Real Time Clocks

What is a Real Time Clock?A Real Time Clock (RTC) is a computer clock which is usually in the form of an integrated circuit. They have been designed to keep track of time, in real time - hence the product name. A Real Time Clock is usually an integral part of the computer motherboard. More often than not, a RTC will also include a calendar and an alarmHow do Real Time Clocks work?The memory on the clocks system stores system descriptions and set up values such as "Current Time Value". The information that is held in the RTC is read with a microprocessor, commonly over a serial interface which facilitate the performance of the software functions that are time dependant. They are designed to run on an ultra-low power consumption, often run on a lithium battery source or normal power. This power source allows them to continue running and generating real time when a system is down. The newer models of RTC use super-capacitors as a source of power that can be recharged and soldered to the board.Some Real Time Clocks feature synchronisation to an external signal, such as a compensated power line frequency. It allows the device to provide an accurate result without having an on-board temperature compensation scheme. RTC Time Values Year Month Date Hours Minutes Seconds

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제품설명 단가 Functions Date Format Time Format User RAM Bus Type Mounting Type Package Type Pin Count Dimensions Length Width Height Maximum Operating Supply Voltage Maximum Operating Temperature
RS 제품 번호 124-2362
제조사 부품 번호PCF8563T/5,518
제조사NXP
₩1,023.00
Each (On a Reel of 2500)
수량
Calendar, Clock YY:MM:DD:dd HH:MM:SS - Serial-2 Wire, Serial-I2C Surface Mount SOIC 8 5 x 4 x 1.45mm 5mm 4mm 1.45mm 5.5 V +85 °C
RS 제품 번호 865-2208
제조사 부품 번호PCF8563T/5,518
제조사NXP
₩1,061.75
Each (In a Pack of 10)
수량
Calendar, Clock YY:MM:DD:dd HH:MM:SS - Serial-2 Wire, Serial-I2C Surface Mount SOIC 8 5 x 4 x 1.45mm 5mm 4mm 1.45mm 5.5 V +85 °C
RS 제품 번호 166-1602
제조사 부품 번호PCF8563TS/4,118
제조사NXP
₩2,123.50
Each (On a Reel of 2500)
수량
Alarm, Battery Backup, Calendar, Watchdog Timer DW:DM:M:Y HH:MM:SS - Serial-I2C Surface Mount TSSOP 8 3.1 x 3.1 x 0.95mm 3.1mm 3.1mm 0.95mm 5.5 V +85 °C
RS 제품 번호 727-5743
제조사 부품 번호PCA8565TS/1,118
제조사NXP
₩2,092.50
Each (In a Pack of 2)
수량
Alarm, Calendar, Interrupt, Timer DW:DM:M:Y HH:MM:SS - Serial-I2C Surface Mount TSSOP 8 3.1 x 3.1 x 0.95mm 3.1mm 3.1mm 0.95mm 5.5 V +125 °C
RS 제품 번호 166-0314
제조사 부품 번호PCA8565TS/1,118
제조사NXP
₩1,376.40
Each (On a Reel of 2500)
수량
Alarm, Calendar, Interrupt, Timer DW:DM:M:Y HH:MM:SS - Serial-I2C Surface Mount TSSOP 8 3.1 x 3.1 x 0.95mm 3.1mm 3.1mm 0.95mm 5.5 V +125 °C
RS 제품 번호 511-103
제조사 부품 번호PCF8563TS/4,118
제조사NXP
₩2,163.80
Each (In a Pack of 5)
수량
Alarm, Battery Backup, Calendar, Watchdog Timer DW:DM:M:Y HH:MM:SS - Serial-I2C Surface Mount TSSOP 8 3.1 x 3.1 x 0.95mm 3.1mm 3.1mm 0.95mm 5.5 V +85 °C
RS 제품 번호 727-5731
제조사 부품 번호PCF2123TS/1,112
제조사NXP
₩1,559.30
Each (In a Pack of 2)
수량
Alarm, Calendar, Interrupt, Timer DW:DM:M:Y HH:MM:SS - Serial-SPI Surface Mount TSSOP 14 5.1 x 4.5 x 0.95mm 5.1mm 4.5mm 0.95mm 5.5 V +85 °C