Analog Devices / Maxim Integrated MAX31341B Low-Current Real-Time Clock
Analog Devices MAX31341B Low-Current Real-Time Clock is a timekeeping device that provides a nano amperes timekeeping current, extending battery life. The MAX31341B supports 6pF high-ESR crystals, which broaden the pool of usable crystals for the devices. The device is accessed through an I2C serial interface. The Analog Devices MAX31341B Low-Current Real-Time clock features one digital Schmitt trigger input and one programmable threshold analog input.
Features
- Increases battery life
- 180nA timekeeping current
- Wide range of external crystals with CL = 6pF and ESR up to 100kΩ for minimal current draw
- Trickle charger for external supercapacitor or rechargeable battery
- Provides flexible configurability
- A Schmitt trigger input to trigger interrupt
- One analog input with adjustable threshold to trigger interrupt
- Programmable square wave output for clock monitoring
- Saves board space
- Integrated load capacitors for crystal oscillator
- 2x1.5mm, 12-bump WLP with 0.5mm pitch
- Value add features for ease-of-use
- +1.6V to +3.6V operating voltage range
- Countdown timer with repeat and pause functions
- 64-byte RAM for user data storage
- Integrated protection
- Power-on reset for default configuration
- Automatic switchover to backup battery or supercapacitor on power fail
- Lockup-free operation with bus timeout
Applications
- Medical
- Wearables
- Point-of-sale (POS)
- Telematics
- Portable instruments
- Portable audio
Block Diagram
Additional Resources
Yayınlandı: 2019-06-24
| Güncellenmiş: 2023-04-17