frequency Product catalog

RTC Overview Table

Download

	Type	Package [mm]	Interface	Features	Current @ 3V	Time Accuracy @ 25°C	Temp Comp -40/85°C	VDD min	VDD max	Temp. max	Documents	Temp. read back	Clock Out	Battery Switch	Battery Charge	Charge Pump	Time Stamp	Alarm	Timer	Unix Time	Offset Comp	RAM [bytes]	EEPROM [bytes]

	RV-8803-C7	3.2 x 1.5 x 0.8	I²C		240 nA		±3.0 ppm	1.5 V	5.5 V	+105°C	数据表应用手册勘误表 Free Samples		✓				✓	✓	✓		✓	1
	RV-3129-C3	3.7 x 2.5 x 0.9	I²C		800 nA	±3.0 ppm	±6.0 ppm	1.3 V	5.5 V	+125°C	数据表应用手册 Free Samples	✓	✓	✓	✓			✓	✓			8	2
	RV-3029-C2	5.0 x 3.2 x 1.2	I²C		800 nA	±3.0 ppm	±6.0 ppm	1.3 V	5.5 V	+125°C	数据表应用手册	✓	✓	✓	✓			✓	✓			8	2
	RV-3149-C3	3.7 x 2.5 x 0.9	SPI		800 nA		±6.0 ppm	1.3 V	5.5 V	+125°C	数据表应用手册 Free Samples	✓	✓	✓	✓			✓	✓			8	2
	RV-3049-C2	5.0 x 3.2 x 1.2	SPI		800 nA		±6.0 ppm	1.3 V	5.5 V	+125°C	数据表应用手册	✓	✓	✓	✓			✓	✓			8	2