MCP79412 Series

Battery-Backed I2C Real-Time Clock/Calendar with Pre-Programmed EUI-64™ MAC ID

Catalog

Battery-Backed I2C Real-Time Clock/Calendar with Pre-Programmed EUI-64™ MAC ID

Part	Memory Size	Memory Size (Option 2)	Memory Size (Option 1)	Memory Size	Type	Time Format	Voltage - Supply (Maximum)	Voltage - Supply (Minimum)	Package Width	Package Name	Package Length	Features	Date Format	Voltage - Supply, Battery (Maximum)	Voltage - Supply, Battery (Minimum)	Interface	Mounting Type	Current - Timekeeping (Max)	Operating Temperature (Min)	Operating Temperature (Max)	Package / Case
Microchip Technology MCP79412T-I/MS	1Kb 64B	1 Kb	64 B	1 Kbit 64 B	Clock/Calendar	HH:MM:SS (12/24 hr)	5.5 V	1.8 V	3 mm	8-MSOP 8-TSSOP 8-MSOP	0.118 in	Alarm Leap Year Square Wave Output SRAM Unique ID	YY-MM-DD-dd	5.5 V	1.3 V	2-Wire Serial I2C	Surface Mount	1.2 µA	-40 °C	85 °C
Microchip Technology MCP79412-I/MS	1Kb 64B	1 Kb	64 B	1 Kbit 64 B	Clock/Calendar	HH:MM:SS (12/24 hr)	5.5 V	1.8 V	3 mm	8-MSOP 8-TSSOP 8-MSOP	0.118 in	Alarm Leap Year Square Wave Output SRAM Unique ID	YY-MM-DD-dd	5.5 V	1.3 V	2-Wire Serial I2C	Surface Mount	1.2 µA	-40 °C	85 °C
Microchip Technology MCP79412-I/SN	1Kb 64B	1 Kb	64 B	1 Kbit 64 B	Clock/Calendar	HH:MM:SS (12/24 hr)	5.5 V	1.8 V	3.9 mm	8-SOIC	0.154 in	Alarm Leap Year Square Wave Output SRAM Unique ID	YY-MM-DD-dd	5.5 V	1.3 V	2-Wire Serial I2C	Surface Mount	1.2 µA	-40 °C	85 °C
Microchip Technology MCP79412-I/ST	1Kb 64B	1 Kb	64 B	1 Kbit 64 B	Clock/Calendar	HH:MM:SS (12/24 hr)	5.5 V	1.8 V	4.4 mm	8-TSSOP	0.173 in	Alarm Leap Year Square Wave Output SRAM Unique ID	YY-MM-DD-dd	5.5 V	1.3 V	2-Wire Serial I2C	Surface Mount	1.2 µA	-40 °C	85 °C
Microchip Technology MCP79412T-I/MNY	1Kb 64B	1 Kb	64 B	1 Kbit 64 B	Clock/Calendar	HH:MM:SS (12/24 hr)	5.5 V	1.8 V	3 mm	8-TDFN	2 mm	Alarm Leap Year Square Wave Output SRAM Unique ID	YY-MM-DD-dd	5.5 V	1.3 V	2-Wire Serial I2C	Surface Mount	1.2 µA	-40 °C	85 °C	8-WFDFN Exposed Pad
Microchip Technology MCP79412T-I/ST	1Kb 64B	1 Kb	64 B	1 Kbit 64 B	Clock/Calendar	HH:MM:SS (12/24 hr)	5.5 V	1.8 V	4.4 mm	8-TSSOP	0.173 in	Alarm Leap Year Square Wave Output SRAM Unique ID	YY-MM-DD-dd	5.5 V	1.3 V	2-Wire Serial I2C	Surface Mount	1.2 µA	-40 °C	85 °C
Microchip Technology MCP79412T-I/SN	1Kb 64B	1 Kb	64 B	1 Kbit 64 B	Clock/Calendar	HH:MM:SS (12/24 hr)	5.5 V	1.8 V	3.9 mm	8-SOIC	0.154 in	Alarm Leap Year Square Wave Output SRAM Unique ID	YY-MM-DD-dd	5.5 V	1.3 V	2-Wire Serial I2C	Surface Mount	1.2 µA	-40 °C	85 °C

Catalog

Battery-Backed I2C Real-Time Clock/Calendar with Pre-Programmed EUI-64™ MAC ID

Description

The MCP79412 general purpose I2C™Compatible real-time clock/calendar (RTCC) is highly integrated with nonvolatile memory and advanced features normally found in higher priced devices. These features include a battery switchover circuit for backup power, a timestamp to log power failures and digital trimming for accuracy. Using a low-cost 32.768 kHz crystal or other clock source, time is tracked in either a 12-hour or 24-hour format with an AM/PM indicator and timing to the second, minute, hour, day of the week, day, month and year. As an interrupt or wakeup signal, a multifunction open drain output can be programmed as an Alarm Out or as a Clock Out that supports 4 selectable frequencies. In addition, non-volatile memory is included along with a Unique ID in a locked section of EEPROM that is factory programmed with an EUI-48 MAC Address.