MCP79410-I/SN Real Time Clock I2C GP RTCC 1Kb EE 64B SRAM ID

1.Feature

Real-Time Clock/Calendar (RTCC), Battery Backed:
- Hours, Minutes, Seconds, Day of Week, Day, Month and Year
- 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
- Alarm output
• 64 Bytes SRAM, Battery Backed
• 1 Kbits EEPROM (128x8):
8 bytes/page- Block/sector write protection- Protect none, 1/4, 1/2 or all of array
• Separate 64-Bit Unique ID:
- User or factory programmable
- Protected area-EUI-48™ or EUI-64™ MAC address- Custom ID programming
• Automatic VCC Switchover to VBAT Backup Supply
• Power-Fail Time-Stamp for Battery Switchover
• Low-Power CMOS Technology:
- Dynamic Current: 400 A max read- Dynamic Current:
3mA max EEPROM write- Battery Backup Current: <700nA @ 1.8V
• 100 kHz and 400 kHz Compatibility
• ESD Protection >4,000V
• More than 1 Million Erase/Write Cycles
• Packages include 8-Lead SOIC, TSSOP, 2x3 TDFN, MSOP
• Pb-Free and RoHS Compliant
Temperature Ranges:
- Industrial (I): -40°C to +85°C

2.Description

The MCP7941X series of low-power Real-Time Clocks(RTC) uses digital timing compensation for an accurateclock/calendar, a programmable output control forversatility, a power sense circuit that automaticallyswitches to the backup supply, and nonvolatile memoryfor data storage. Using a low-cost 32.768 kHz crystal,it tracks time using several internal registers. Forcommunication, the MCP7941X uses the I2C™ bus.The clock/calendar automatically adjusts for monthswith fewer than 31 days, including corrections forleap years. The clock operates in either the 24-houror 12-hour format with an AM/PM indicator andsettable alarm(s) to the second, minute, hour, day ofthe week, date or month. Using the programmableCLKOUT, frequencies of 32.768, 8.192 and 4.096kHz and 1 Hz can be generated from the externalcrystal. Along with the on-board Serial EEPROM and battery-backed SRAM memory, a 64-bit protected space isavailable for a unique ID or MAC address to beprogrammed at the factory or by the end user.The device is fully accessible through the serialinterface while VCC is between 1.8V and 5.5V, but canoperate down to 1.3V for timekeeping and SRAMretention only. The RTC series of devices are available in the standard8-lead SOIC, TSSOP, MSOP and 2x3 TDFN packages

3.Package Types

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