Microchip MCP7940N-E/SN

Manufacturer No:

MCP7940N-E/SN

Manufacturer:

Microchip

Package:

8-SOIC (0.154, 3.90mm Width)

Description:

Battery Backed RTCC

Quantity:

Delivery:

Payment:

In Stock :Available

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MCP7940N-E/SN information

Microchip MCP7940N-E/SN technical specifications, attributes, parameters and parts with similar specifications to Microchip MCP7940N-E/SN.

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

Download datasheets and manufacturer documentation for Microchip MCP7940N-E/SN.

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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