The MCP79410/MCP79411/MCP79412 series is a battery-backed I¬=C real-time clock/calendar designed for industrial applications with an operating temperature range of -40¬8C to +85¬8C. It features a comprehensive timekeeping capability, tracking hours, minutes, seconds, day of the week, day, month, and year, with leap year compensation up to the year 2399. The device supports both 12-hour and 24-hour clock formats and is optimized for use with 32.768 kHz crystals. This series includes dual programmable alarms and a versatile output pin that can be configured for clock output, alarm output, or general-purpose output. The MCP7941X also logs power-fail events, ensuring accurate timekeeping and SRAM content retention during power loss. The device operates within a voltage range of 1.8V to 5.5V, with a low typical timekeeping current of 1.2 ¬µA at 3.3V when powered from VCC, and 925 nA at 3.0V when powered from the backup battery. It includes 64 bytes of battery-backed SRAM and 1 Kbit of EEPROM memory, with features such as software write protection and a robust unlock sequence for critical data storage. The MCP7941X series is available in multiple package types, including 8-lead SOIC, MSOP, TSSOP, and 2x3 TDFN, making it suitable for various design requirements.
"Real Time Clock (RTC) IC Clock/Calendar 64B, 1Kb I²C, 2-Wire Serial 8-TSSOP, 8-MSOP (0.118"", 3.00mm Width)"
Manufacturer: Microchip Technology
Win Source Part Number: 1321622-MCP79412T-I/
Category: Integrated Circuits (ICs)>Clock/Timing>R
Packaging: Reel - TR
Type: Clock/Calendar
Features: Alarm, Leap Year, Square Wave Output, SRAM, Unique ID
Standard Package: 2,500
Mounting: Surface Mount
Memory Size: 64B, 1Kb
Interface: I2C, 2-Wire Serial
Date Format: YY-MM-DD-dd
Voltage - Supply, Battery: 1.3V ~ 5.5V
Current - Timekeeping (Max): 1.2µA @ 3.3V
Voltage - Supply: 1.8V ~ 5.5V
Supplier Device Package: 8-MSOP
Temperature Range - Operating: -40°C ~ 85°C
Case / Package: 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
ECCN: EAR99
Fake Threat In the Open Market: 69
MSL Level: 1 (Unlimited)
REACH Status: REACH Unaffected
HTSUS: 8542.39.0001
Base Product Number: MCP79412
RoHS Status: ROHS3 Compliant
Real Time Clock (RTC) IC Clock/Calendar 64B, 1Kb I²C, 2-Wire Serial 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
IC RTC CLK/CALENDAR I2C 8MSOP
IC RTC CLK/CALENDAR I2C 8-MSOP
REAL TIME CLOCK/CALENDAR, -40 TO 85DEG C; Date Format:YY-MM-DD-dd; Clock Format:HH:MM:SS; Clock IC Type:Calendar, Clock; Supply Voltage Min:1.8V; Supply Voltage Max:5.5V; Clock IC Case Style:MSOP; No. of Pins:8Pins; Product Range:- RoHS Compliant: Yes
| DigiKey | Win Source Electronics | Quarktwin Technology Ltd. | Shenzhen Shengyu Electronics Technology Limited | Lingto Electronic Limited | Newark, An Avnet Company | |
|---|---|---|---|---|---|---|
| Product Category | IC Clocks | IC Clocks | IC Clocks | IC Clocks | IC Clocks | IC Clocks |
| Product Number | MCP79412T-I/MS-ND | 1321622-MCP79412T-I/MS | MCP79412T-I/MS | MCP79412T-I/MS | MCP79412T-I/MS | 85R1784 |
| Product Name | Real Time Clocks | Integrated Circuits (ICs) - Clock/Timing - Real Time Clocks | Real Time Clocks | Integrated Circuits (ICs) - Clock-Timing - Real Time Clocks | Clock/Timing - Real Time Clocks | Real Time Clock/calendar, -40 To 85Deg C; Date Format Microchip |
| Device Type | Real Time Clock | Real Time Clock | Real Time Clock | Clock/Calendar; Real Time Clock | Real Time Clock | Calendar, Clock; Real Time Clock |
| Package Type | Surface Mount; TSSOP; "8-TSSOP, 8-MSOP (0.118"", 3.00mm Width)" | Surface Mount; 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) | Surface Mount; SSOP; 8-TSSOP, 8-MSOP (0.118\", 3.00mm Width) | Surface Mount; Surface Mount | MSOP | |
| Supply Voltage | 1.8 to 5.5 volts | 1.3 to 5.5 volts | 1.8 to 5.5 volts | 1.8 to 5.5 volts |
