Analog Devices / Maxim Integrated MAX31342 Real-Time Clock with I2C Interface
Analog Devices MAX31342 Real-Time Clock with I2C Interface is a timekeeping device that provides an extremely low timekeeping current. This permits longer life from a power supply. The MAX31342 supports 6pF high-ESR crystals, which broaden the pool of usable crystals for the devices. This device is accessed through an I2C serial interface. An integrated power-on reset function ensures deterministic default register status upon power-up. Other features of the Analog Devices MAX31342 Real-Time Clock include two time-of-day alarms, interrupt outputs, a programmable square-wave output, and a serial bus timeout mechanism.
Features
- Increases battery life
- 150nA timekeeping current
- Wide range of external crystals with CL = 6pF and ESR up to 100kΩ for minimal current draw
- Provides flexible configurability
- Programmable square wave output for clock monitoring
- Saves board space
- Integrated load capacitors for crystal oscillator
- 1x2mm, 8-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 function
- Integrated protection
- Power-on reset for default configuration
- Clock is switched to crystal oscillator in case of external clock failure
- Lockup-free operation with bus timeout
Applications
- Medical
- Wearables
- Point-of-sale (POS)
- Telematics
- Portable instruments
- Portable audio
- Power meters
Typical Application Circuit
Related Product
Analog Devices / Maxim Integrated MAX31342 Shield
PCB to evaluate the MAX31342 low-current real-time clock (RTC) with an I2C interface.
Publié le: 2019-03-26
| Mis à jour le: 2023-04-20