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
MCP7940N-I/P Microchip Technology

MCP7940N-I/P

IC RTC CLOCK/CALENDAR I2C 8DIP

Microchip Technology

1,813
RFQ
MCP7940N-I/P Datasheet

Datasheet

- 8-DIP (0.300", 7.62mm) Tube Active Not Verified Clock/Calendar Alarm, Leap Year, Square Wave Output, SRAM 64B HH:MM:SS (12/24 hr) YY-MM-DD-dd I2C, 2-Wire Serial 1.8V ~ 5.5V 1.3V ~ 5.5V 1.2µA @ 3.3V -40°C ~ 85°C Through Hole Automotive AEC-Q100 8-PDIP
MCP79400-I/SN Microchip Technology

MCP79400-I/SN

IC RTC CLK/CALENDAR I2C 8SOIC

Microchip Technology

4,241
RFQ
MCP79400-I/SN Datasheet

Datasheet

- 8-SOIC (0.154", 3.90mm Width) Tube Active Not Verified Clock/Calendar Alarm, Leap Year, Square Wave Output, SRAM, Unique ID 64B HH:MM:SS (12/24 hr) YY-MM-DD-dd I2C, 2-Wire Serial 1.8V ~ 5.5V 1.3V ~ 5.5V 1.2µA (Typ) @ 3.3V -40°C ~ 85°C Surface Mount - - 8-SOIC
MCP7940NT-E/MS Microchip Technology

MCP7940NT-E/MS

IC RTC CLK/CALENDAR I2C 8MSOP

Microchip Technology

7,012
RFQ
MCP7940NT-E/MS 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, SRAM 64B HH:MM:SS (12/24 hr) YY-MM-DD-dd I2C, 2-Wire Serial 1.8V ~ 5.5V 1.3V ~ 5.5V 1.2µA @ 3.3V -40°C ~ 125°C Surface Mount Automotive AEC-Q100 8-MSOP
MCP79400T-I/MS Microchip Technology

MCP79400T-I/MS

IC RTC CLK/CALENDAR I2C 8MSOP

Microchip Technology

5,673
RFQ
MCP79400T-I/MS 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, SRAM, Unique ID 64B HH:MM:SS (12/24 hr) YY-MM-DD-dd I2C, 2-Wire Serial 1.8V ~ 5.5V 1.3V ~ 5.5V 1.2µA (Typ) @ 3.3V -40°C ~ 85°C Surface Mount - - 8-MSOP
MCP79402-I/SN Microchip Technology

MCP79402-I/SN

IC RTC CLK/CALENDAR I2C 8SOIC

Microchip Technology

878
RFQ
MCP79402-I/SN Datasheet

Datasheet

- 8-SOIC (0.154", 3.90mm Width) Tube Active Not Verified Clock/Calendar Alarm, Leap Year, Square Wave Output, SRAM, Unique ID 64B HH:MM:SS (12/24 hr) YY-MM-DD-dd I2C, 2-Wire Serial 1.8V ~ 5.5V 1.3V ~ 5.5V 1.2µA (Typ) @ 3.3V -40°C ~ 85°C Surface Mount - - 8-SOIC
MCP79401-I/SN Microchip Technology

MCP79401-I/SN

IC RTC CLK/CALENDAR I2C 8SOIC

Microchip Technology

395
RFQ
MCP79401-I/SN Datasheet

Datasheet

- 8-SOIC (0.154", 3.90mm Width) Tube Active Not Verified Clock/Calendar Alarm, Leap Year, Square Wave Output, SRAM, Unique ID 64B HH:MM:SS (12/24 hr) YY-MM-DD-dd I2C, 2-Wire Serial 1.8V ~ 5.5V 1.3V ~ 5.5V 1.2µA (Typ) @ 3.3V -40°C ~ 85°C Surface Mount - - 8-SOIC
MCP79410-I/ST Microchip Technology

MCP79410-I/ST

IC RTC CLK/CALENDAR I2C 8TSSOP

Microchip Technology

7,634
RFQ
MCP79410-I/ST Datasheet

Datasheet

- 8-TSSOP (0.173", 4.40mm Width) Tube Active Not Verified Clock/Calendar Alarm, Leap Year, Square Wave Output, SRAM, Unique ID 64B, 1Kb HH:MM:SS (12/24 hr) YY-MM-DD-dd I2C, 2-Wire Serial 1.8V ~ 5.5V 1.3V ~ 5.5V 1.2µA @ 3.3V -40°C ~ 85°C Surface Mount - - 8-TSSOP
MCP79410T-I/ST Microchip Technology

MCP79410T-I/ST

IC RTC CLK/CALENDAR I2C 8TSSOP

Microchip Technology

5,235
RFQ
MCP79410T-I/ST Datasheet

Datasheet

- 8-TSSOP (0.173", 4.40mm Width) Tape & Reel (TR) Active Not Verified Clock/Calendar Alarm, Leap Year, Square Wave Output, SRAM, Unique ID 64B, 1Kb HH:MM:SS (12/24 hr) YY-MM-DD-dd I2C, 2-Wire Serial 1.8V ~ 5.5V 1.3V ~ 5.5V 1.2µA @ 3.3V -40°C ~ 85°C Surface Mount - - 8-TSSOP
S-35390A-I8T1U ABLIC Inc.

S-35390A-I8T1U

IC RTC CLK/CALENDAR I2C SNT8A

ABLIC Inc.

14,154
RFQ
S-35390A-I8T1U Datasheet

Datasheet

- 8-SMD, Flat Leads Tape & Reel (TR) Active Not Verified Clock/Calendar Alarm, Leap Year - HH:MM:SS (12/24 hr) YY-MM-DD-dd I2C, 2-Wire Serial 1.3V ~ 5.5V - 0.93µA ~ 1.1µA @ 3V ~ 5V -40°C ~ 85°C Surface Mount - - SNT-8A
MCP79411T-I/SN Microchip Technology

MCP79411T-I/SN

IC RTC CLK/CALENDAR I2C 8SOIC

Microchip Technology

25,535
RFQ
MCP79411T-I/SN Datasheet

Datasheet

- 8-SOIC (0.154", 3.90mm Width) Tape & Reel (TR) Active Not Verified Clock/Calendar Alarm, Leap Year, Square Wave Output, SRAM, Unique ID 64B, 1Kb HH:MM:SS (12/24 hr) YY-MM-DD-dd I2C, 2-Wire Serial 1.8V ~ 5.5V 1.3V ~ 5.5V 1.2µA @ 3.3V -40°C ~ 85°C Surface Mount - - 8-SOIC
MCP79412-I/SN Microchip Technology

MCP79412-I/SN

IC RTC CLK/CALENDAR I2C 8SOIC

Microchip Technology

11,815
RFQ
MCP79412-I/SN Datasheet

Datasheet

- 8-SOIC (0.154", 3.90mm Width) Tube Active Not Verified Clock/Calendar Alarm, Leap Year, Square Wave Output, SRAM, Unique ID 64B, 1Kb HH:MM:SS (12/24 hr) YY-MM-DD-dd I2C, 2-Wire Serial 1.8V ~ 5.5V 1.3V ~ 5.5V 1.2µA @ 3.3V -40°C ~ 85°C Surface Mount - - 8-SOIC
MCP79412T-I/SN Microchip Technology

MCP79412T-I/SN

IC RTC CLK/CALENDAR I2C 8SOIC

Microchip Technology

1,044
RFQ
MCP79412T-I/SN Datasheet

Datasheet

- 8-SOIC (0.154", 3.90mm Width) Tape & Reel (TR) Active Not Verified Clock/Calendar Alarm, Leap Year, Square Wave Output, SRAM, Unique ID 64B, 1Kb HH:MM:SS (12/24 hr) YY-MM-DD-dd I2C, 2-Wire Serial 1.8V ~ 5.5V 1.3V ~ 5.5V 1.2µA @ 3.3V -40°C ~ 85°C Surface Mount - - 8-SOIC
BQ32002DR Texas Instruments

BQ32002DR

IC RTC CLK/CALENDAR I2C 8SOIC

Texas Instruments

7,070
RFQ
BQ32002DR Datasheet

Datasheet

- 8-SOIC (0.154", 3.90mm Width) Tape & Reel (TR) Active Not Verified Clock/Calendar Leap Year, Square Wave Output - HH:MM:SS (24 hr) YY-MM-DD-dd I2C, 2-Wire Serial 3V ~ 3.6V 1.4V ~ 3.6V 65µA @ 3.3V -40°C ~ 85°C Surface Mount - - 8-SOIC
MCP79412-I/ST Microchip Technology

MCP79412-I/ST

IC RTC CLK/CALENDAR I2C 8TSSOP

Microchip Technology

410
RFQ
MCP79412-I/ST Datasheet

Datasheet

- 8-TSSOP (0.173", 4.40mm Width) Tube Active Not Verified Clock/Calendar Alarm, Leap Year, Square Wave Output, SRAM, Unique ID 64B, 1Kb HH:MM:SS (12/24 hr) YY-MM-DD-dd I2C, 2-Wire Serial 1.8V ~ 5.5V 1.3V ~ 5.5V 1.2µA @ 3.3V -40°C ~ 85°C Surface Mount - - 8-TSSOP
PCF85263ATT1/AZ NXP USA Inc.

PCF85263ATT1/AZ

IC RTC CLK/CALENDAR I2C 10TSSOP

NXP USA Inc.

6,286
RFQ
PCF85263ATT1/AZ Datasheet

Datasheet

- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width) Tape & Reel (TR) Active Not Verified Clock/Calendar Alarm, Leap Year, Watchdog Timer - HH:MM:SS:hh (12/24 hr) YY-MM-DD-dd I2C 0.9V ~ 1.8V, 0.9V ~ 5.5V 0.9V ~ 5.5V 0.885µA @ 3.3V -40°C ~ 85°C (TA) Surface Mount Automotive AEC-Q100 10-TSSOP
MCP79412T-I/MNY Microchip Technology

MCP79412T-I/MNY

IC RTC CLK/CALENDAR I2C 8TDFN

Microchip Technology

4,200
RFQ
MCP79412T-I/MNY Datasheet

Datasheet

- 8-WFDFN Exposed Pad Tape & Reel (TR) Active Not Verified Clock/Calendar Alarm, Leap Year, Square Wave Output, SRAM, Unique ID 64B, 1Kb HH:MM:SS (12/24 hr) YY-MM-DD-dd I2C, 2-Wire Serial 1.8V ~ 5.5V 1.3V ~ 5.5V 1.2µA @ 3.3V -40°C ~ 85°C Surface Mount - - 8-TDFN (2x3)
PCF8563BS/4,118 NXP USA Inc.

PCF8563BS/4,118

IC RTC CLK/CALENDAR I2C 10HVSON

NXP USA Inc.

17,656
RFQ
PCF8563BS/4,118 Datasheet

Datasheet

- 10-VFDFN Exposed Pad Tape & Reel (TR) Active Not Verified Clock/Calendar Alarm, Leap Year, Watchdog Timer - HH:MM:SS (24 hr) YY-MM-DD-dd I2C, 2-Wire Serial 1V ~ 5.5V - 0.6µA ~ 0.75µA @ 2V ~ 5V -40°C ~ 85°C Surface Mount - - 10-HVSON (3x3)
MCP79511-I/MS Microchip Technology

MCP79511-I/MS

IC RTC CLK/CALENDAR SPI 10MSOP

Microchip Technology

2,294
RFQ

-

- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width) Tube 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/MS Microchip Technology

MCP79520T-I/MS

IC RTC CLK/CALENDAR SPI 10MSOP

Microchip Technology

1,488
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
MCP79511T-I/MS Microchip Technology

MCP79511T-I/MS

IC RTC CLK/CALENDAR SPI 10MSOP

Microchip Technology

1,461
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
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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.