Real Time Clock – Mouser Singapore

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Real-Time Clocks

Microchip Real-Time Clocks are offered from basic low-cost devices to various mid-range devices. These highly integrated devices have a usable amount of non-volatile memory and a combination of features that are very effective when operating within a single battery-backed clock device. With I2C and SPI RTCCs, various applications can be supported with fewer features and lower performance.

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Part #

Real Time Clock I2C GP RTCC 64B SRAM

MCP7940N-I/ST
Microchip Technology
1: $1.22
201In Stock
500Expected 26/10/2026

Mfr. Part No.
MCP7940N-I/ST

Mouser Part No
579-MCP7940N-I/ST

Microchip Technology

Real Time Clock I2C GP RTCC 64B SRAM

Learn More

Datasheet

201In Stock

500Expected 26/10/2026

$1.22

$1.13

$1.09

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: $1.47
954In Stock

Mfr. Part No.
MCP79410-I/ST

Mouser Part No
579-MCP79410-I/ST

Microchip Technology

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

Learn More

Datasheet

954In Stock

$1.47

$1.37

$1.31

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: $1.60
1,021In Stock

Mfr. Part No.
MCP79411-I/MS

Mouser Part No
579-MCP79411IMS

Microchip Technology

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

Learn More

Datasheet

1,021In Stock

$1.60

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: $1.75
889In Stock

Mfr. Part No.
MCP79510-I/MS

Mouser Part No
579-MCP79510-I/MS

Microchip Technology

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

Learn More

Datasheet

889In Stock

$1.75

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: $1.89
547In Stock

Mfr. Part No.
MCP79511-I/MS

Mouser Part No
579-MCP79511-I/MS

Microchip Technology

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

Learn More

Datasheet

547In Stock

$1.89

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: $1.89
609In Stock

Mfr. Part No.
MCP79512-I/MS

Mouser Part No
579-MCP79512-I/MS

Microchip Technology

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

Learn More

Datasheet

609In Stock

$1.89

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: $2.38
210In Stock

Mfr. Part No.
MCP795W10-I/SL

Mouser Part No
579-MCP795W10-I/SL

Microchip Technology

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

Learn More

Datasheet

210In Stock

$2.38

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: $2.57
5In Stock
192Expected 20/10/2026

Mfr. Part No.
MCP795W11-I/ST

Mouser Part No
579-MCP795W11-I/ST

Microchip Technology

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

Learn More

Datasheet

5In Stock

192Expected 20/10/2026

$2.57

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: $2.52
346In Stock

Mfr. Part No.
MCP795W20-I/SL

Mouser Part No
579-MCP795W20-I/SL

Microchip Technology

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

Learn More

Datasheet

346In Stock

$2.52

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: $2.57
192In Stock

Mfr. Part No.
MCP795W20-I/ST

Mouser Part No
579-MCP795W20-I/ST

Microchip Technology

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

Learn More

Datasheet

192In Stock

$2.57

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: $2.64
42In Stock
228Expected 5/10/2026

Mfr. Part No.
MCP795W21-I/SL

Mouser Part No
579-MCP795W21-I/SL

Microchip Technology

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

Learn More

Datasheet

42In Stock

228Expected 5/10/2026

$2.64

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: $2.69
121In Stock

Mfr. Part No.
MCP795W21-I/ST

Mouser Part No
579-MCP795W21-I/ST

Microchip Technology

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

Learn More

Datasheet

121In Stock

$2.69

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: $2.64
5In Stock

Mfr. Part No.
MCP795W22-I/SL

Mouser Part No
579-MCP795W22-I/SL

Microchip Technology

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

Learn More

Datasheet

5In Stock

$2.64

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: $1.60
1,108In Stock

Mfr. Part No.
MCP79411-I/ST

Mouser Part No
579-MCP79411IST

Microchip Technology

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

Learn More

Datasheet

1,108In Stock

$1.60

$1.47

$1.40

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: $1.89
3,178In Stock

Mfr. Part No.
MCP79520T-I/MN

Mouser Part No
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

$1.89

Reel

$1.89

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: $2.01
150In Stock

Mfr. Part No.
MCP79521-I/MS

Mouser Part No
579-MCP79521-I/MS

Microchip Technology

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

Learn More

Datasheet

150In Stock

$2.01

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: $2.01
920In Stock

Mfr. Part No.
MCP79521T-I/MS

Mouser Part No
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

$2.01

Reel

$2.01

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 1Kb EE 64B SRAM EUI-48

MCP79411T-I/MNY
Microchip Technology
1: $1.73
3,424On Order

Mfr. Part No.
MCP79411T-I/MNY

Mouser Part No
579-MCP79411TIMNY

Microchip Technology

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

Learn More

Datasheet

3,424On Order

Cut Tape

$1.73

Reel

$1.46

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

MCP7940NT-I/MNY
Microchip Technology
1: $1.29
9,743Expected 3/9/2026

Mfr. Part No.
MCP7940NT-I/MNY

Mouser Part No
579-MCP7940NT-I/MNY

Microchip Technology

Real Time Clock I2C GP RTCC 64B SRAM

Learn More

Datasheet

9,743Expected 3/9/2026

Cut Tape

$1.29

Reel

$1.29

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 64B SRAM ID

MCP79400T-I/MNY
Microchip Technology
1: $1.46
Non-Stocked Lead-Time 12 Weeks

Mfr. Part No.
MCP79400T-I/MNY

Mouser Part No
579-MCP79400TIMNY

Microchip Technology

Real Time Clock I2C GP RTCC 64B SRAM ID

Learn More

Datasheet

Non-Stocked Lead-Time 12 Weeks

Cut Tape

$1.46

Reel

$1.24

Min.: 1
Mult.: 1

: 3,300

Reel, Cut Tape

Real Time Clock I2C GP RTCC 64B SRAM ID

MCP79400T-I/ST
Microchip Technology
2,500: $1.36
Non-Stocked Lead-Time 10 Weeks

Mfr. Part No.
MCP79400T-I/ST

Mouser Part No
579-MCP79400TIST

Microchip Technology

Real Time Clock I2C GP RTCC 64B SRAM ID

Learn More

Datasheet

Non-Stocked Lead-Time 10 Weeks

Reel

$1.36

$1.35

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

: 2,500

Reel

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

MCP79401T-I/MS
Microchip Technology
2,500: $1.50
Non-Stocked Lead-Time 9 Weeks

Mfr. Part No.
MCP79401T-I/MS

Mouser Part No
579-MCP79401TIMS

Microchip Technology

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

Learn More

Datasheet

Non-Stocked Lead-Time 9 Weeks

Reel

$1.50

$1.48

$1.47

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

: 2,500

Reel

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

MCP79401T-I/SN
Microchip Technology
3,300: $1.41
Non-Stocked Lead-Time 10 Weeks

Mfr. Part No.
MCP79401T-I/SN

Mouser Part No
579-MCP79401TISN

Microchip Technology

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

Learn More

Datasheet

Non-Stocked Lead-Time 10 Weeks

Reel

$1.41

$1.40

Min.: 3,300
Mult.: 3,300

: 3,300

Reel

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

MCP79401T-I/ST
Microchip Technology
2,500: $1.48
Non-Stocked Lead-Time 10 Weeks

Mfr. Part No.
MCP79401T-I/ST

Mouser Part No
579-MCP79401TIST

Microchip Technology

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

Learn More

Datasheet

Non-Stocked Lead-Time 10 Weeks

Reel

$1.48

$1.47

$1.46

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: $1.47
Lead-Time 10 Weeks

Mfr. Part No.
MCP79402-I/ST

Mouser Part No
579-MCP79402IST

Microchip Technology

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

Learn More

Datasheet

Lead-Time 10 Weeks

$1.47

$1.37

$1.31

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

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