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, an RTC will also include a calendar and an alarm

How 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 facilitates the performance of the software functions that are time dependant.

Designed to run on ultra-low power consumption, RTCs often run on a lithium battery source but can also run on 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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กำลังดูสินค้า 1 - 20 รายการจาก 54 รายการ / Viewing 1 - 20 of 54 products
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รายละเอียดสินค้า / Description ราคา / 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 Stock No. 919-6337
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.M48T18-100PC1
THB617.077
Each (In a Tube of 12)
Units
Battery Backup, Calendar, Chip Deselect, Switch Over, Write Protection DW:DM:M:Y HH:MM:SS 8192B Parallel Through Hole PCDIP 28 39.88 x 18.34 x 8.89mm 39.88mm 18.34mm 8.89mm 5.5 V +70 °C
RS Stock No. 578-831
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.M41T65Q6F
THB56.77
Each: (In a Pack of 5)
Units
Alarm, Battery Backup, Calendar, Watchdog Timer DW:DM:M:Y HH:MM:SS:hh 16B Serial-I2C Surface Mount QFN 16 3 x 3 x 0.88mm 3mm 3mm 0.88mm 4.4 V +85 °C
RS Stock No. 714-7298
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.M48T18-100PC1
THB671.58
Each
Units
Battery Backup, Calendar, Chip Deselect, Switch Over, Write Protection DW:DM:M:Y HH:MM:SS 8192B Parallel Through Hole PCDIP 28 39.88 x 18.34 x 8.89mm 39.88mm 18.34mm 8.89mm 5.5 V +70 °C
RS Stock No. 166-0790
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.M41T65Q6F
THB39.47
Each (On a Reel of 3000)
Units
Alarm, Battery Backup, Calendar, Watchdog Timer DW:DM:M:Y HH:MM:SS:hh 16B Serial-I2C Surface Mount QFN 16 3 x 3 x 0.88mm 3mm 3mm 0.88mm 4.4 V +85 °C
RS Stock No. 168-6813
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.M41T00SM6F
THB53.643
Each (On a Reel of 2500)
Units
- DW:DM:M:Y HH:MM:SS 8B Serial-2 Wire, Serial-I2C Surface Mount SOIC 8 5 x 4 x 1.25mm 5mm 4mm 1.25mm 5.5 V +85 °C
RS Stock No. 907-4732
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.M41ST87WMX6TR
THB219.62
Each: (In a Pack of 2)
Units
Calendar, Clock DD:MM:YY HH:MM:SS 128B Serial-I2C Surface Mount SOX 28 18.01 x 7.67 x 2.38mm 18.01mm 7.67mm 2.38mm 3.6 V +85 °C
RS Stock No. 714-7285
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.M41T11MH6F
THB149.70
Each
Units
Calendar, Chip Deselect, Switch Over DW:DM:M:Y HH:MM:SS 64B Serial-I2C Surface Mount SOH 28 18.49 x 8.89 x 2.69mm 18.49mm 8.89mm 2.69mm 5.5 V +85 °C
RS Stock No. 188-9206
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.M41T82RM6F
THB42.212
Each (On a Reel of 2500)
Units
Alarm, Battery Backup, Calendar, Watchdog Timer Binary, D:D:M:Y:C - 32bit Serial-2 Wire, Serial-I2C Surface Mount SO 8 5 x 4 x 1.5mm 5mm 4mm 1.5mm 5.5 V +85 °C
RS Stock No. 829-0355
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.M41T81SM6F
THB78.476
Each: (In a Pack of 5)
Units
Calendar D:D:M:Y:C HH:MM:SS:HSS 20B Serial-I2C Surface Mount SOIC 8 5 x 4 x 1.5mm 5mm 4mm 1.5mm 5.5 V +85 °C
RS Stock No. 102-3553
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.M41T81M6F
THB52.302
Each (On a Reel of 2500)
Units
Alarm Binary HH:MM:SS:hh 20B Serial Surface Mount SOIC 8 5 x 4 x 1.25mm 5mm 4mm 1.25mm 5.5 V +85 °C
RS Stock No. 165-5486
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.M41T83SQA6F
THB64.36
Each (On a Reel of 1000)
Units
Real Time Clock DW:DM:M:Y HH:MM:SS:hh 32B Serial-2 Wire, Serial-I2C Surface Mount QFN 16 4.1 x 4.1 x 0.95mm 4.1mm 4.1mm 0.95mm 5.5 V +85 °C
RS Stock No. 920-9133
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.M41T81SM6F
THB48.843
Each (On a Reel of 2500)
Units
Calendar D:D:M:Y:C HH:MM:SS:HSS 20B Serial-I2C Surface Mount SOIC 8 5 x 4 x 1.5mm 5mm 4mm 1.5mm 5.5 V +85 °C
RS Stock No. 168-8017
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.M48T12-70PC1
THB465.906
Each (In a Tube of 14)
Units
Timekeeper SRAM D:M:Y HH:MM:SS 16kbit - Through Hole PCDIP 24 34.8 x 18.34 x 8.89mm 34.8mm 18.34mm 8.89mm 5.5 V +70 °C
RS Stock No. 165-5309
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.M41T94MQ6F
THB86.958
Each (On a Reel of 2500)
Units
Alarm, Battery Backup, Interrupt, NVRAM, Real Time Clock, Watchdog Timer Binary, D:D:M:Y:C Binary, HH:MM:SS 44B Serial-SPI Surface Mount SOIC 16 10 x 4 x 1.6mm 10mm 4mm 1.6mm 5.5 V +85 °C
RS Stock No. 877-2781
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.M41T83SQA6F
THB85.452
Each: (In a Pack of 5)
Units
Real Time Clock DW:DM:M:Y HH:MM:SS:hh 32B Serial-2 Wire, Serial-I2C Surface Mount QFN 16 4.1 x 4.1 x 0.95mm 4.1mm 4.1mm 0.95mm 5.5 V +85 °C
RS Stock No. 686-5030
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.M48T58Y-70PC1
THB613.82
Each
Units
Battery Backup, Calendar, Chip Deselect, Switch Over, Write Protection DW:DM:M:Y HH:MM:SS 8192B Parallel Through Hole PCDIP 28 39.88 x 18.34 x 8.89mm 39.88mm 18.34mm 8.89mm 5.5 V +70 °C
RS Stock No. 165-8028
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.M41ST87WMX6TR
THB171.508
Each (On a Reel of 1000)
Units
Calendar, Clock DD:MM:YY HH:MM:SS 128B Serial-I2C Surface Mount SOX 28 18.01 x 7.67 x 2.38mm 18.01mm 7.67mm 2.38mm 3.6 V +85 °C
RS Stock No. 880-5342
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.M41T62LC6F
THB112.95
Each: (In a Pack of 5)
Units
Alarm, Calendar, Real Time Clock, Square Wave Output, Watchdog Timer Binary, D:D:M:Y:C Binary, HH:MM:SS 16B Serial Surface Mount CLCC 8 3.3 x 1.6 x 0.8mm 3.3mm 1.6mm 0.8mm 4.4 V +85 °C
RS Stock No. 920-9124
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.M41T11M6F
THB68.324
Each (On a Reel of 2500)
Units
Calendar D:D:M:Y:C HH:MM:SS 56B Serial-I2C Surface Mount SOIC 8 5 x 4 x 1.5mm 5mm 4mm 1.5mm 5.5 V +85 °C
RS Stock No. 686-5036
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.M48T58-70PC1
THB584.59
Each
Units
Battery Backup, Calendar, Chip Deselect, Switch Over, Write Protection DW:DM:M:Y HH:MM:SS 8192B Parallel Through Hole PCDIP 28 39.88 x 18.34 x 8.89mm 39.88mm 18.34mm 8.89mm 5.5 V +70 °C