MAX31341BEWC+T

Real Time Clock Overview

The MAX31341BEWC+T is a low-current real-time clock (RTC) from Analog Devices/Maxim Integrated, housed in a 12-pin, 2mm x 1.5mm WLP package. It operates within a supply voltage range of +1.6V to +3.6V and supports an extended temperature range of -40°C to +85°C. The device provides timekeeping with typical currents of 180nA at 1.6V and 210nA at 3.0V. It features an I2C serial interface, two alarms, a programmable square-wave output, and 64 bytes of user RAM. The oscillator supports external 32.768kHz crystals with up to 100kΩ ESR and integrated 6pF load capacitance.

Real Time Clock Feature Summary

• Ultra-low power consumption with 180nA typical timekeeping current at 1.6V
• Integrated power management with automatic switchover to backup battery or supercapacitor
• Supports high-ESR crystals (up to 100kΩ) with 6pF load capacitance for minimal current draw
• Includes one digital Schmitt trigger input (D1) and one analog input (AIN) with programmable threshold

Real Time Clock Applications

• Medical devices
• Wearable electronics
• Point-of-Sale (POS) systems
• Telematics units
• Portable instruments

Real Time Clock Procurement Notes

Verify the component is the MAX31341BEWC+T variant, which utilizes the 12-pin WLP package. Confirm RoHS compliance status via the manufacturer's documentation. Ensure the ordering suffix matches the specific package code required for the design. Check for availability constraints as distribution may vary by region.

Real Time Clock Selection Notes

Select this RTC for designs requiring minimal board space due to its compact 2mm x 1.5mm footprint. Choose the MAX31341B over the C variant if the WLP package is preferred over the TDFN option. Ensure the application can accommodate the I2C interface timing requirements and that the external crystal meets the 6pF load capacitance specification.

Real Time Clock Part Context

This part belongs to the MAX31341 family of low-current real-time clocks. The 'B' suffix indicates the 12-pin WLP package, while the 'C' variant uses a 10-pin TDFN package. Both share identical electrical characteristics and functionality but differ in physical dimensions and pinout configuration.

Real Time Clock Replacement Considerations

The MAX31341CETB+T is a direct functional alternative using a 10-pin TDFN package instead of the WLP. Verify pin compatibility and board layout changes when substituting between the B and C variants.