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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Description Price 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庫存編號 169-9344
製造零件編號BU9873FJ-GTE2
BrandROHM
TWD27.40
/個 (每包:10個)
單位
Real Time Clock YY:MM:DD:dd HH:MM:SS - Serial-I2C Surface Mount SOP 8 5.25 x 3.9 x 1.37mm 5.25mm 3.9mm 1.37mm 5.5 V +85 °C
RS庫存編號 185-1011
製造零件編號BU9873FVT-GE2
BrandROHM
TWD27.40
/個 (每包:10個)
單位
Real Time Clock YY:MM:DD:dd HH:MM:SS - Serial-I2C Surface Mount TSSOP 8 4.4 x 3 x 1mm 4.4mm 3mm 1mm 5.5 V +85 °C
RS庫存編號 169-9348
製造零件編號BU9873FVM-GTTR
BrandROHM
TWD27.40
/個 (每包:10個)
單位
Real Time Clock YY:MM:DD:dd HH:MM:SS - Serial-I2C Surface Mount MSOP 8 3.25 x 2.8 x 0.75mm 3.25mm 2.8mm 0.75mm 5.5 V +85 °C
RS庫存編號 185-0951
製造零件編號BU9873FVT-GE2
BrandROHM
TWD13.10
個 (在毎卷:3000)
單位
Real Time Clock YY:MM:DD:dd HH:MM:SS - Serial-I2C Surface Mount TSSOP 8 4.4 x 3 x 1mm 4.4mm 3mm 1mm 5.5 V +85 °C
RS庫存編號 169-8918
製造零件編號BU9873F-GTE2
BrandROHM
TWD13.10
個 (在毎卷:2500)
單位
Real Time Clock YY:MM:DD:dd HH:MM:SS - Serial-I2C Surface Mount SOP 8 5.35 x 4.4 x 1.5mm 5.35mm 4.4mm 1.5mm 5.5 V +85 °C
RS庫存編號 169-8920
製造零件編號BU9873FVM-GTTR
BrandROHM
TWD13.10
個 (在毎卷:3000)
單位
Real Time Clock YY:MM:DD:dd HH:MM:SS - Serial-I2C Surface Mount MSOP 8 3.25 x 2.8 x 0.75mm 3.25mm 2.8mm 0.75mm 5.5 V +85 °C
RS庫存編號 178-0558
製造零件編號BU9873NUX-TTR
BrandROHM
TWD27.40
/個 (每包:10個)
單位
Real Time Clock - HH:MM:SS - Serial-I2C Surface Mount VSON008X2030 8 2 x 3 x 0.58mm 2mm 3mm 0.85mm 5.5 V +85 °C
RS庫存編號 177-9886
製造零件編號BU9873NUX-TTR
BrandROHM
TWD13.10
個 (在毎卷:4000)
單位
Real Time Clock - HH:MM:SS - Serial-I2C Surface Mount VSON008X2030 8 2 x 3 x 0.58mm 2mm 3mm 0.85mm 5.5 V +85 °C
RS庫存編號 169-8919
製造零件編號BU9873FJ-GTE2
BrandROHM
TWD13.10
個 (在毎卷:2500)
單位
Real Time Clock YY:MM:DD:dd HH:MM:SS - Serial-I2C Surface Mount SOP 8 5.25 x 3.9 x 1.37mm 5.25mm 3.9mm 1.37mm 5.5 V +85 °C
RS庫存編號 169-9339
製造零件編號BU9873F-GTE2
BrandROHM
TWD27.40
/個 (每包:10個)
單位
Real Time Clock YY:MM:DD:dd HH:MM:SS - Serial-I2C Surface Mount SOP 8 5.35 x 4.4 x 1.5mm 5.35mm 4.4mm 1.5mm 5.5 V +85 °C