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 21 - 40 รายการจาก 433 รายการ / Viewing 21 - 40 of 433 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. 191-3543
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.DS3231M+
THB256.33
Each
Units
Real Time Clock D:D:M:Y SS:MM:HH - Serial-I2C Surface Mount SO 16 10.5 x 7.6 x 2.35mm 10.5mm 7.6mm 2.35mm 5.5 V +85 °C
RS Stock No. 667-6243
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.Q41457451000200
Brand :EPSON
THB96.25
Each
Units
Alarm, Calendar, Timer - - - Serial Surface Mount SOP 14 5 x 10.1 x 3.2mm 5mm 10.1mm 3.2mm 5.5 V +85 °C
RS Stock No. 168-6880
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.M41T11MH6F
THB118.535
Each (On a Reel of 936)
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. 171-1645
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.RV-8564-C3-TA-020
Brand :Micro Crystal
THB135.487
Each (On a Tape of 100)
Units
Alarm, Interrupt, Timer - - - Serial-I2C Surface Mount SON 10 - 3.7mm 3.7mm 2.5mm 5.5 V +85 °C
RS Stock No. 189-7198
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.DS1302N+
THB106.355
Each (In a Tube of 50)
Units
Trickle Charger DM:M:DW:Y SS:MM:HH 31B Serial-3 Wire Through Hole PDIP 8 9.91 x 7.87 x 4.45mm 9.91mm 7.87mm 4.45mm 5.5 V +85 °C
RS Stock No. 165-9387
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.DS1338C-33#
THB168.482
Each (In a Tube of 46)
Units
Clock M:M:DW SS:MM:HH 56B Serial-I2C Surface Mount SOIC 16 18.1 x 7.6 x 2.35mm 18.1mm 7.6mm 2.35mm 5.5 V +85 °C
RS Stock No. 192-1541
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.DS1338Z-18+
THB126.58
Each: (In a Pack of 2)
Units
Calendar YY:MM:DD HH:MM:SS 56B Serial-2 Wire, Serial-I2C Surface Mount SOIC 8 5 x 4 x 1.5mm 5mm 4mm 1.5mm 5.5 V +85 °C
RS Stock No. 169-8293
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.ISL12026IBZ
Brand :Intersil
THB94.632
Each (In a Tube of 98)
Units
Alarm, Battery Backup, Calendar, Switch Over DW:DM:M:Y HH:MM:SS 512B Serial-I2C Surface Mount SOIC 8 5 x 4 x 1.5mm 5mm 4mm 1.5mm 5.5 V +85 °C
RS Stock No. 190-4742
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.DS1390U-33+T&R
THB64.802
Each (On a Reel of 3000)
Units
Trickle Charger D:D:M:Y - - Serial-SPI Surface Mount μSOP 10 3.16 x 3.12 x 0.95mm 3.16mm 3.12mm 0.95mm 5.5 V +85 °C
RS Stock No. 729-3375
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.RV-8564-C2-TA-020
Brand :Micro Crystal
THB192.47
Each
Units
Calendar DW:DM:M:Y HH:MM:SS - Serial-I2C Surface Mount SON 10 5 x 3.2 x 1.2mm 5mm 3.2mm 1.2mm 5.5 V +85 °C
RS Stock No. 921-5721
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.ISL12020MIRZ
THB188.54
Each: (In a Pack of 2)
Units
Alarm, Battery Backup, Calendar, Switch Over DW:DM:M:Y HH:MM:SS 128B Serial-I2C Surface Mount DFN 20 5.5 x 4 x 1.3mm 5.5mm 4mm 1.3mm 5.5 V +85 °C
RS Stock No. 189-8329
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.DS1391U-33+
THB112.318
Each: (In a Pack of 5)
Units
Battery Backup, Calendar, NV SRAM DW:DM:M:Y HH:MM:SS - Serial-SPI Surface Mount μSOP 10 3.05 x 3.05 x 0.95mm 3.05mm 3.05mm 0.95mm 5.5 V +85 °C
RS Stock No. 189-8356
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.DS3232MZ+
THB254.45
Each
Units
Calendar DD:M:Y SS:MM:HH 236B Serial-I2C Surface Mount SOIC 8 5 x 4 x 1.5mm 5mm 4mm 1.5mm 4.5 V +85 °C
RS Stock No. 191-3504
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.DS1339AU+
THB108.865
Each: (In a Pack of 2)
Units
Real Time Clock D:D:M:Y SS:MM:HH - Serial-I2C Surface Mount μSOP 8 3.1 x 0.65 x 0.95mm 3.1mm 0.65mm 0.95mm 5.5 V +85 °C
RS Stock No. 190-1838
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.DS12C887+
THB333.28
Each
Units
Alarm Binary, DW:DM:M:Y Binary, HH:MM:SS 113B Multiplexed Through Hole EDIP 24 34.04 x 18.29 x 9.4mm 34.04mm 18.29mm 9.4mm 5.5 V +70 °C
RS Stock No. 188-9354
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.M41T82RM6F
THB82.20
Each
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. 189-8655
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.DS1305E+
THB175.695
Each: (In a Pack of 2)
Units
Alarm, Calendar DW:DM:M:Y HH:MM:SS 96B Serial-SPI Surface Mount TSSOP 20 6.5 x 4.4 x 0.9mm 6.5mm 4.4mm 0.9mm 5.5 V +70 °C
RS Stock No. 165-5488
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.M41T93RMY6F
THB91.392
Each (On a Reel of 1000)
Units
Real Time Clock DW:DM:M:Y HH:MM:SS:hh 32B Serial-4 Wire, Serial-I2C Surface Mount SOX 18 11.66 x 7.67 x 2.39mm 11.66mm 7.67mm 2.39mm 5.5 V +85 °C
RS Stock No. 786-0758
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.DS1338C-33#
THB161.22
Each
Units
Clock M:M:DW SS:MM:HH 56B Serial-I2C Surface Mount SOIC 16 18.1 x 7.6 x 2.35mm 18.1mm 7.6mm 2.35mm 5.5 V +85 °C
RS Stock No. 205-3461
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.X1B000371000212
Brand :Epson
THB95.655
Each: (In a Pack of 2)
Units
Real Time Clock - - - - - 3.2x2.5 ceramic package 10 - - - - - -