The M41ST87W is a secure serial RTC and NVRAM supervisor implementing a low power 1280-bit CMOS SRAM organized as 160 bytes by 8 bits, featuring both internal and external memory. It includes a built-in 32.768 kHz oscillator, 8 bytes of clock/calendar storage in BCD format, 11 bytes of calibration, alarm, tamper, and square wave functions, plus a 128-byte user RAM. The device detects power failures, switches to battery power automatically, and offers tamper detection, alarm, watchdog timer, square wave output, power reset, and voltage monitoring in a compact 28-pin SOIC package with embedded crystal or external crystal options. It is ideal for timekeeping, security, and tamper-sensitive applications.
Memory: 1280-bit CMOS SRAM (160 bytes x 8 bits), external memory 128 bytes, 8 bytes ROM, 8 bytes serial number, 11 bytes calibration and control data
Power supply: 2.7 to 5.5 V (W version), 4.75 to 5.5 V (Y version).
Clock oscillator: 32.768 kHz crystal, internal or external options depending on package.
Power-fail detection: Monitors voltage via power-fail comparators; switches to battery when Vcc falls below Vprp, with automatic switchover.
Tamper detection: Two independent inputs with programmable modes (normally open/closed), timestamp, RAM clear, and external tamper circuitry.
Alarm: Programmable, with interrupt enable, repeat modes, and event time-stamping.
Watchdog timer: Programmable timeout with multiple resolution options, resets or interrupt output on timeout.
Square wave: Programmable frequency from 1 Hz to 32.768 kHz with open-drain or CMOS output.
Reset inputs: RSTIN1 and RSTIN2, with timing specifications; power-on reset generated internally.
Output driver: Open drain for IRQ/OUT, PFO, RST, and SQW/FT pins, requiring external pull-up resistors.
Package options: Primarily SOX28 (28-lead) with embedded crystal, also SSOP20 (20-lead) with external crystal, compliant with environmental standards.
Buy the Buy STMicroelectronics M41ST87W Part Number MX6TR Online
Purchase the STMicroelectronics M41ST87W MX6TR online today to enhance your security and timekeeping systems. This low power RTC supervisor with integrated tamper detection, alarm, watchdog timer, and square wave output offers reliable, high-accuracy performance in a compact 28-pin SOIC package. Its battery backup support and automatic power-fail switching make it ideal for secure environments. Experience fast delivery, easy ordering, and the latest device technology to ensure your applications meet the highest standards of security and precision.
Order your STMicroelectronics M41ST87W MX6TR today and ensure your projects benefit from reliable RTC, secure memory, tamper detection, and advanced security features.
Frequently Asked Questions
Where can I buy STMICROELECTRONICS M41ST87WMX6TR?
You can click on the BUY or RFQ button to purchase M41ST87WMX6TR from an authorized STMICROELECTRONICS distributor.
How do I troubleshoot issues or seek technical support for part M41ST87WMX6TR?