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Microcontrollers and Processors / Timers or RTCs / MCP7940M-I/SN
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MCP7940M-I/SN by: Microchip Technology Inc

REAL TIME CLOCK

Part Details for MCP7940M-I/SN by Microchip Technology Inc

Results Overview of MCP7940M-I/SN by Microchip Technology Inc

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MCP7940M-I/SN Information

MCP7940M-I/SN by Microchip Technology Inc is a Timer or RTC.
Timers or RTCs are under the broader part category of Microcontrollers and Processors.

Microcontrollers (MCUs) are small, low-power integrated circuits used to control embedded systems. Microcontrollers are primarily used to automate and control devices. Read more about Microcontrollers and Processors on our Microcontrollers and Processors part category page.

Price & Stock for MCP7940M-I/SN

Part # Distributor Description Stock Price Buy
DISTI # 93T1810
Newark Rtcc, Dd:Mm:Yyyyhh:Mm:Ss, I2C, Soic, Date Format:Dd:Mm:Yyyy, Clock Format:Hh:Mm:Ss, Clock Ic Type:Rtc, Supply Voltage Min:1.8V, Supply Voltage Max:5.5V, Clock Ic Case Style:Soic, No. Of Pins:8Pins, Ic Interface Type:I2C Rohs Compliant: Yes |Microchip MCP7940M-I/SN RoHS: Compliant Min Qty: 1 Package Multiple: 1 Date Code: 1 Container: Bulk 943
  • 1 $0.6700
  • 10 $0.6450
  • 25 $0.6200
  • 50 $0.6050
  • 100 $0.5900
$0.5900 / $0.6700 Buy Now
DISTI # MCP7940M-I/SN
Avnet Americas RTC IC, YY-MM-DD-DW, HH:MM:SS: 12Hr / 24Hr, I2C, 1.8 V to 5.5 V, 8 Pins, NSOIC - Rail/Tube (Alt: MCP7940M-I/SN) RoHS: Compliant Min Qty: 600 Package Multiple: 100 Lead time: 4 Weeks, 0 Days Container: Tube 0
  • 1 $0.6700
  • 25 $0.6200
  • 100 $0.5900
$0.5900 / $0.6700 Buy Now
DISTI # 579-MCP7940M-I/SN
Mouser Electronics Real Time Clock I2C RTCC 64B SRAM No VBAT RoHS: Compliant 2052
  • 1 $0.6700
  • 25 $0.6200
  • 100 $0.5900
$0.5900 / $0.6700 Buy Now
DISTI # V99:2348_06455044
Arrow Electronics Real Time Clock Serial 64byte Clock/Calendar/Alarm 8-Pin SOIC N Tube RoHS: Compliant Min Qty: 1 Package Multiple: 1 Lead time: 4 Weeks Date Code: 2251 Americas - 301
  • 1 $0.6092
$0.6092 Buy Now
DISTI # E54:1762_04227332
Arrow Electronics Real Time Clock Serial 64byte Clock/Calendar/Alarm 8-Pin SOIC N Tube RoHS: Compliant Min Qty: 1 Package Multiple: 1 Lead time: 4 Weeks Date Code: 2438 Europe - 70
  • 1 $0.6092
  • 25 $0.6092
  • 100 $0.6092
$0.6092 Buy Now
DISTI # 70388872
RS Microchip MCP7940M-I/SN, Real Time Clock, 64B RAM Serial-I2C, 8-Pin SOIC Min Qty: 600 Package Multiple: 1 Lead time: 6 Weeks, 0 Days Container: Bulk 0
  • 600 $1.2000
  • 6,000 $1.1400
  • 30,000 $1.0800
  • 60,000 $1.0200
$1.0200 / $1.2000 RFQ
Onlinecomponents.com Real Time Clock Serial - 64byte Clock/Calendar/Alarm Automotive 8-Pin SOIC N - Tube RoHS: Compliant 1500 In Stock
15200 Factory Stock
  • 100 $0.6780
  • 300 $0.6260
  • 1,000 $0.6170
  • 2,500 $0.5820
  • 5,000 $0.5740
  • 7,500 $0.5650
  • 10,000 $0.5570
  • 15,000 $0.5480
$0.5480 / $0.6780 Buy Now
DISTI # 68020640
Verical Real Time Clock Serial 64byte Clock/Calendar/Alarm 8-Pin SOIC N Tube RoHS: Compliant Min Qty: 100 Package Multiple: 100 Date Code: 2315 Americas - 1500
  • 100 $0.8814
  • 300 $0.8138
  • 1,000 $0.8021
  • 2,500 $0.7566
  • 5,000 $0.7462
$0.7462 / $0.8814 Buy Now
DISTI # 65767598
Verical Real Time Clock Serial 64byte Clock/Calendar/Alarm 8-Pin SOIC N Tube RoHS: Compliant Min Qty: 10 Package Multiple: 1 Date Code: 2251 Americas - 301
  • 10 $0.6092
$0.6092 Buy Now
DISTI # 87026896
Verical Real Time Clock Serial 64byte Clock/Calendar/Alarm 8-Pin SOIC N Tube RoHS: Compliant Min Qty: 8 Package Multiple: 1 Date Code: 2438 Americas - 64
  • 8 $1.2951
$1.2951 Buy Now
DISTI # MCP7940M-I/SN
TME IC: RTC circuit, I2C, SRAM, 64BSRAM, 1.8÷5.5VDC, SO8 Min Qty: 1 0
  • 1 $0.9500
  • 5 $0.9100
  • 25 $0.8700
  • 90 $0.8300
  • 240 $0.7900
$0.7900 / $0.9500 RFQ
NAC I2C RTCC, 64B SRAM, No VBAT - Package: 8 SOIC 3.90mm(.150in) TUBE RoHS: Compliant Min Qty: 600 Package Multiple: 100 Container: Tube 0
  • 1 $0.7400
  • 100 $0.6700
  • 500 $0.6200
  • 1,000 $0.6000
$0.6000 / $0.7400 Buy Now
DISTI # MCP7940M-I/SN
Avnet Silica RTC IC YYMMDDDW HHMMSS 12Hr 24Hr I2C 18 V to 55 V 8 Pins NSOIC (Alt: MCP7940M-I/SN) RoHS: Compliant Min Qty: 100 Package Multiple: 100 Lead time: 6 Weeks, 0 Days Silica - 0
Buy Now
DISTI # MCP7940M-I/SN
EBV Elektronik RTC IC YYMMDDDW HHMMSS 12Hr 24Hr I2C 18 V to 55 V 8 Pins NSOIC (Alt: MCP7940M-I/SN) RoHS: Compliant Min Qty: 100 Package Multiple: 100 Lead time: 5 Weeks, 0 Days EBV - 0
Buy Now
Master Electronics Real Time Clock Serial - 64byte Clock/Calendar/Alarm Automotive 8-Pin SOIC N - Tube RoHS: Compliant 1500 In Stock
15200 Factory Stock
  • 100 $0.6780
  • 300 $0.6260
  • 1,000 $0.6170
  • 2,500 $0.5820
  • 5,000 $0.5740
  • 7,500 $0.5650
  • 10,000 $0.5570
  • 15,000 $0.5480
$0.5480 / $0.6780 Buy Now

Part Details for MCP7940M-I/SN

MCP7940M-I/SN CAD Models

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MCP7940M-I/SN Part Data Attributes

Parametric Data
MCP7940M-I/SN Microchip Technology Inc
Buy Now Datasheet
Compare Parts:
MCP7940M-I/SN Microchip Technology Inc REAL TIME CLOCK
Rohs Code Yes
Part Life Cycle Code Active
Ihs Manufacturer MICROCHIP TECHNOLOGY INC
Package Description 3.90 MM, ROHS COMPLIANT, PLASTIC, SOIC-8
Reach Compliance Code compliant
ECCN Code EAR99
HTS Code 8542.39.00.01
Factory Lead Time 4 Weeks
Samacsys Manufacturer Microchip
Clock Frequency-Max 0.032 MHz
External Data Bus Width
Information Access Method SERIAL(I2C)
Interrupt Capability Y
JESD-30 Code R-PDSO-G8
JESD-609 Code e3
Length 4.9 mm
Moisture Sensitivity Level 1
Number of Terminals 8
Number of Timers
On Chip Data RAM Width 8
Operating Temperature-Max 85 °C
Operating Temperature-Min -40 °C
Package Body Material PLASTIC/EPOXY
Package Code SOP
Package Equivalence Code SOP8,.23
Package Shape RECTANGULAR
Package Style SMALL OUTLINE
Peak Reflow Temperature (Cel) 260
Qualification Status Not Qualified
RAM (words) 64
Screening Level TS 16949
Seated Height-Max 1.75 mm
Supply Current-Max 0.4 mA
Supply Voltage-Max 5.5 V
Supply Voltage-Min 1.8 V
Supply Voltage-Nom 2.5 V
Surface Mount YES
Technology CMOS
Temperature Grade INDUSTRIAL
Terminal Finish Matte Tin (Sn)
Terminal Form GULL WING
Terminal Pitch 1.27 mm
Terminal Position DUAL
Time-Min SECONDS
Time@Peak Reflow Temperature-Max (s) 30
Volatile YES
Width 3.9 mm
uPs/uCs/Peripheral ICs Type TIMER, REAL TIME CLOCK

Alternate Parts for MCP7940M-I/SN

This table gives cross-reference parts and alternative options found for MCP7940M-I/SN. The Form Fit Function (FFF) tab will give you the options that are more likely to serve as direct pin-to-pin alternates or drop-in parts. The Functional Equivalents tab will give you options that are likely to match the same function of MCP7940M-I/SN, but it may not fit your design. Always verify details of parts you are evaluating, as these parts are offered as suggestions for what you are looking for and are not guaranteed.

Part Number Manufacturer Composite Price Description Compare
MCP7940M-I/SNVAO Microchip Technology Inc Check for Price Real Time Clock, 1 Timer(s), CMOS, PDSO8 MCP7940M-I/SN vs MCP7940M-I/SNVAO
Part Number Manufacturer Composite Price Description Compare
MCP7940M-I/P Microchip Technology Inc $0.7712 REAL TIME CLOCK MCP7940M-I/SN vs MCP7940M-I/P
MCP7940N-I/MS Microchip Technology Inc $0.7928 REAL TIME CLOCK, PDSO8, PLASTIC, MSOP-8 MCP7940M-I/SN vs MCP7940N-I/MS
MCP7940NT-I/SN Microchip Technology Inc $0.8335 REAL TIME CLOCK, PDSO8, 3.90 MM, ROHS COMPLIANT, PLASTIC, SOIC-8 MCP7940M-I/SN vs MCP7940NT-I/SN
MCP7940N-E/SN Microchip Technology Inc $0.8853 REAL TIME CLOCK MCP7940M-I/SN vs MCP7940N-E/SN
DS1339AU+ Analog Devices Inc $3.6405 Low-Current, I2C, Serial Real-Time Clock, 8-MINI_SO-N/A, 8 Pins, -40 to 85C MCP7940M-I/SN vs DS1339AU+
MCP7940MT-I/MNY Microchip Technology Inc $50.7140 REAL TIME CLOCK MCP7940M-I/SN vs MCP7940MT-I/MNY
MCP7940MT-I/SNVAO Microchip Technology Inc Check for Price Real Time Clock, 1 Timer(s), CMOS, PDSO8 MCP7940M-I/SN vs MCP7940MT-I/SNVAO
DS1339AU+T Maxim Integrated Products Check for Price Real Time Clock, 1 Timer(s), CMOS, PDSO8, ROHS COMPLIANT, MSOP-8 MCP7940M-I/SN vs DS1339AU+T
MCP7940N-E/P Microchip Technology Inc Check for Price Real Time Clock MCP7940M-I/SN vs MCP7940N-E/P
MCP7940NT-E/SNVAO Microchip Technology Inc Check for Price Real Time Clock, 1 Timer(s), CMOS, PDSO8 MCP7940M-I/SN vs MCP7940NT-E/SNVAO

MCP7940M-I/SN Related Parts

MCP7940M-I/SN Frequently Asked Questions (FAQ)

  • The MCP7940M-I/SN can support clock frequencies up to 32 kHz.

  • The MCP7940M-I/SN automatically accounts for leap years, so no additional programming is required.

  • Yes, the MCP7940M-I/SN has a battery input pin (VBAT) that allows it to maintain the RTC and SRAM data during power failures.

  • The internal oscillator on the MCP7940M-I/SN has an accuracy of ±2% over the operating temperature range.

  • While the MCP7940M-I/SN has a relatively high accuracy internal oscillator, it may not be suitable for applications that require extremely high accuracy timekeeping. In such cases, an external crystal oscillator may be required.

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