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Microchip Technology Real Time Clock

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Part #

Real Time Clock I2C GP RTCC 64B SRAM

MCP7940N-I/ST
Microchip Technology
1: S/3.50
301In Stock
500Expected 10/26/2026

Mfr. Part #
MCP7940N-I/ST

Mouser Part #
579-MCP7940N-I/ST

Microchip Technology

Real Time Clock I2C GP RTCC 64B SRAM

Learn More

Datasheet

301In Stock

500Expected 10/26/2026

S/3.50

S/3.23

S/3.11

Min.: 1
Mult.: 1

Serial 2-Wire, I2C

YY-MM-DD-dd

HH:MM:SS:hh (12 hr, 24 hr)

64 B

TSSOP-8

Backup Switching

1.8 V

5.5 V

- 40 C

+ 85 C

SMD/SMT

Tube

Real Time Clock I2C GP RTCC 1Kb EE 64B SRAM ID

MCP79410-I/ST
Microchip Technology
1: S/4.20
954In Stock

Mfr. Part #
MCP79410-I/ST

Mouser Part #
579-MCP79410-I/ST

Microchip Technology

Real Time Clock I2C GP RTCC 1Kb EE 64B SRAM ID

Learn More

Datasheet

954In Stock

S/4.20

Min.: 1
Mult.: 1

I2C

YY-MM-DD-dd

HH:MM:SS:hh (12 hr, 24 hr)

64 B

TSSOP-8

Backup Switching

1.8 V

5.5 V

- 40 C

+ 85 C

SMD/SMT

Tube

Real Time Clock I2C GP RTCC 1Kb EE 64B SRAM EUI-48

MCP79411-I/MS
Microchip Technology
1: S/4.59
1,035In Stock

Mfr. Part #
MCP79411-I/MS

Mouser Part #
579-MCP79411IMS

Microchip Technology

Real Time Clock I2C GP RTCC 1Kb EE 64B SRAM EUI-48

Learn More

Datasheet

1,035In Stock

S/4.59

Min.: 1
Mult.: 1

I2C

YY-MM-DD-dd

HH:MM:SS:hh (12 hr, 24 hr)

64 B

MSOP-8

Backup Switching

1.8 V

5.5 V

- 40 C

+ 85 C

SMD/SMT

Tube

Real Time Clock SPI GP RTCC 1Kb EE 64B SRAM ID

MCP79510-I/MS
Microchip Technology
1: S/5.02
911In Stock

Mfr. Part #
MCP79510-I/MS

Mouser Part #
579-MCP79510-I/MS

Microchip Technology

Real Time Clock SPI GP RTCC 1Kb EE 64B SRAM ID

Learn More

Datasheet

911In Stock

S/5.02

Min.: 1
Mult.: 1

SPI

YY-MM-DD-dd

HH:MM:SS:hh (12 hr, 24 hr)

1 kB

MSOP-10

Backup Switching

1.8 V

3.6 V

- 40 C

+ 85 C

SMD/SMT

Tube

Real Time Clock SPI GP RTCC 1Kb EE 64B SRAM EUI-48

MCP79511-I/MS
Microchip Technology
1: S/5.41
547In Stock

Mfr. Part #
MCP79511-I/MS

Mouser Part #
579-MCP79511-I/MS

Microchip Technology

Real Time Clock SPI GP RTCC 1Kb EE 64B SRAM EUI-48

Learn More

Datasheet

547In Stock

S/5.41

Min.: 1
Mult.: 1

SPI

YY-MM-DD-dd

HH:MM:SS:hh (12 hr, 24 hr)

64 B

MSOP-10

Backup Switching

1.8 V

3.6 V

- 40 C

+ 85 C

SMD/SMT

Tube

Real Time Clock SPI GP RTCC 1Kb EE 64B SRAM EUI-64

MCP79512-I/MS
Microchip Technology
1: S/5.41
660In Stock

Mfr. Part #
MCP79512-I/MS

Mouser Part #
579-MCP79512-I/MS

Microchip Technology

Real Time Clock SPI GP RTCC 1Kb EE 64B SRAM EUI-64

Learn More

Datasheet

660In Stock

S/5.41

Min.: 1
Mult.: 1

SPI

YY-MM-DD-dd

HH:MM:SS:hh (12 hr, 24 hr)

64 B

MSOP-10

Backup Switching

1.8 V

3.6 V

- 40 C

+ 85 C

SMD/SMT

Tube

Real Time Clock 1Kb EE 64B SRAM WD TED ID

MCP795W10-I/SL
Microchip Technology
1: S/6.81
260In Stock

Mfr. Part #
MCP795W10-I/SL

Mouser Part #
579-MCP795W10-I/SL

Microchip Technology

Real Time Clock 1Kb EE 64B SRAM WD TED ID

Learn More

Datasheet

260In Stock

S/6.81

Min.: 1
Mult.: 1

SPI

YY-MM-DD-dd

HH:MM:SS:hh (12 hr, 24 hr)

1 kB

SOIC-14

Backup Switching

1.8 V

5.5 V

- 40 C

+ 85 C

SMD/SMT

Tube

Real Time Clock 1Kb EE 64B SRAM WD TED EUI-48

MCP795W11-I/ST
Microchip Technology
1: S/7.36
72In Stock

Mfr. Part #
MCP795W11-I/ST

Mouser Part #
579-MCP795W11-I/ST

Microchip Technology

Real Time Clock 1Kb EE 64B SRAM WD TED EUI-48

Learn More

Datasheet

72In Stock

S/7.36

Min.: 1
Mult.: 1

SPI

YY-MM-DD-dd

HH:MM:SS:hh (12 hr, 24 hr)

1 kB

TSSOP-14

Backup Switching

1.8 V

5.5 V

- 40 C

+ 85 C

SMD/SMT

Tube

Real Time Clock 2Kb EE 64B SRAM WD TED ID

MCP795W20-I/SL
Microchip Technology
1: S/7.20
336In Stock

Mfr. Part #
MCP795W20-I/SL

Mouser Part #
579-MCP795W20-I/SL

Microchip Technology

Real Time Clock 2Kb EE 64B SRAM WD TED ID

Learn More

Datasheet

336In Stock

S/7.20

Min.: 1
Mult.: 1

SPI

YY-MM-DD-dd

HH:MM:SS:hh (12 hr, 24 hr)

2 kB

SOIC-14

Backup Switching

1.8 V

5.5 V

- 40 C

+ 85 C

SMD/SMT

Tube

Real Time Clock 2Kb EE 64B SRAM WD TED ID

MCP795W20-I/ST
Microchip Technology
1: S/7.36
192In Stock

Mfr. Part #
MCP795W20-I/ST

Mouser Part #
579-MCP795W20-I/ST

Microchip Technology

Real Time Clock 2Kb EE 64B SRAM WD TED ID

Learn More

Datasheet

192In Stock

S/7.36

S/6.81

S/6.46

Min.: 1
Mult.: 1

SPI

YY-MM-DD-dd

HH:MM:SS:hh (12 hr, 24 hr)

2 kB

TSSOP-14

Backup Switching

1.8 V

5.5 V

- 40 C

+ 85 C

SMD/SMT

Tube

Real Time Clock 2Kb EE 64B SRAM WD TED EUI-48

MCP795W21-I/SL
Microchip Technology
1: S/7.55
142In Stock

Mfr. Part #
MCP795W21-I/SL

Mouser Part #
579-MCP795W21-I/SL

Microchip Technology

Real Time Clock 2Kb EE 64B SRAM WD TED EUI-48

Learn More

Datasheet

142In Stock

S/7.55

Min.: 1
Mult.: 1

SPI

YY-MM-DD-dd

HH:MM:SS:hh (12 hr, 24 hr)

2 kB

SOIC-14

Backup Switching

1.8 V

5.5 V

- 40 C

+ 85 C

SMD/SMT

Tube

Real Time Clock 2Kb EE 64B SRAM WD TED EUI-48

MCP795W21-I/ST
Microchip Technology
1: S/7.71
121In Stock

Mfr. Part #
MCP795W21-I/ST

Mouser Part #
579-MCP795W21-I/ST

Microchip Technology

Real Time Clock 2Kb EE 64B SRAM WD TED EUI-48

Learn More

Datasheet

121In Stock

S/7.71

Min.: 1
Mult.: 1

SPI

YY-MM-DD-dd

HH:MM:SS:hh (12 hr, 24 hr)

2 kB

TSSOP-14

Backup Switching

1.8 V

5.5 V

- 40 C

+ 85 C

SMD/SMT

Tube

Real Time Clock 2Kb EE 64B SRAM WD TED EUI-64

MCP795W22-I/SL
Microchip Technology
1: S/7.55
5In Stock

Mfr. Part #
MCP795W22-I/SL

Mouser Part #
579-MCP795W22-I/SL

Microchip Technology

Real Time Clock 2Kb EE 64B SRAM WD TED EUI-64

Learn More

Datasheet

5In Stock

S/7.55

S/7.01

S/6.66

Min.: 1
Mult.: 1

SPI

YY-MM-DD-dd

HH:MM:SS:hh (12 hr, 24 hr)

2 kB

SOIC-14

Backup Switching

1.8 V

5.5 V

- 40 C

+ 85 C

SMD/SMT

Tube

Real Time Clock I2C GP RTCC 1Kb EE 64B SRAM EUI-48

MCP79411-I/ST
Microchip Technology
1: S/4.59
1,108In Stock

Mfr. Part #
MCP79411-I/ST

Mouser Part #
579-MCP79411IST

Microchip Technology

Real Time Clock I2C GP RTCC 1Kb EE 64B SRAM EUI-48

Learn More

Datasheet

1,108In Stock

S/4.59

Min.: 1
Mult.: 1

I2C

YY-MM-DD-dd

HH:MM:SS:hh (12 hr, 24 hr)

64 B

TSSOP-8

Backup Switching

1.8 V

5.5 V

- 40 C

+ 85 C

SMD/SMT

Tube

Real Time Clock SPI GP RTCC 2Kb EE 64B SRAM ID

MCP79520T-I/MN
Microchip Technology
1: S/5.41
3,178In Stock

Mfr. Part #
MCP79520T-I/MN

Mouser Part #
579-MCP79520T-I/MN

Microchip Technology

Real Time Clock SPI GP RTCC 2Kb EE 64B SRAM ID

Learn More

Datasheet

3,178In Stock

Cut Tape

S/5.41

Reel

S/5.41

Min.: 1
Mult.: 1

: 3,300

Reel, Cut Tape

Real Time Clock SPI GP RTCC 2Kb EE 64B SRAM EUI-48

MCP79521-I/MS
Microchip Technology
1: S/5.76
150In Stock

Mfr. Part #
MCP79521-I/MS

Mouser Part #
579-MCP79521-I/MS

Microchip Technology

Real Time Clock SPI GP RTCC 2Kb EE 64B SRAM EUI-48

Learn More

Datasheet

150In Stock

S/5.76

Min.: 1
Mult.: 1

SPI

YY-MM-DD-dd

HH:MM:SS:hh (12 hr, 24 hr)

64 B

MSOP-10

Backup Switching

1.8 V

3.6 V

- 40 C

+ 85 C

SMD/SMT

Tube

Real Time Clock SPI GP RTCC 2Kb EE 64B SRAM EUI-48

MCP79521T-I/MS
Microchip Technology
1: S/5.76
920In Stock

Mfr. Part #
MCP79521T-I/MS

Mouser Part #
579-MCP79521T-I/MS

Microchip Technology

Real Time Clock SPI GP RTCC 2Kb EE 64B SRAM EUI-48

Learn More

Datasheet

920In Stock

Cut Tape

S/5.76

Reel

S/5.76

MouseReel Available

Min.: 1
Mult.: 1

: 2,500

Serial, I2C, SPI

YY-MM-DD-dd

HH:MM:SS:hh (12 hr, 24 hr)

64 B

Backup Switching

1.8 V

3.6 V

- 40 C

+ 85 C

SMD/SMT

Reel, Cut Tape, MouseReel

Real Time Clock I2C GP RTCC 64B SRAM

MCP7940NT-I/MNY
Microchip Technology
1: S/3.70
9,743Expected 9/28/2026

Mfr. Part #
MCP7940NT-I/MNY

Mouser Part #
579-MCP7940NT-I/MNY

Microchip Technology

Real Time Clock I2C GP RTCC 64B SRAM

Learn More

Datasheet

9,743Expected 9/28/2026

Cut Tape

S/3.70

Reel

S/3.70

MouseReel Available

Min.: 1
Mult.: 1

: 3,300

Serial 2-Wire, I2C

YY-MM-DD-dd

HH:MM:SS:hh (12 hr, 24 hr)

64 B

TDFN-8

Backup Switching

1.8 V

5.5 V

- 40 C

+ 85 C

SMD/SMT

Reel, Cut Tape, MouseReel

Real Time Clock I2C GP RTCC 1Kb EE 64B SRAM EUI-48

MCP79411T-I/MNY
Microchip Technology
1: S/4.79
124Expected 9/4/2026

Mfr. Part #
MCP79411T-I/MNY

Mouser Part #
579-MCP79411TIMNY

Microchip Technology

Real Time Clock I2C GP RTCC 1Kb EE 64B SRAM EUI-48

Learn More

Datasheet

124Expected 9/4/2026

Cut Tape

S/4.79

Reel

S/4.79

MouseReel Available

Min.: 1
Mult.: 1

: 3,300

I2C

YY-MM-DD-dd

HH:MM:SS (24 hr)

64 B

TDFN-8

Backup Switching

1.8 V

5.5 V

- 40 C

+ 85 C

SMD/SMT

Reel, Cut Tape, MouseReel

Real Time Clock I2C GP RTCC 64B SRAM ID

MCP79400T-I/MNY
Microchip Technology
1: S/4.05
Non-Stocked Lead-Time 12 Weeks

Mfr. Part #
MCP79400T-I/MNY

Mouser Part #
579-MCP79400TIMNY

Microchip Technology

Real Time Clock I2C GP RTCC 64B SRAM ID

Learn More

Datasheet

Non-Stocked Lead-Time 12 Weeks

Cut Tape

S/4.05

Reel

S/4.05

Min.: 1
Mult.: 1

: 3,300

Reel, Cut Tape

Real Time Clock I2C GP RTCC 64B SRAM ID

MCP79400T-I/ST
Microchip Technology
1: S/3.89
Non-Stocked Lead-Time 10 Weeks

Mfr. Part #
MCP79400T-I/ST

Mouser Part #
579-MCP79400TIST

Microchip Technology

Real Time Clock I2C GP RTCC 64B SRAM ID

Learn More

Datasheet

Non-Stocked Lead-Time 10 Weeks

Cut Tape

S/3.89

Reel

S/3.89

Min.: 1
Mult.: 1

: 2,500

Reel, Cut Tape

Real Time Clock I2C GP RTCC 64B SRAM EUI-48

MCP79401T-I/MS
Microchip Technology
2,500: S/4.20
Non-Stocked Lead-Time 9 Weeks

Mfr. Part #
MCP79401T-I/MS

Mouser Part #
579-MCP79401TIMS

Microchip Technology

Real Time Clock I2C GP RTCC 64B SRAM EUI-48

Learn More

Datasheet

Non-Stocked Lead-Time 9 Weeks

Reel

S/4.20

Min.: 2,500
Mult.: 2,500

: 2,500

Reel

Real Time Clock I2C GP RTCC 64B SRAM EUI-48

MCP79401T-I/SN
Microchip Technology
1: S/4.05
Non-Stocked Lead-Time 10 Weeks

Mfr. Part #
MCP79401T-I/SN

Mouser Part #
579-MCP79401TISN

Microchip Technology

Real Time Clock I2C GP RTCC 64B SRAM EUI-48

Learn More

Datasheet

Non-Stocked Lead-Time 10 Weeks

Cut Tape

S/4.05

Reel

S/4.05

Min.: 1
Mult.: 1

: 3,300

Reel, Cut Tape

Real Time Clock I2C GP RTCC 64B SRAM EUI-48

MCP79401T-I/ST
Microchip Technology
2,500: S/4.20
Non-Stocked Lead-Time 10 Weeks

Mfr. Part #
MCP79401T-I/ST

Mouser Part #
579-MCP79401TIST

Microchip Technology

Real Time Clock I2C GP RTCC 64B SRAM EUI-48

Learn More

Datasheet

Non-Stocked Lead-Time 10 Weeks

Reel

S/4.20

Min.: 2,500
Mult.: 2,500

: 2,500

Reel

Real Time Clock I2C GP RTCC 64B SRAM EUI-64

MCP79402-I/ST
Microchip Technology
1: S/4.20
Lead-Time 10 Weeks

Mfr. Part #
MCP79402-I/ST

Mouser Part #
579-MCP79402IST

Microchip Technology

Real Time Clock I2C GP RTCC 64B SRAM EUI-64

Learn More

Datasheet

Lead-Time 10 Weeks

S/4.20

Min.: 1
Mult.: 1

Serial 2-Wire, I2C

YY-MM-DD-dd

HH:MM:SS:hh (12 hr, 24 hr)

64 B

TSSOP-8

Backup Switching

1.8 V

5.5 V

- 40 C

+ 85 C

SMD/SMT

Tube

Microchip Technology Real Time Clock

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