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
1337DCGI8 Renesas Electronics Corporation

1337DCGI8

IC RTC CLK/CALENDAR I2C 8SOIC

Renesas Electronics Corporation

3,227
RFQ
1337DCGI8 Datasheet

Datasheet

- 8-SOIC (0.154", 3.90mm Width) Tape & Reel (TR) 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
RX8900SA:UC0 PURE SN EPSON

RX8900SA:UC0 PURE SN

IC RTC CLK/CALENDAR I2C 14SOP

EPSON

1,719
RFQ
RX8900SA:UC0 PURE SN Datasheet

Datasheet

RX8900SA 14-SOIC (0.197", 5.00mm Width) Tape & Reel (TR) Active Not Verified Clock/Calendar Alarm - HH:MM:SS (24 hr) YY-MM-DD-dd I2C 2.5V ~ 5.5V 1.6V ~ 5.5V 1.4µA ~ 1.5µA @ 3V ~ 5V -40°C ~ 85°C Surface Mount - - 14-SOP
M41T00M6E STMicroelectronics

M41T00M6E

IC RTC CLK/CALENDAR I2C 8SOIC

STMicroelectronics

1,912
RFQ
M41T00M6E Datasheet

Datasheet

- 8-SOIC (0.154", 3.90mm Width) Tube Obsolete Not Verified Clock/Calendar Leap Year - HH:MM:SS YY-MM-DD-dd I2C, 2-Wire Serial 2V ~ 5.5V 2.5V ~ 3.5V 70µA @ 2V ~ 5.5V -40°C ~ 85°C Surface Mount - - 8-SOIC
M41T00SM6E STMicroelectronics

M41T00SM6E

IC RTC CLK/CALENDAR I2C 8SOIC

STMicroelectronics

3,407
RFQ
M41T00SM6E Datasheet

Datasheet

- 8-SOIC (0.154", 3.90mm Width) Tube Obsolete Not Verified Clock/Calendar Leap Year - HH:MM:SS (24 hr) YY-MM-DD-dd I2C, 2-Wire Serial 2.7V ~ 5.5V 2V ~ 3.5V 70µA @ 2.7V ~ 5.5V -40°C ~ 85°C Surface Mount - - 8-SOIC
V3021SO8A+ EM Microelectronic

V3021SO8A+

IC RTC CLK/CALENDAR SER 8SOIC

EM Microelectronic

2,297
RFQ
V3021SO8A+ Datasheet

Datasheet

- 8-SOIC (0.154", 3.90mm Width) Tube Last Time Buy Not Verified Clock/Calendar Alarm, Leap Year, RAM 1B HH:MM:SS:hh (12/24 hr) YY-MM-DD-dd 3-Wire Serial 2V ~ 5.5V - 10µA @ 5V -40°C ~ 85°C (TA) Surface Mount - - 8-SOIC
DS1307Z+T&R/C01 Analog Devices Inc./Maxim Integrated

DS1307Z+T&R/C01

IC RTC CLK/CALENDAR I2C 8SOIC

Analog Devices Inc./Maxim Integrated

4,267
RFQ
DS1307Z+T&R/C01 Datasheet

Datasheet

- 8-SOIC (0.154", 3.90mm Width) Tape & Reel (TR) Obsolete Not Verified Clock/Calendar Leap Year, NVSRAM, Square Wave Output 56B HH:MM:SS (12/24 hr) YY-MM-DD-dd I2C, 2-Wire Serial 4.5V ~ 5.5V 2V ~ 3.5V 200µA @ 5V 0°C ~ 70°C Surface Mount - - 8-SOIC
MCP795W10T-I/ST Microchip Technology

MCP795W10T-I/ST

IC RTC CLK/CALENDAR SPI 14TSSOP

Microchip Technology

1,444
RFQ
MCP795W10T-I/ST Datasheet

Datasheet

- 14-TSSOP (0.173", 4.40mm Width) Tape & Reel (TR) Active Not Verified Clock/Calendar Alarm, EEPROM, Leap Year, Square Wave Output, SRAM, Watchdog Timer 64B HH:MM:SS:hh (12/24 hr) YY-MM-DD-dd SPI 1.8V ~ 3.6V 1.3V ~ 3.6V 1µA @ 1.8V ~ 5.5V -40°C ~ 85°C Surface Mount - - 14-TSSOP
1339D-31DVGI8 Renesas Electronics Corporation

1339D-31DVGI8

1339D-31 REAL TIME CLOCK

Renesas Electronics Corporation

1,421
RFQ
1339D-31DVGI8 Datasheet

Datasheet

- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) Tape & Reel (TR) Active - Clock/Calendar Alarm, Leap Year, Trickle-Charger - HH:MM:SS (12/24 hr) YY-MM-DD-dd I2C 3.3V ~ 5.5V 1.3V ~ 3.7V 150µA @ 3.63V -40°C ~ 85°C (TA) Surface Mount - - 8-TSSOP
DS1340U-33 Analog Devices Inc./Maxim Integrated

DS1340U-33

IC RTC CLOCK/CALENDAR I2C 8UMAX

Analog Devices Inc./Maxim Integrated

1,770
RFQ
DS1340U-33 Datasheet

Datasheet

- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) Tube Obsolete Not Verified Clock/Calendar Leap Year, Trickle-Charger - HH:MM:SS (24 hr) YY-MM-DD-dd I2C, 2-Wire Serial 2.97V ~ 5.5V 1.3V ~ 5.5V 150µA @ 5.5V -40°C ~ 85°C Surface Mount - - 8-uMAX/uSOP
DS1302Z+T&R/C07 Analog Devices Inc./Maxim Integrated

DS1302Z+T&R/C07

IC RTC CLK/CALENDAR SER 8SOIC

Analog Devices Inc./Maxim Integrated

3,589
RFQ
DS1302Z+T&R/C07 Datasheet

Datasheet

- 8-SOIC (0.154", 3.90mm Width) Tape & Reel (TR) Obsolete Not Verified Clock/Calendar Leap Year, NVSRAM, Trickle-Charger 31B HH:MM:SS (12/24 hr) YY-MM-DD-dd 3-Wire Serial 2V ~ 5.5V 2V ~ 5.5V 0.3µA ~ 1µA @ 2V ~ 5V 0°C ~ 70°C Surface Mount - - 8-SOIC
1338D-31DVGI8 Renesas Electronics Corporation

1338D-31DVGI8

1338D-31 REAL TIME CLOCK

Renesas Electronics Corporation

3,637
RFQ
1338D-31DVGI8 Datasheet

Datasheet

- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) Tape & Reel (TR) Active - Clock/Calendar Leap Year, RAM, Square Wave Output 56B HH:MM:SS (12/24 hr) YY-MM-DD-dd I2C 3.3V ~ 5.5V 1.3V ~ 3.7V 2µA @ 3.63V -40°C ~ 85°C (TA) Surface Mount - - 8-TSSOP
MCP795B21T-I/ST Microchip Technology

MCP795B21T-I/ST

IC RTC CLK/CALENDAR SPI 14TSSOP

Microchip Technology

2,420
RFQ
MCP795B21T-I/ST Datasheet

Datasheet

- 14-TSSOP (0.173", 4.40mm Width) Tape & Reel (TR) Obsolete Not Verified Clock/Calendar Alarm, EEPROM, Leap Year, Square Wave Output, SRAM, Unique ID, Watchdog Timer 64B HH:MM:SS:hh (12/24 hr) YY-MM-DD-dd SPI 1.8V ~ 5.5V 1.3V ~ 5.5V 1µA @ 1.8V ~ 5.5V -40°C ~ 85°C Surface Mount - - 14-TSSOP
MCP795B22T-I/ST Microchip Technology

MCP795B22T-I/ST

IC RTC CLK/CALENDAR SPI 14TSSOP

Microchip Technology

4,186
RFQ
MCP795B22T-I/ST Datasheet

Datasheet

- 14-TSSOP (0.173", 4.40mm Width) Tape & Reel (TR) Obsolete Not Verified Clock/Calendar Alarm, EEPROM, Leap Year, Square Wave Output, SRAM, Unique ID, Watchdog Timer 64B HH:MM:SS:hh (12/24 hr) YY-MM-DD-dd SPI 1.8V ~ 5.5V 1.3V ~ 5.5V 1µA @ 1.8V ~ 5.5V -40°C ~ 85°C Surface Mount - - 14-TSSOP
V3020TP8B+ EM Microelectronic

V3020TP8B+

IC RTC CLK/CALENDAR SER 8TSSOP

EM Microelectronic

4,671
RFQ

-

- 8-TSSOP (0.173", 4.40mm Width) Tape & Reel (TR) Last Time Buy Not Verified Clock/Calendar Alarm, Leap Year, RAM 1B HH:MM:SS YY-MM-DD-dd 3-Wire Serial 1.2V ~ 5.5V - 4µA ~ 7µA @ 3V ~ 5V -40°C ~ 85°C (TA) Surface Mount - - 8-TSSOP
MCP795W11-I/SL Microchip Technology

MCP795W11-I/SL

IC RTC CLK/CALENDAR SPI 14SOIC

Microchip Technology

1,796
RFQ
MCP795W11-I/SL Datasheet

Datasheet

- 14-SOIC (0.154", 3.90mm Width) Tube Active Not Verified Clock/Calendar Alarm, EEPROM, Leap Year, Square Wave Output, SRAM, Unique ID, Watchdog Timer 64B HH:MM:SS:hh (12/24 hr) YY-MM-DD-dd SPI 1.8V ~ 3.6V 1.3V ~ 3.6V 1µA @ 1.8V ~ 5.5V -40°C ~ 85°C Surface Mount - - 14-SOIC
PCF85363ATT1/AJ NXP USA Inc.

PCF85363ATT1/AJ

IC RTC CLK/CALENDAR I2C 10TSSOP

NXP USA Inc.

1,968
RFQ
PCF85363ATT1/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 64B 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
MCP795W11T-I/SL Microchip Technology

MCP795W11T-I/SL

IC RTC CLK/CALENDAR SPI 14SOIC

Microchip Technology

3,454
RFQ
MCP795W11T-I/SL Datasheet

Datasheet

- 14-SOIC (0.154", 3.90mm Width) Tape & Reel (TR) Active Not Verified Clock/Calendar Alarm, EEPROM, Leap Year, Square Wave Output, SRAM, Unique ID, Watchdog Timer 64B HH:MM:SS:hh (12/24 hr) YY-MM-DD-dd SPI 1.8V ~ 3.6V 1.3V ~ 3.6V 1µA @ 1.8V ~ 5.5V -40°C ~ 85°C Surface Mount - - 14-SOIC
MCP795W12T-I/SL Microchip Technology

MCP795W12T-I/SL

IC RTC CLK/CALENDAR SPI 14SOIC

Microchip Technology

2,365
RFQ
MCP795W12T-I/SL Datasheet

Datasheet

- 14-SOIC (0.154", 3.90mm Width) Tape & Reel (TR) Active Not Verified Clock/Calendar Alarm, EEPROM, Leap Year, Square Wave Output, SRAM, Unique ID, Watchdog Timer 64B HH:MM:SS:hh (12/24 hr) YY-MM-DD-dd SPI 1.8V ~ 3.6V 1.3V ~ 3.6V 1µA @ 1.8V ~ 5.5V -40°C ~ 85°C Surface Mount - - 14-SOIC
MCP795W20T-I/SL Microchip Technology

MCP795W20T-I/SL

IC RTC CLK/CALENDAR SPI 14SOIC

Microchip Technology

4,464
RFQ
MCP795W20T-I/SL Datasheet

Datasheet

- 14-SOIC (0.154", 3.90mm Width) Tape & Reel (TR) Active Not Verified Clock/Calendar Alarm, EEPROM, Leap Year, Square Wave Output, SRAM, Watchdog Timer 64B HH:MM:SS:hh (12/24 hr) YY-MM-DD-dd SPI 1.8V ~ 3.6V 1.3V ~ 3.6V 1µA @ 1.8V ~ 5.5V -40°C ~ 85°C Surface Mount - - 14-SOIC
M41T82SM6E STMicroelectronics

M41T82SM6E

IC RTC CLK/CALENDAR I2C 8SOIC

STMicroelectronics

2,227
RFQ
M41T82SM6E Datasheet

Datasheet

- 8-SOIC (0.154", 3.90mm Width) Tube Obsolete Not Verified Clock/Calendar Alarm, Leap Year, SRAM, Watchdog Timer 7B HH:MM:SS:hh (24 hr) YY-MM-DD-dd I2C, 2-Wire Serial 3V ~ 5.5V 2V ~ 5.5V 10µA @ 5.5V -40°C ~ 85°C Surface Mount - - 8-SOIC
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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.