Real Time Clocks

Manufacturer Series Package/Case Packaging Product Status Programmable Type Features Memory Size Time Format Date Format Interface Voltage - Supply Voltage - Supply, Battery Current - Timekeeping (Max) Operating Temperature Mounting Type Grade Qualification Supplier Device Package























































































































































































































































































































































































































































































































































































































































































































































































































































































































































































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Photo Mfr. Part # Availability Price Quantity Datasheet Series Package/Case Packaging Product Status Programmable Type Features Memory Size Time Format Date Format Interface Voltage - Supply Voltage - Supply, Battery Current - Timekeeping (Max) Operating Temperature Mounting Type Grade Qualification Supplier Device Package
MCP79512T-I/MN Microchip Technology

MCP79512T-I/MN

IC RTC CLK/CALENDAR SPI 10TDFN

Microchip Technology

3,078
RFQ

-

- 10-WFDFN Exposed Pad Tape & Reel (TR) Active Not Verified Clock/Calendar Alarm, EEPROM, Leap Year, Square Wave Output, SRAM, Unique ID 64B HH:MM:SS:hh (12/24 hr) YY-MM-DD-dd SPI 1.8V ~ 3.6V 1.3V ~ 3.6V 1µA @ 1.8V ~ 3.6V -40°C ~ 85°C Surface Mount - - 10-TDFN (3x3)
MCP79512T-I/MS Microchip Technology

MCP79512T-I/MS

IC RTC CLK/CALENDAR SPI 10MSOP

Microchip Technology

3,626
RFQ

-

- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width) Tape & Reel (TR) Active Not Verified Clock/Calendar Alarm, EEPROM, Leap Year, Square Wave Output, SRAM, Unique ID 64B HH:MM:SS:hh (12/24 hr) YY-MM-DD-dd SPI 1.8V ~ 3.6V 1.3V ~ 3.6V 1µA @ 1.8V ~ 3.6V -40°C ~ 85°C Surface Mount - - 10-MSOP
MCP79520T-I/MN Microchip Technology

MCP79520T-I/MN

IC RTC CLK/CALENDAR SPI 10TDFN

Microchip Technology

3,897
RFQ

-

- 10-WFDFN Exposed Pad Tape & Reel (TR) Active Not Verified Clock/Calendar Alarm, EEPROM, Leap Year, Square Wave Output, SRAM, Unique ID 64B HH:MM:SS:hh (12/24 hr) YY-MM-DD-dd SPI 1.8V ~ 3.6V 1.3V ~ 3.6V 1µA @ 1.8V ~ 3.6V -40°C ~ 85°C Surface Mount - - 10-TDFN (3x3)
M41T0DS6F STMicroelectronics

M41T0DS6F

IC RTC CLK/CALENDAR I2C 8-TSSOP

STMicroelectronics

3,606
RFQ
M41T0DS6F Datasheet

Datasheet

- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) Tape & Reel (TR) Obsolete Not Verified Clock/Calendar - - HH:MM:SS YY-MM-DD-dd I2C, 2-Wire Serial 2V ~ 5.5V - 1.2µA ~ 31µA @ 3V ~ 5.5V -40°C ~ 85°C Surface Mount - - -
EM3027IDSSO8A+ EM Microelectronic

EM3027IDSSO8A+

LINEAR IC

EM Microelectronic

1,338
RFQ

-

- 8-SOIC (0.154", 3.90mm Width) Tube Last Time Buy - Clock/Calendar Alarm, EEPROM, Leap Year, RAM, Trickle-Charger 8B HH:MM:SS (12/24 hr) YY-MM-DD-dd I2C 1.4V ~ 5.5V 1.4V ~ 5.5V 4.6µA ~ 5.5µA @ 1.4V ~ 5V -40°C ~ 85°C (TA) Surface Mount - - 8-SOIC
DS1337S Analog Devices Inc./Maxim Integrated

DS1337S

IC RTC CLK/CALENDAR I2C 8SOIC

Analog Devices Inc./Maxim Integrated

2,876
RFQ
DS1337S Datasheet

Datasheet

- 8-SOIC (0.154", 3.90mm Width) Tube Obsolete Not Verified Clock/Calendar Alarm, Leap Year, Square Wave Output - HH:MM:SS (12/24 hr) YY-MM-DD-dd I2C, 2-Wire Serial 1.8V ~ 5.5V - 0.6µA @ 1.3V ~ 1.8V -40°C ~ 85°C Surface Mount - - 8-SOIC
M41T0DS6E STMicroelectronics

M41T0DS6E

IC RTC CLOCK/CALENDAR I2C

STMicroelectronics

1,364
RFQ
M41T0DS6E Datasheet

Datasheet

- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) Tube Obsolete Not Verified Clock/Calendar - - HH:MM:SS YY-MM-DD-dd I2C, 2-Wire Serial 2V ~ 5.5V - 1.2µA ~ 31µA @ 3V ~ 5.5V -40°C ~ 85°C Surface Mount - - -
ISL1208IB8Z-TKR5291 Renesas Electronics Corporation

ISL1208IB8Z-TKR5291

IC RTC CLK/CALENDAR I2C 8SOIC

Renesas Electronics Corporation

1,194
RFQ
ISL1208IB8Z-TKR5291 Datasheet

Datasheet

- 8-SOIC (0.154", 3.90mm Width) Tape & Reel (TR) Obsolete Not Verified Clock/Calendar Alarm, Leap Year, SRAM 2B HH:MM:SS (12/24 hr) YY-MM-DD-dd I2C, 2-Wire Serial 2.7V ~ 5.5V 1.8V ~ 5.5V 4µA ~ 6µA @ 3V ~ 5V -40°C ~ 85°C Surface Mount - - 8-SOIC
DS2417P Analog Devices Inc./Maxim Integrated

DS2417P

IC RTC BINARY CNTR 1-WIRE 6TSOC

Analog Devices Inc./Maxim Integrated

4,877
RFQ
DS2417P Datasheet

Datasheet

- 6-SMD, J-Lead Tube Obsolete Not Verified Binary Counter Unique ID - Binary Binary 1-Wire® Serial 2.5V ~ 5.5V - 0.45µA @ 2.5V ~ 5.5V -40°C ~ 85°C Surface Mount - - 6-TSOC
MCP79521T-I/MN Microchip Technology

MCP79521T-I/MN

IC RTC CLK/CALENDAR SPI 10TDFN

Microchip Technology

3,805
RFQ

-

- 10-WFDFN Exposed Pad Tape & Reel (TR) Active Not Verified Clock/Calendar Alarm, EEPROM, Leap Year, Square Wave Output, SRAM, Unique ID 64B HH:MM:SS:hh (12/24 hr) YY-MM-DD-dd SPI 1.8V ~ 3.6V 1.3V ~ 3.6V 1µA @ 1.8V ~ 3.6V -40°C ~ 85°C Surface Mount - - 10-TDFN (3x3)
MCP79522T-I/MN Microchip Technology

MCP79522T-I/MN

IC RTC CLK/CALENDAR SPI 10TDFN

Microchip Technology

3,396
RFQ

-

- 10-WFDFN Exposed Pad Tape & Reel (TR) Active Not Verified Clock/Calendar Alarm, EEPROM, Leap Year, Square Wave Output, SRAM, Unique ID 64B HH:MM:SS:hh (12/24 hr) YY-MM-DD-dd SPI 1.8V ~ 3.6V 1.3V ~ 3.6V 1µA @ 1.8V ~ 3.6V -40°C ~ 85°C Surface Mount - - 10-TDFN (3x3)
MCP79522T-I/MS Microchip Technology

MCP79522T-I/MS

IC RTC CLK/CALENDAR SPI 10MSOP

Microchip Technology

4,563
RFQ

-

- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width) Tape & Reel (TR) Active Not Verified Clock/Calendar Alarm, EEPROM, Leap Year, Square Wave Output, SRAM, Unique ID 64B HH:MM:SS:hh (12/24 hr) YY-MM-DD-dd SPI 1.8V ~ 3.6V 1.3V ~ 3.6V 1µA @ 1.8V ~ 3.6V -40°C ~ 85°C Surface Mount - - 10-MSOP
DS2415P/T&R Analog Devices Inc./Maxim Integrated

DS2415P/T&R

IC RTC REAL TIME CLK 1WIRE 6TSOC

Analog Devices Inc./Maxim Integrated

3,629
RFQ
DS2415P/T&R Datasheet

Datasheet

- 6-SMD, J-Lead Tape & Reel (TR) Obsolete Not Verified Real Time Clock (RTC) - - Binary Binary 1-Wire® Serial 3V, 3.3V, 5V - - -40°C ~ 85°C Surface Mount - - 6-TSOC
PCF8583T/5,512 NXP USA Inc.

PCF8583T/5,512

IC RTC CLOCK/CALENDAR I2C 8SO

NXP USA Inc.

3,456
RFQ
PCF8583T/5,512 Datasheet

Datasheet

- 8-SOIC (0.295", 7.50mm Width) Tube Obsolete Not Verified Clock/Calendar Alarm, NVSRAM, Square Wave Output 240B HH:MM:SS:hh (12/24 hr) YY-MM-DD I2C, 2-Wire Serial 2.5V ~ 6V - 10µA ~ 50µA @ 1V ~ 5V -40°C ~ 85°C Surface Mount - - 8-SO
DS1672S-3/T&R Analog Devices Inc./Maxim Integrated

DS1672S-3/T&R

IC RTC BINARY COUNTER I2C 8SOIC

Analog Devices Inc./Maxim Integrated

1,394
RFQ
DS1672S-3/T&R Datasheet

Datasheet

- 8-SOIC (0.154", 3.90mm Width) Tape & Reel (TR) Obsolete Not Verified Binary Counter Trickle-Charger - Binary Binary I2C, 2-Wire Serial 2.7V ~ 3.3V 1.3V ~ 3.63V 500µA @ 3.3V -40°C ~ 85°C Surface Mount - - 8-SOIC
RV-4162-C7-32.768KHZ-20PPM-TA-QA Micro Crystal AG

RV-4162-C7-32.768KHZ-20PPM-TA-QA

IC RTC CLK/CALENDAR I2C 8SON

Micro Crystal AG

3,602
RFQ
RV-4162-C7-32.768KHZ-20PPM-TA-QA Datasheet

Datasheet

C7 8-WCDFN Tape & Reel (TR) Active Not Verified Clock/Calendar Alarm, Leap Year, Programmable Clock Output, Watchdog Timer - HH:MM:SS:hh (24 hr) YY-MM-DD-dd I2C, 2-Wire Serial 1V ~ 4.4V - 0.5µA @ 3V -40°C ~ 85°C (TA) Surface Mount Automotive AEC-Q200 8-SON (3.2x1.5)
MAX31331TETB+T Analog Devices Inc./Maxim Integrated

MAX31331TETB+T

ULTRA-LOW POWER 12C REAL TIME CL

Analog Devices Inc./Maxim Integrated

4,830
RFQ
MAX31331TETB+T Datasheet

Datasheet

- 10-WFDFN Exposed Pad Tape & Reel (TR) Active - Clock/Calendar Alarm, Leap Year, RAM, Square Wave Output, Trickle Charger 32B HH:MM:SS (12/24 hr) YY-MM-DD I2C 1.1V ~ 5.5V 1.1V ~ 5.5V 0.65µA ~ 0.7µA @ 1.1V ~ 5.5V -40°C ~ 85°C (TA) Surface Mount - - 10-TDFN (3x3)
1337AGDVGI8 Renesas Electronics Corporation

1337AGDVGI8

IC RTC CLK/CALENDAR I2C 8TSSOP

Renesas Electronics Corporation

4,343
RFQ
1337AGDVGI8 Datasheet

Datasheet

- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) Tape & Reel (TR) Active Not Verified Clock/Calendar Alarm, Leap Year, Square Wave Output - HH:MM:SS (12/24 hr) YY-MM-DD-dd I2C, 2-Wire Serial 1.8V ~ 5.5V - 0.3µA @ 1.3V ~ 1.8V -40°C ~ 85°C Surface Mount - - 8-TSSOP
RV-4162-C7-32.768KHZ-10PPM-TA-QC Micro Crystal AG

RV-4162-C7-32.768KHZ-10PPM-TA-QC

IC RTC CLK/CALENDAR I2C 8SON

Micro Crystal AG

2,227
RFQ
RV-4162-C7-32.768KHZ-10PPM-TA-QC Datasheet

Datasheet

C7 8-WCDFN Tape & Reel (TR) Active Not Verified Clock/Calendar Alarm, Leap Year, Programmable Clock Output, Watchdog Timer - HH:MM:SS:hh (24 hr) YY-MM-DD-dd I2C, 2-Wire Serial 1V ~ 4.4V - 0.5µA @ 3V -40°C ~ 85°C (TA) Surface Mount - - 8-SON (3.2x1.5)
PCF85263ATT1/AJ NXP USA Inc.

PCF85263ATT1/AJ

IC RTC CLK/CALENDAR I2C 10TSSOP

NXP USA Inc.

1,108
RFQ
PCF85263ATT1/AJ Datasheet

Datasheet

- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width) Tape & Reel (TR) Obsolete Not Verified Clock/Calendar Alarm, Leap Year, Watchdog Timer - HH:MM:SS:hh (12/24 hr) YY-MM-DD-dd I2C, 2-Wire Serial 0.9V ~ 5.5V 0.9V ~ 5.5V 0.885µA @ 3.3V -40°C ~ 85°C Surface Mount - - 10-TSSOP
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Real Time Clocks Electronic Components Sourcing and Lifecycle Support

FPGAX is a global sourcing partner specializing in FPGA and programmable logic solutions for engineering and manufacturing organizations worldwide. For customers sourcing Real Time Clocks components, we support both current production requirements and long-term component availability across demanding product lifecycles.

Our sourcing approach combines traceability, supply stability, and technical coordination. FPGAX is certified to AS9120B, ISO 9001:2008, and ISO 14001 standards and supports procurement programs where continuity, documentation, and dependable component supply are important.

How FPGAX Supports Real Time Clocks Requirements

  • Active component sourcing: support for current FPGA, programmable logic, and related semiconductor requirements.
  • End-of-life sourcing: assistance with obsolete and hard-to-find parts when designs must remain in production.
  • Lifecycle management: sourcing support during product transitions, allocation periods, and supply interruptions.
  • Design continuity: long-term supply support intended to reduce redesign pressure and production disruption.
  • Major programmable logic brands: sourcing coverage includes Xilinx, Intel/Altera, Lattice, Microchip, and QuickLogic.

Supply Support at a Glance

Requirement FPGAX Support
Current production Active FPGA, programmable logic, and semiconductor component sourcing
Legacy programs End-of-life and hard-to-find component sourcing
Supply continuity Lifecycle transition and long-term availability support
Quality requirements Traceable sourcing and quality-management processes

Focused on FPGA and Programmable Logic Supply

FPGAX focuses on helping customers maintain access to critical programmable devices throughout the full component lifecycle. Whether the requirement is for a current design, an established production program, or an older platform facing component obsolescence, our goal is to provide a stable sourcing path and help customers maintain design and manufacturing continuity.

Real Time Clocks FAQ

Can FPGAX source both active and end-of-life Real Time Clocks components?

Yes. FPGAX supports sourcing for both active components and end-of-life or hard-to-find parts, with an emphasis on maintaining supply continuity for engineering and manufacturing programs.

Which programmable logic manufacturers does FPGAX support?

Our core sourcing coverage includes major FPGA and programmable logic manufacturers such as Xilinx, Intel/Altera, Lattice, Microchip, and QuickLogic, subject to specific part requirements and availability.

How does FPGAX help with component lifecycle changes?

We support customers through lifecycle transitions by helping locate current or legacy supply, reducing exposure to supply disruptions, and supporting long-term availability for designs that need to remain in production.

What quality and traceability standards does FPGAX follow?

FPGAX states certification to AS9120B, ISO 9001:2008, and ISO 14001 standards. Our sourcing services are structured around traceability, stable supply, and quality-management requirements.

What information should I provide for a Real Time Clocks sourcing request?

Providing the manufacturer part number, required quantity, target delivery schedule, and any lifecycle or traceability requirements helps us evaluate the sourcing request more efficiently.