RT3A3241N3

Description

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.

Feature(s)

• Real-Time Clock Module (RTC) for Time (Seconds, Minutes and Hours) and Calendar (Day, Date, Month and Year with Leap-Year Compensation Valid Up to 2100)
• Temperature Compensated with Integrated Crystal
  • +/-3.5ppm -40°C to 85°C (Equivalent to 9sec/Month Deviation), RT3A3241N3/Q3
  • +/-5ppm -40°C to +85°C (Equivalent to 13sec/Month Deviation), RT3A3240N3
  • +/-10ppm -40°C to +125°C (Equivalent to 26sec/Month Deviation), RT3A3240Q1
• Max 50uA current consumption with temp compensation
• Typical 22uA current consumption when output and I2C is disabled
• I²C Serial Interface Supports I²C-Bus's High Speed Mode (400 kHz)
• Programmable square wave frequency output, defaults to 32 kHz on Power-up
• Alarm and Fixed Cycle Timer Interrupt
• Max Timer Duration Up to 22.75 Days
• Automatic Power-Fail Detect and Switch Circuitry
• The RT3A: -40°C to +85°C
• The RT3AQ: -40°C to +125°C, AECQ
• Packaging (Pb-free & Green available):
  • 10-pad Ceramic SMD package, 3.2x2.5mm
• Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)
• Halogen and Antimony Free. "Green" Device (Note 3) The RT3AQ is suitable for automotive applications requiring specific change control; this part is AEC-Q100 qualified, PPAP capable, and manufactured in IATF 16949 certified facilities. https://www.diodes.com/quality/product-definitions/

Application(s)

• Home Appliances
• Surveillance
• Automotive Infotainment, T-Box, Dashboard