Manufacturer Part #
MCP7940N-I/SN
MCP7940 Series 64 Byte I2C Surface Mount Real-Time Clock/Calendar - SOIC-8
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| Mfr. Name: | Microchip | ||||||||||
| Standard Pkg: | Product Variant Information section Available PackagingPackage Qty:100 per Tube Package Style:SOIC-8 Mounting Method:Surface Mount | ||||||||||
| Date Code: | 2336 | ||||||||||
Microchip MCP7940N-I/SN - Product Specification
Shipping Information:
ECCN:
PCN Information:
Microchip has released a new Product Documents for the MCP7940N Battery-Backed I2C Real-Time Clock/Calendar with SRAM of devices.Description of Change:- Updated Data Sheet for MCP7940N I2C RTCC to include Automotive part numbers and other fixes.- Updated SOIC, TDFN and TSSOP package drawings.- Replaced terminology �Master� and �Slave� with �Host� and �Client� respectively. Reason for Change: To Improve Productivity Date Document Changes Effective: 08 Apr 2022
Revision History:February 7, 2022: Issued final notification.April 6, 2022: Re-issuance of PCN to update the affected CPN list. Update the estimated first shipment date on March 30, 2022.Description of Change:Qualification of 3280 die attach material and new lead frame design for selected products available in 8L SOIC package assembled at MMT assembly site.Pre and Post Change Summary: See attachedImpacts to Data Sheet:NoneChange ImpactNoneReason for Change:To improve productivity by qualifying new lead frame design and die attach material.Change Implementation Status:In ProgressEstimated First Ship Date:March 30, 2022 (date code: 2214)Note: Please be advised that after the estimated first ship date customers may receive pre and post change parts.Time Table Summary: See attached
CCB 4993 Final Notice: Qualification of 3280 die attach material and new lead frame design for selected products available in 8L SOIC package assembled at MMT assembly site.PCN Type: Manufacturing ChangeDescription of Change:Qualification of 3280 die attach material and new lead frame design for selected products available in 8L SOIC package assembled at MMT assembly site.Impacts to Data Sheet: NoneChange Impact: NoneReason for Change:To improve productivity by qualifying new lead frame design and die attach material.Change Implementation Status: In ProgressEstimated First Ship Date: February 28, 2022 (date code: 2210)
NOTICE WITHDRAWALPCN Status: Cancellation of Notification.Reason for Change:Microchip has decided to not qualify a new lead frame design for selected products available in 8L SOIC package using 8390A die attach and palladium coated copper with gold flash (CuPdAu) bond wire material assembled at MMT assembly site.Revision History:February 09, 2021: Issued initial notification.February 01, 2022: Issued cancellation notification.
Part Status:
Microchip MCP7940N-I/SN - Technical Attributes
| Interface Type: | I2C |
| Clock Frequency-Max: | 400kHz |
| Supply Voltage-Nom: | 1.3V to 5.5V |
| Package Style: | SOIC-8 |
| Mounting Method: | Surface Mount |
Features & Applications
The MCP7940N-I/SN is a Low-Power, Low-Cost I2C Real-Time Clock, uses digital timing compensation for an accurate clock, a programmable output control for versatility, and a power sense circuit that automatically switches to the backup supply.
It tracks time using several internal registers. For communication, it uses the I2C bus. The device is fully accessible through the serial interface while VCC is between 1.8 V and 5.5 V, but can operate down to 1.3 V for timekeeping and SRAM retention only.
Features:
- Real-Time Clock (RTC), Battery Backed
- Dual alarm with single output
- On-Chip digital trimming/calibration
- Range -127 to +127 ppm
- Resolution 1 ppm
- Programmable open-drain output control
- CLKOUT with 4 selectable frequencies
- 64 Bytes SRAM, battery backed
- Power-fail time-stamp for Battery Switchover
- Low power CMOS technology
- 100 kHz and 400 kHz compatibility
Available Packaging
Package Qty:
100 per Tube
Package Style:
SOIC-8
Mounting Method:
Surface Mount