Overview
The M41T00SC64MY6F, produced by STMicroelectronics, is a low-power serial real-time clock (RTC) combined with a 64Kbit (8192 x 8) EEPROM. This integrated circuit features a built-in 32.768 kHz oscillator that is crystal-controlled, ensuring high accuracy in timekeeping. The device is designed to operate within a supply voltage range of 2.7 to 5.5 V and supports an I²C bus interface with a 400 kHz protocol. It includes automatic power-fail detect and switch-over circuitry, making it suitable for applications requiring reliable timekeeping even during power failures.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Supply Voltage (VCC) | 2.7 to 5.5 | V |
| Ambient Operating Temperature (TA) | -40 to 85 | °C |
| Supply Current (ICC1) | 300 | µA |
| Supply Current (Standby) (ICC2) | 70 | µA |
| Battery Supply Current | 0.6 | µA |
| Oscillator Frequency | 32.768 kHz | - |
| I²C Clock Frequency | 0 to 400 kHz | - |
| EEPROM Size | 64 Kbit (8192 x 8) | - |
| Package Type | 18-lead SOIC with embedded crystal | - |
Key Features
- Counters for seconds, minutes, hours, day, date, month, year, and century in BCD format.
- Software clock calibration and automatic leap year compensation.
- Automatic power-fail detect and switch-over circuitry to battery supply.
- Ultra-low battery supply current of 0.6 µA.
- Two-wire I²C serial interface supporting 400 kHz protocol.
- 64 Kbit (8192 x 8) EEPROM with more than 1 million erase/write cycles and over 40 years of data retention.
- Operating temperature range of -40 to 85 °C.
- Low operating current of 300 µA and standby current of 70 µA.
- Embedded crystal package for accurate timekeeping.
Applications
- Smart home devices and IoT applications requiring precise timekeeping.
- Industrial control systems and automation.
- Medical devices and healthcare equipment.
- Automotive systems, including navigation and infotainment.
- Consumer electronics such as set-top boxes, DVRs, and smart appliances.
Q & A
- What is the operating voltage range of the M41T00SC64MY6F?
The operating voltage range is 2.7 to 5.5 V.
- What type of interface does the M41T00SC64MY6F use?
The device uses a two-wire I²C serial interface supporting a 400 kHz protocol.
- What is the typical battery supply current of the M41T00SC64MY6F?
The typical battery supply current is 0.6 µA.
- Does the M41T00SC64MY6F have built-in EEPROM?
- What is the operating temperature range of the M41T00SC64MY6F?
The operating temperature range is -40 to 85 °C.
- How does the M41T00SC64MY6F handle power failures?
The device has automatic power-fail detect and switch-over circuitry to a battery supply.
- What is the calibration accuracy of the M41T00SC64MY6F's oscillator?
The oscillator is factory calibrated to ± 5 ppm accuracy at 25°C.
- What is the data retention time for the EEPROM in the M41T00SC64MY6F?
The data retention time for the EEPROM is over 40 years.
- Is the M41T00SC64MY6F RoHS compliant?
- What type of packaging does the M41T00SC64MY6F come in?
The device is supplied in an 18-lead SOIC package with an embedded crystal.
