RTC-8564JE:B0 ROHS

Series:	--
Packaging:	Tape & Reel (TR)
Part Status:	Active
Type:	Clock/Calendar
Features:	Alarm, Y2K
Memory Size:	--
Time Format:	HH:MM:SS
Date Format:	YY-MM-DD-dd
Interface:	I²C, 2-Wire Serial
Voltage - Supply:	1.8 V ~ 5.5 V
Voltage - Supply, Battery:	--
Current - Timekeeping (Max):	0.7µA ~ 0.8µA @ 3V ~ 5V
Operating Temperature:	-40°C ~ 85°C
Mounting Type:	Surface Mount
Package / Case:	20-LSSOJ (0.213", 5.40mm Width)
Supplier Device Package:	20-VSOJ

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Real Time Clocks (RTC-8564JE:B0 ROHS)

Real Time Clocks (RTCs) are key components of many electronic devices, as they provide an accurate, consistent source of timekeeping information that can be synchronized to external, or “real”, time-keeping sources. The Real Time Clock (RTC-8564JE:B0 ROHS), referred to as “RTC-8564” hereinafter, is a high-performance, low-power real time clock (RTC) that offers power savings, reduced space requirements, and a wide variety of features, making it an ideal choice for embedded applications.

Application Field

RTC-8564 is designed to be used in a variety of embedded applications. It can be used in PC and PC-compatible systems, mobile phones, PDA’s, automotive and industrial applications, POS systems, and even medical applications. It is ideal for applications that require accurate timekeeping, such as calendars, sleep modes, delayed start/shutdown/resume functions, and digital recording systems. Additionally, the RTC-8564 is RoHS-compliant, making it suitable for more environmentally-friendly applications.

Working Principle

The RTC-8564 consists of a highly accurate Quartz crystal and a CMOS integrated circuit (IC). The quartz crystal source is used to maintain the accuracy of the clock, providing an exact frequency reference from which the time information is derived. The CMOS IC provides all the necessary power-management functions and interfaces, including an external switch for manual time setting. The RTC-8564 uses a switched capacitor voltage divider, controlled by automatic power-saving circuitry, to maintain its accuracy over the operating temperature range. This ensures that the clock stays accurate, even in the presence of large temperature variations. Additionally, the RTC-8564 has an automatic time-adjustment feature that allows for manual adjustment of the time with a single switch. The RTC-8564 includes a variety of alarms and interrupts, including programmable alarms, periodic alarms, and maskable interrupts. Alarms can be preset to trigger an event at a specified time, while maskable interrupts can be used to set up events that can be enabled and disabled as needed. Both of these features can be used to signal the end of a time period, trigger special functions, or alert personnel to an event. In addition to its built in features, the RTC-8564 includes several bus ports and control signals, allowing for connection to external modules and peripherals. The RTC-8564 is also pin-compatible with the PJRC-8564L and the PJRC-8564H, allowing for easy migration between the two devices.

Conclusion

RTC-8564 is an ideal choice for embedded applications that require accurate timekeeping. The device is RoHS-compliant, low-power, and features numerous features and programmable parameters. Its power-saving circuitry and automatic time-adjustment functions ensure that it stays accurate even in the presence of large temperature variations. The flexible bus ports and control signals allow for connection to external modules and peripherals, making it suitable for any application.

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