CBC34813-M5C中文资料SPI Real-Time Clock/Calendar with Integrated Backup Power数据手册Cymbet规格书

描述 Description

The EnerChip RTC CBC34813-M5C combines a Real-Time Clock (RTC) and calendar optimized for low power applications with an integrated rechargeable solid state backup battery and all power management functions. The EnerChip RTC ensures a seamless transition from main power to backup power in the event of power loss. The integrated power management circuit ensures thousands of charge-discharge cycles from the integrated EnerChip and manages battery charging, discharge cutoff, power switchover, and temperature compensation to maximize the service life of the device. The CBC34813 provides greater than 5 days of backup time in the event main power is interrupted. The integrated EnerChip recharges quickly, has extremely low self-discharge, is non-flammable, and RoHScompliant. The EnerChip is charged automatically anytime VDD is above 2.5V.

特性 Features

• Ultra low power Real Time Clock with Integrated rechargeable EnerChip™ solid state battery, power-fail detect and automatic switchover, providing greater than 5 days (typical) of RTC backup
• 5mm x 5mm x 1.4mm QFN package is the smallest commercially available RTC having integrated backup power
• Temperature-compensated charge control
• Integrated EnerChip™ recharged at VDD > 2.5V
• SMT assembly - lead-free reflow solder tolerant
• Counters for hundredths, seconds, minutes, hours, date, month, year, century, and weekday based on a 32.768 kHz oscillator
• Automatic leap year calculation
• Alarm capability on all counters
• 2 general purpose outputs
• 64 bytes of RAM
• Advanced crystal calibration to ± 2 ppm
• Advanced RC calibration to ± 16 ppm
• Automatic calibration of RC oscillator to crystal oscillator
• SPI-bus (up to 400kHz)
• Eco-friendly, RoHS compliant - tested

应用 Application

• Power bridging to provide uninterruptible RTC function during exchange of main batteries.
• Consumer appliances that have real-time clocks; provides switchover power from main supply to backup battery.
• Ultra Low Power Timersusing only 35nA can be implemented with the CBC34813
• Wireless sensors and RFID tags and other powered, low duty cycle applications.
• Business and industrial systems such as: network routers, point-of-sale terminals, single-board computers, test equipment, multi-function printers, industrial controllers, and utility meters
• Power bridging to provide uninterruptible RTC function during exchange of main batteries.Time keeping applications
• Battery powered devices
• Metering
• High duration timers
• Daily alarms
• Low standby power applications