M41T00M6F

Real Time Clock Overview

The M41T00M6F is a low-power serial real-time clock (RTC) IC manufactured by STMicroelectronics. It provides clock/calendar functionality with 8 bytes of general-purpose RAM, configured in binary-coded decimal (BCD) format. The device operates on a supply voltage range of 2 V to 5.5 V and features an I²C bus interface supporting the 400 kHz protocol. It includes automatic switchover circuitry for battery backup, leap year compensation valid until 2100, and software calibration capabilities. The component is housed in an 8-pin SOIC package and supports an operating temperature range from -40°C to +85°C.

Real Time Clock Feature Summary

• Integrated 32.768 kHz oscillator with external crystal support
• I²C serial interface compatible with 400 kHz protocol
• Automatic power-fail detection and battery switchover
• 8-byte SRAM for clock/calendar and user data

Real Time Clock Applications

• Industrial control systems requiring precise timekeeping
• Consumer electronics with battery backup requirements
• Data logging devices needing calendar functions

Real Time Clock Procurement Notes

Verify the specific suffix '6F' against the manufacturer's current datasheet to confirm RoHS compliance and lead-free status. Confirm package dimensions match the 8-SOIC specification (3.90mm width). Ensure the design accounts for the 2V minimum supply voltage during operation.

Real Time Clock Selection Notes

Select this component when an I²C interface is required for timekeeping with minimal pin count. The 8-byte memory is suitable for basic calendar applications but insufficient for large data storage. Compare against the M41T01M6F if additional NVRAM capacity beyond 8 bytes is necessary for the application.

Real Time Clock Part Context

This part belongs to the M41T00M series of real-time clocks. It serves as a successor or variant to older versions like the M41T00M6E, which has been discontinued. The M41T00M6F maintains the same functional core while adhering to modern environmental standards.

Real Time Clock Replacement Considerations

The M41T00M6E is listed as a direct replacement for the discontinued M41T00M6E, though the M41T00M6F is the active version. Verify pin compatibility and software register maps before substituting.