STMicroelectronics M41T82
Serial I2C bus real-time clock
| Part No. | M41T82 |
|---|---|
| Datasheet | M41T82 Download |
| Manufacturer |  STMicroelectronics |
| Description | Serial I2C bus real-time clock |
| Buy | Stock & Price |
FEATURES
● Ultra-low battery supply current of 365 nA● Factory-calibrated accuracy of ±5 ppm typical after 2 reflows (SOX18) – Much better accuracies 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 (fixed reference) – M41T83S: VCC = 3.00 V to 5.50 V – M41T83R: VCC = 2.70 V to 5.50 V – M41T83Z: VCC = 2.38 V to 5.50 V
● Serial interface supports I2C bus (400 kHz protocol)
● Programmable alarm with interrupt function (valid even during battery backup mode) Datasheet - production data
● Optional 2nd programmable alarm available
● Square wave output defaults to 32 KHz on power-up (M41T83 only)
● 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...
