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M41T93ZMY6F
ID: 209800
Serial SPI bus real-time clock (RTC) with battery switchover, embedded crystal 32768 Hz, SOX18, STM, RoHS
M41T93ZMY6F
Serial SPI bus real-time clock (RTC) with battery switchover, embedded crystal 32768 Hz, SOX18, STM, RoHS
The M41T93ZMY6F is a low-power serial SPI bus real-time clock (RTC) with a built-in 32.768 kHz oscillator. Eight bytes of the register map are used for the clock/calendar function and are configured in binary coded decimal (BCD) format. An additional 17 bytes of the register map provide status/control of the two alarms, watchdog, 8-bit counter, and square wave functions. An additional seven bytes are made available as user SRAM.
Addresses and data are transferred serially via a serial SPI bus-compatible interface. The built-in address register is incremented automatically after each WRITE or READ data byte. The M41T93ZMY6F has a built-in power sense circuit which detects power failures and automatically switches to the battery supply when a power failure occurs. The energy needed to sustain the clock operations can be supplied by a small lithium button battery when a power failure occurs.
Serial SPI bus real-time clock (RTC) with battery switchover, embedded crystal 32768 Hz, SOX18, STM, RoHS
The M41T93ZMY6F is a low-power serial SPI bus real-time clock (RTC) with a built-in 32.768 kHz oscillator. Eight bytes of the register map are used for the clock/calendar function and are configured in binary coded decimal (BCD) format. An additional 17 bytes of the register map provide status/control of the two alarms, watchdog, 8-bit counter, and square wave functions. An additional seven bytes are made available as user SRAM.
Addresses and data are transferred serially via a serial SPI bus-compatible interface. The built-in address register is incremented automatically after each WRITE or READ data byte. The M41T93ZMY6F has a built-in power sense circuit which detects power failures and automatically switches to the battery supply when a power failure occurs. The energy needed to sustain the clock operations can be supplied by a small lithium button battery when a power failure occurs.
Features:
- Ultra-low battery supply current of 365 nA
- Factory calibrated accuracy ±5 ppm typical after 2 reflows (SOX18) (much better accuracies are achievable using built-in programmable analog and digital calibration circuits)
- 2.0 V to 5.5 V clock operating voltage
- Counters for tenths/hundredths of seconds, seconds, minutes, hours, day, date, month, year, and century
- Automatic switchover and reset output circuitry: VCC= 2.38 V to 5.50 V
- Compatible with SPI bus serial interface (supports SPI mode 0 [CPOL = 0, CPHA = 0])
- Programmable alarm with interrupt function (valid even during battery backup mode)
- Optional 2ndprogrammable alarm available
- Square wave output (defaults to 32 KHz on power-up)
- RESET (
RST ) output - Watchdog timer
- Programmable 8-bit counter/timer
- 7 bytes of battery-backed user SRAM
- Battery low flag
- Low operating current of 80 µA
- Oscillator stop detection
- Battery or supercapacitor backup
- Operating temperature of –40 °C to +85 °C
- Package: 18-lead embedded crystal SOIC
209800
Manufacturer BTC Korporacja sp. z o. o. Lwowska 5 05-120 Legionowo Poland sprzedaz@kamami.pl 22 767 36 20
Responsible person BTC Korporacja sp. z o. o. Lwowska 5 05-120 Legionowo Poland sprzedaz@kamami.pl 22 767 36 20
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Serial SPI bus real-time clock (RTC) with battery switchover, embedded crystal 32768 Hz, SOX18, STM, RoHS