Microchip MCP7940N-E/MS
Manufacturer No:
MCP7940N-E/MS
Manufacturer:
Microchip
Package:
8-TSSOP, 8-MSOP (0.118, 3.00mm Width)
Description:
Battery Backed RTCC
Quantity:
In Stock :8677
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Shipped from：HK Warehouse
Expected Shipping：Sun, May 31 - Mon, Jun 1, 2026
Lead Time：Inquire about availability
Date Code：Within 2 Years
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MCP7940N-E/MS Information
Microchip MCP7940N-E/MS technical specifications, attributes, parameters and parts with similar specifications to Microchip MCP7940N-E/MS.
- Type
- Parameter
- EEPROM Data Memory Bytes
- 0
- Unique ID with MAC Address
- None
- User SRAM (Bytes)
- 64
- Max Interface Speed
- 400 kHz
- Minimum Clock Count
- 1 sec
- Pin Count
- 8
- Temp Range Max (°C (degrees Celsius))
- 125
- Temp Range Min (°C (degrees Celsius))
- -40
- Type
- Parameter
Download datasheets and manufacturer documentation for Microchip MCP7940N-E/MS.
Data Sheets:
Application Notes:
The MCP7940N series of low-power Real-Time Clocks (RTC) uses digital timing compensation for an accurate clock/calendar, a programmable output control for versatility, and a power sense circuit that automatically switches to the backup supply. Using a low-cost 32.768
kHz crystal, it tracks time using several internal registers.
For communication, the MCP7940N uses the I2C™ bus. The clock/calendar automatically adjusts for months with fewer than 31 days, including corrections for leap years. The clock operates in either the 24-hour or 12-hour format with an AM/PM indicator and settable alarm(s) to the second, minute, hour, day of the week, date or month. Using the programmable CLKOUT, frequencies of 32.768, 8.192 and 4.096
kHz and 1 Hz can be generated from the external crystal.
The device is fully accessible through the serial interface while VCC is between 1.8V and 5.5V, but can operate down to 1.3V for timekeeping and SRAM retention only.
- Battery-Backed Real-Time Clock/Calendar (RTCC)
- Hours, Minutes, Seconds, Day of Week, Day, Month, Year
- Leap year compensated to 2399
- 12/24 hour modes
- On-Chip Digital Trimming/Calibration
- 1 PPM Resolution
- ±129 PPM Range
- Dual Programmable Alarms
- Versatile Output Pin
- Clock output with selectable frequency
- Alarm output
- General Purpose output
- Time logged on switchover to and from Battery Backup
- 64 Bytes Battery-Backed SRAM
- I2C Clock Frequency up to 400 kHz
- Operating Voltage 1.8V to 5.5V
- Backup Voltage 1.3V to 5.5V
- Low Typical Timekeeping Current
- Automatic Switchover to Battery Backup
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12.28 M
Listed Part Number
3,000+
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In-stock SKU
15,000+
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