The MCP79400T-I/ST is a battery-backed I¬=C real-time clock/calendar designed for precise timekeeping in various applications. 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 formats and is optimized for use with 32.768 kHz crystals. This part includes on-chip digital trimming for frequency calibration, dual programmable alarms, and a versatile output pin that can be configured for clock output, alarm output, or general-purpose output. It operates within a wide voltage range of 1.8V to 5.5V, with a low typical timekeeping current of 1.2 ¬µA at 3.3V and 925 nA during battery backup mode. The automatic switchover to battery backup ensures continuous operation during power interruptions. Additionally, the MCP79400T-I/ST includes 64 bytes of battery-backed SRAM and a protected EEPROM area, which requires a robust write unlock sequence for data integrity. The device is compatible with I¬=C communication at clock rates up to 400 kHz and operates within an industrial temperature range of -40¬8C to +85¬8C. It 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 I²C, 2-Wire Serial 8-TSSOP (0.173"", 4.40mm Width)"
Manufacturer: Microchip Technology
Win Source Part Number: 926738-MCP79400T-I/S
Operating Temperature Range: -40°C ~ 85°C
Features: Real Time Clock (RTC) IC Clock/Calendar 64B I²C, 2-Wire Serial 8-TSSOP (0.173", 4.40mm Width)
Package: 8-TSSOP (0.173", 4.40mm Width)
Package: Reel - TR
Mounting: Surface Mount
Family Name: MCP79400
Categories: Integrated Circuits (ICs)
Case / Package: 8-TSSOP
ECCN: EAR99
Popularity: High
Fake Threat In the Open Market: 51 pct.
Supply and Demand Status: Balance
Quantity per package: 2500
MSL Level: 1 (Unlimited)
Estimated Pruduction Lead Time: 51 Weeks
REACH Status: REACH Unaffected
HTSUS: 8542.39.0001
Real Time Clock (RTC) IC Clock/Calendar 64B I²C, 2-Wire Serial 8-TSSOP (0.173", 4.40mm Width)
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:TSSOP; No. of Pins:8Pins; Product Range:- RoHS Compliant: Yes
IC RTC CLK/CALENDAR I2C 8-TSSOP
IC RTC CLK/CALENDAR I2C 8TSSOP
| DigiKey | Win Source Electronics | Quarktwin Technology Ltd. | Newark, An Avnet Company | Lingto Electronic Limited | Shenzhen Shengyu Electronics Technology Limited | |
|---|---|---|---|---|---|---|
| Product Category | IC Clocks | IC Clocks | IC Clocks | IC Clocks | IC Clocks | IC Clocks |
| Product Number | MCP79400T-I/ST-ND | 926738-MCP79400T-I/ST | MCP79400T-I/ST | 85R1758 | MCP79400T-I/ST | MCP79400T-I/ST |
| Product Name | Real Time Clocks | Clock/Timing - Clock/Timing - Real Time Clocks - MCP79400T-I/ST | Real Time Clocks | Real Time Clock/calendar, -40 To 85Deg C; Date Format Microchip | Clock/Timing - Real Time Clocks | Integrated Circuits (ICs) - Clock-Timing - Real Time Clocks |
| Device Type | Real Time Clock | Real Time Clock | Real Time Clock | Calendar, Clock; Real Time Clock | Real Time Clock | Clock/Calendar; Real Time Clock |
| Package Type | Surface Mount; TSSOP; "8-TSSOP (0.173"", 4.40mm Width)" | Surface Mount; 8-TSSOP | Surface Mount; SSOP; 8-TSSOP (0.173\", 4.40mm Width) | TSSOP | Surface Mount; Surface Mount | |
| Supply Voltage | 1.8 to 5.5 volts | 1.8 to 5.5 volts | 1.8 to 5.5 volts |
