The M41T81SMY6F is a real-time clock (RTC) integrated circuit designed for accurate timekeeping in various applications. It features counters for tenths/hundredths of seconds, seconds, minutes, hours, day, date, month, year, and century. The device operates with a 32 KHz crystal oscillator that includes integrated load capacitance, ensuring stability and compatibility with high crystal series resistance. This RTC supports a serial interface compliant with the I2C bus protocol at 400 kHz, making it suitable for integration into systems requiring efficient communication. It operates within a voltage range of 2.0 to 5.5 V and has an ultra-low battery supply current of 0.6 ¬µA, which is advantageous for battery-powered applications. The M41T81SMY6F also includes features such as oscillator stop detection, programmable alarms, and a watchdog timer, enhancing its functionality in time-sensitive applications. The device is rated for an operating temperature range of -40 to 85 ¬8C, making it suitable for a variety of environmental conditions. It is available in both 8-lead SOIC and 18-lead embedded crystal SOIC package options, providing flexibility in design. Overall, the M41T81SMY6F is a robust choice for engineers seeking a reliable RTC solution for their projects.
IC RTC CLK/CALENDAR I2C 18-SOIC
Manufacturer: STMicroelectronics
Win Source Part Number: 785047-M41T81SMY6F
Packaging: Reel package
Type: Clock/Calendar
Operating Temperature Range: -40°C ~ 85°C
Features: Alarm, Leap Year, Square Wave Output, Watchdog Timer
Package: 18-SOX, 18-SOIC with Crystal (7.5mm Width)
Mounting: SMD
Operating Supply Voltage: 2.7 V ~ 5.5 V
Interface: I2C, 2-Wire Serial
Date Format: YY-MM-DD-dd
Voltage - Supply, Battery: 2 V ~ 3.5 V
Family Name: M41T81
Categories: Integrated Circuits (ICs)
Manufacturer Package: 18-SOX
Current - Timekeeping (Maximum): 100μA @ 2.7V ~ 5.5V
Alternative Parts (Cross-Reference): M41T81SMY6E; M41T81SM6E; M41T81SM6F; M41T81SMY6T ;
Introduction Date: September 08, 2004
ECCN: EAR99
Country of Origin: Malaysia
Estimated EOL Date: 2027
Popularity: Medium
Fake Threat In the Open Market: 48 pct.
Supply and Demand Status: Limited
Real Time Clock (RTC) IC Clock/Calendar I²C, 2-Wire Serial 18-SOX, 18-SOIC with Crystal (7.5mm Width)
Real Time Clock (RTC) IC Clock/Calendar I²C, 2-Wire Serial 18-SOX, 18-SOIC with Crystal (7.5mm Width)
Real Time Clock (RTC) IC Clock/Calendar I²C, 2-Wire Serial 18-SOX, 18-SOIC with Crystal (7.5mm Width)
ALARM RTC, 20B, I2C, 5.5V, SOIC-18; Date Format:Day; Date; Month; Year; Century; Clock Format:HH:MM:SS:hh; Clock IC Type:Alarm RTC; Supply Voltage Min:2.7V; Supply Voltage Max:5.5V; Clock IC Case Style:SOIC; No. of Pins:18Pins; MSL:-RoHS Compliant: Yes
Real Time Clock (RTC) IC Clock/Calendar I²C, 2-Wire Serial 18-SOX, 18-SOIC with Crystal (7.5mm Width)
IC RTC CLK/CALENDAR I2C 18-SOIC
IC RTC CLK/CALENDAR I2C 18SOX
| ODG (Origin Data Global) | Win Source Electronics | DigiKey | Newark, An Avnet Company | Quarktwin Technology Ltd. | Lingto Electronic Limited | Shenzhen Shengyu Electronics Technology Limited | |
|---|---|---|---|---|---|---|---|
| Product Category | IC Clocks | IC Clocks | IC Clocks | IC Clocks | IC Clocks | IC Clocks | IC Clocks |
| Product Number | M41T81SMY6F | 785047-M41T81SMY6F | 497-6157-2-ND | 45AC7407 | M41T81SMY6F | M41T81SMY6F | M41T81SMY6F |
| Product Name | Real Time Clocks | Clock/Timing - Clock/Timing - Real Time Clocks - M41T81SMY6F | Real Time Clocks | Alarm Rtc, 20B, I2C, 5.5V, Soic-18; Date Format Stmicroelectronics | Real Time Clocks | Clock/Timing - Real Time Clocks | Integrated Circuits (ICs) - Clock-Timing - Real Time Clocks |
| Device Type | Clock/Calendar; Real Time Clock | Real Time Clock | Real Time Clock | Alarm RTC; Real Time Clock | Real Time Clock | Real Time Clock | Clock/Calendar; Real Time Clock |
| Package Type | Surface Mount; Surface Mount | Surface Mount | Surface Mount; SOIC; 18-SOX, 18-SOIC with Crystal (7.5mm Width) | SOIC | Surface Mount; SOIC; 18-SOX, 18-SOIC with Crystal (7.5mm Width) | Surface Mount; Surface Mount | |
| Supply Voltage | 2.7 to 5.5 volts | 2 to 5.5 volts | 2.7 to 5.5 volts | 2.7 to 5.5 volts | 2.7 to 5.5 volts |
