Temperature Compensated RTC Module, +/-3.5ppm -40°C to 85°C
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The RT3A and RT3AQ are temperature compensated real- time clock modules with integrated crystal, eliminating the need for an external 32.768 kHz crystal. The device supports clock/calendar, programmable alarms, fixed cycle timer, and a programmable square-wave output. Address and data are transferred serially through an I2C bus.
With integrated DTCXO, the device supports up to +/-3.5ppm clock accuracy for -40°C to +85°C temperature range and +/- 10ppm for -40°C to +125°C temperature range.
The device also has a built-in power-sense circuit that detects power failures and automatically switches to the backup supply, maintaining time, date, and alarm and timer operation. RT3A is industrial grade and RT3AQ is automotive grade. Both devices are available in a small 3225 ceramic package.
Compliance (Only Automotive Supports PPAP) | Standard |
---|---|
Time Display | 12,24 |
Interface | I2C |
Alarm Interrupt | 1 |
Battery Backup | Yes |
Clock Calibration | NA |
Additional Technical Documents are available upon request:
Application information, Evaluation board, and Other technical documents