Overview
The M41T93SQA6F is a low-power serial SPI bus real-time clock (RTC) designed by STMicroelectronics. This component is tailored to meet the stringent timekeeping requirements of various applications, including industrial automation, consumer electronics, and medical devices. It features a built-in 32.768 kHz oscillator, which can be external crystal-controlled for the QFN16 package or embedded crystal for the SOX18 package. The RTC provides high accuracy and stability, ensuring precise timekeeping across different environmental conditions.
Key Specifications
| Parameter | Value |
|---|---|
| Supply Voltage Min | 2.38 V |
| Supply Voltage Max | 5.5 V |
| Operating Temperature Min | -40.0°C |
| Operating Temperature Max | 85.0°C |
| Package Name | VFQFPN 16 4x4x1.0 |
| RoHS Compliance | Ecopack2 |
| Grade | Industrial |
| Oscillator Frequency | 32.768 kHz |
| Interface | SPI bus-compatible |
| Power Consumption | 400 nA (typical) |
| NVRAM Size | 7 bytes |
Key Features
- High accuracy clock with seconds, minutes, hours, day, date, month, year, and century in 24-hour BCD format.
- Ultra-low battery supply current of 365 nA.
- Factory calibrated accuracy ±5 ppm typical after 2 reflows (SOX18 package).
- Programmable alarm with interrupt function, even during battery backup mode.
- Square wave output (defaults to 32 KHz on power-up).
- RESET (RST) output and watchdog timer.
- Programmable 8-bit counter/timer.
- Battery low flag and oscillator stop detection.
- Battery or supercapacitor backup capability.
Applications
The M41T93SQA6F is versatile and finds applications in various industries, including:
- Industrial automation.
- Data loggers.
- Consumer electronics.
- Automotive systems.
- Medical devices.
- Embedded systems requiring RTC functionality.
Q & A
- What is the M41T93SQA6F?
The M41T93SQA6F is a low-power serial SPI bus real-time clock (RTC) with a built-in 32.768 kHz oscillator. - What are the operating voltage and temperature ranges of the M41T93SQA6F?
The operating voltage range is 2.38 V to 5.5 V, and the operating temperature range is -40°C to 85°C. - What interface does the M41T93SQA6F use?
The M41T93SQA6F uses a SPI bus-compatible interface. - What is the power consumption of the M41T93SQA6F?
The power consumption is typically 400 nA. - Does the M41T93SQA6F have battery backup capability?
Yes, it has automatic switchover to battery supply during power failures. - What are the key features of the M41T93SQA6F?
Key features include high accuracy clock, programmable alarms, square wave output, and a watchdog timer. - In which industries is the M41T93SQA6F commonly used?
It is commonly used in industrial automation, consumer electronics, automotive systems, and medical devices. - What is the package type of the M41T93SQA6F?
The package type is VFQFPN 16 4x4x1.0. - Is the M41T93SQA6F RoHS compliant?
Yes, it is RoHS compliant with an Ecopack2 rating. - How much user SRAM does the M41T93SQA6F provide?
The M41T93SQA6F provides 7 bytes of battery-backed user SRAM.
