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MCP7940N-I/SN

MCP7940N-I/SN

MCP7940N-I/SN

Microchip Technology

8 Terminations 2.5V 8 Pin MCP7940N Real Time Clocks Alarm, Leap Year, Square Wave Output, SRAM Min 1.8 V V Max 5.5 V V

SOT-23

MCP7940N-I/SN Datasheet PDF

non-compliant

Technical Specifications

Parameter NameValue
TypeParameter
Factory Lead Time 6 Weeks
Lifecycle Status Production (Last Updated: 2 years ago)
Contact PlatingTin
Mount Surface Mount
Mounting Type Surface Mount
Package / Case 8-SOIC (0.154, 3.90mm Width)
Surface MountYES
Number of Pins 8
Supplier Device Package 8-SOIC
Number of Terminals 8
Mounting Style SMD/SMT
Supplier Package SOIC N
Minimum Operating Supply Voltage 1.8 V
Bus Type Serial I2C
Maximum Operating Supply Voltage 5.5 V
Mounting Surface Mount
Dimensions 4.9 x 3.9 x 1.5mm
Package Type SOIC
Maximum Operating Temperature+85 °C
Functions Battery Backup, Calendar
Minimum Operating Temperature -40 °C
MSL -
Manufacturer Microchip
Brand Microchip Technology / Atmel
RoHS Details
Battery Backup Switching Backup Switching
Schedule B 8542390000
Package Tube
Base Product Number MCP7940
Mfr Microchip Technology
Product Status Active
Package Shape RECTANGULAR
Operating Temperature-40°C~85°C
PackagingTube
Series Automotive, AEC-Q100
Published 1998
JESD-609 Code e3
Feature Alarm, Leap Year, Square Wave Output, SRAM
Part StatusActive
Moisture Sensitivity Level (MSL) 1 (Unlimited)
Number of Terminations 8
ECCN Code EAR99
Type Clock/Calendar
Terminal Finish Matte Tin (Sn) - annealed
Max Operating Temperature85 °C
Min Operating Temperature -40 °C
HTS Code8542.39.00.01
Voltage - Supply 1.8V~5.5V
Terminal Position DUAL
Terminal FormGULL WING
Peak Reflow Temperature (Cel) 260
Supply Voltage 2.5V
Terminal Pitch1.27mm
Reach Compliance Code compliant
Time@Peak Reflow Temperature-Max (s) 40
Base Part Number MCP7940N
Pin Count8
JESD-30 Code R-PDSO-G8
Function Clock/Calendar/Alarm/Battery Backup
Qualification StatusNot Qualified
Operating Supply Voltage2.5, 3.3, 5 V
Power Supplies2/5V
Temperature GradeINDUSTRIAL
Interface I2C, 2-Wire Serial
Max Supply Voltage5.5 V
Min Supply Voltage1.8 V
Memory Size64B
uPs/uCs/Peripheral ICs Type TIMER, REAL TIME CLOCK
Logic Function Clock
Seated Height-Max 1.75 mm
Product TypeReal Time Clocks
Max Frequency 400kHz
Screening Level Industrial
Time FormatHH:MM:SS (12/24 hr)
Date FormatYY-MM-DD-dd
Current - Timekeeping (Max) 1.2μA @ 3.3V
Time-Min SECONDS
Interrupt CapabilityY
Voltage - Supply, Battery 1.3V~5.5V
Volatile YES
Information Access Method I2C
Features Alarm, Leap Year, Square Wave Output, SRAM
Product CategoryReal Time Clock
Height 1.5mm
Length 4.9mm
Width 3.9mm
REACH SVHC No SVHC
Radiation HardeningNo
RoHS StatusROHS3 Compliant
Lead Free Lead Free
In-Stock:8909 items

Pricing & Ordering

QuantityUnit PriceExt. Price
1$0.76000$0.76
25$0.70040$17.51
100$0.66950$66.95

MCP7940N-I/SN Product Details

MCP7940N-I/SN Description


MCP7940N-I/SN developed by Microchip Technology is a type of battery-backed I2C Real-Time Clock/Calendar (RTCC) with SRAM. It is specifically designed to track time using internal counters for hours, minutes, seconds, days, months, years, and days of the week. It supports I2C communications up to 400 kHz to ensure usage and configuration. Frequency variance caused by crystal tolerance and temperature can be adjusted based on on-chip digital trimming.



MCP7940N-I/SN Features


Oscillator for 32.768 kHz crystals

Operating voltage range of 1.8V to 5.5V

64-byte battery-backed SRAM

Two-wire serial interface, I2C compatible

Low typical timekeeping current



MCP7940N-I/SN Applications


Data power loss protection

Data record

Time display


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