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 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 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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กำลังดูสินค้า 61 - 80 รายการจาก 431 รายการ / Viewing 61 - 80 of 431 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. 803-2187
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.MCP79521-I/MS
Brand :Microchip
THB40.138
Each: (In a Pack of 5)
Units
Calendar DW:M:Y:LY HH:MM:SS:HSS 64B Serial Surface Mount MSOP 10 3 x 3 x 0.95mm 3mm 3mm 0.95mm 3.6 V +85 °C
RS Stock No. 145-9302
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.M41T0M6F
THB27.724
Each (On a Reel of 2500)
Units
Real Time Clock DW:DM:M:Y HH:MM:SS 8B 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. 190-5777
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.DS1338Z-33+T&R
THB108.364
Each: (In a Pack of 5)
Units
NV RAM, Real Time Clock DM:M:DW:Y SS:MM:HH - Serial-I2C Surface Mount μSOP 8 5 x 4 x 1.5mm 5mm 4mm 1.5mm 5.5 V +85 °C
RS Stock No. 729-3215
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.RV-3029-C2-TA-006
Brand :Micro Crystal
THB463.29
Each
Units
Battery Backup, Calendar, RAM DW:DM:M:Y HH:MM:SS 8B 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. 165-5508
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.M41T94MH6F
THB96.90
Each (On a Reel of 936)
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 SOH 28 18.49 x 8.89 x 2.69mm 18.49mm 8.89mm 2.69mm 5.5 V +85 °C
RS Stock No. 169-8296
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.ISL1208IB8Z
Brand :Intersil
THB53.938
Each (In a Tube of 100)
Units
Alarm, Battery Backup, Calendar DW:DM:M:Y HH:MM:SS 2B Serial-I2C Surface Mount SOIC 8 5 x 4 x 1.5mm 5mm 4mm 1.5mm 5.5 V +85 °C
RS Stock No. 817-3654
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.MCP79410T-I/MS
Brand :Microchip
THB25.867
Each (On a Reel of 2500)
Units
Alarm, Battery Backup, Calendar, Clock DW:D:M:Y HH:MM:SS 64B Serial-2 Wire, Serial-I2C Surface Mount MSOP 8 3 x 3 x 0.95mm 3mm 3mm 0.95mm 5.5 V +85 °C
RS Stock No. 813-5775
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.RV-3029-C3-TB-QA-Opt.B
Brand :Micro Crystal
THB233.01
Each
Units
Alarm, Battery Backup, Calendar, Clock D:W:M:Y HH:MM:SS 8B Serial-2 Wire, Serial-I2C Surface Mount SON 10 3.7 x 2.5 x 0.9mm 3.7mm 2.5mm 0.9mm 5.5 V +85 °C
RS Stock No. 171-0197
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.AB1815-T3
Brand :Abracon
THB26.683
Each (On a Reel of 3000)
Units
- - - - - Surface Mount 16-VFQFN - - - - - - 85 °C
RS Stock No. 169-8140
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.Q41457451000200
Brand :EPSON
THB99.057
Each (On a Reel of 250)
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. 188-9354
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.M41T82RM6F
THB78.40
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. 189-8356
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.DS3232MZ+
THB246.17
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. 191-3690
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.DS1337U+T&R
THB84.212
Each: (In a Pack of 5)
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. 923-7494
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.DS1302Z+T&R
THB52.548
Each (On a Reel of 2500)
Units
Battery Backup, Calendar, NV RAM YY:MM:DD HH:MM:SS 31B Serial-3 Wire Surface Mount SOIC 8 5 x 4 x 1.5mm 5mm 4mm 1.5mm 5.5 V +70 °C
RS Stock No. 667-6221
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.Q42724231000611
Brand :EPSON
THB263.69
Each
Units
Calendar, Timer - - - Serial-I2C Surface Mount SOP 24 16.3 x 7.9 x 2.8mm 16.3mm 7.9mm 2.8mm 5.5 V +85 °C
RS Stock No. 190-4732
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.DS1338Z-33+T&R
THB52.952
Each (On a Reel of 2500)
Units
NV RAM, Real Time Clock DM:M:DW:Y SS:MM:HH - Serial-I2C Surface Mount μSOP 8 5 x 4 x 1.5mm 5mm 4mm 1.5mm 5.5 V +85 °C
RS Stock No. 192-1551
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.DS1744W-120+
THB832.89
Each
Units
Calendar YY:MM:DD HH:MM:SS 32 x 8B Parallel Through Hole EDIP 28 39.37 x 18.8 x 10.67mm 39.37mm 18.8mm 10.67mm 0.6 V, 3.6 V +70 °C
RS Stock No. 189-8457
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.DS1307+
THB123.236
Each: (In a Pack of 5)
Units
Alarm, Battery Backup, Calendar, Power Fail DW:DM:M:Y HH:MM:SS 56B Serial-I2C Through Hole PDIP 8 9.91 x 7.87 x 4.45mm 9.91mm 7.87mm 4.45mm 5.5 V +70 °C
RS Stock No. 817-3658
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.MCP79410T-I/SN
Brand :Microchip
THB24.776
Each (On a Reel of 3300)
Units
Alarm, Battery Backup, Calendar, Clock DW:D:M:Y HH:MM:SS 64B Serial-2 Wire, Serial-I2C Surface Mount SOIC 8 4.9 x 3.9 x 1.5mm 4.9mm 3.9mm 1.5mm 5.5 V +85 °C
RS Stock No. 923-1499
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.ISL12020MIRZ
THB167.481
Each (In a Tube of 53)
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
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