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CBC34123-M5C-TR5 データシート(PDF) 1 Page - Cymbet Corporation |
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CBC34123-M5C-TR5 データシート(HTML) 1 Page - Cymbet Corporation |
1 / 9 page ©2012 Cymbet Corporation • Tel: +1-763-633-1780 • www.cymbet.com DS-72-31 V.08 Page 1 of 9 SPI Real-Time Clock/Calendar with Integrated Backup Power CBC34123 EnerChip™ RTC Features • Integrated rechargeable solid state battery with power-fail detect and automatic switchover, pro- viding greater than 30 hours of RTC backup • Smallest commercially available RTC with inte- grated backup power in compact 5mm x 5mm 1.4mm QFN package • Temperature compensated charge control • Integrated EnerChip™ recharged at VDD > 2.5V • SMT assembly - lead-free reflow solder tolerant • Real time clock provides year, month, day, week- day, hours, minutes, and seconds based on a 32.768 kHz quartz crystal • Resolution: seconds to years • Watchdog functionality • Freely programmable timer and alarm with inter- rupt capability • 3-line SPI-bus with separate, but combinable data input and output • Integrated oscillator load capacitors for C L = 7 pF • Internal Power-On Reset (POR) • Open-drain interrupt and clock output pins • Programmable offset register for frequency adjustment • Eco-friendly, RoHS compliant - tested General Description The EnerChip RTC CBC34123-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 CBC34123 provides greater than 30 hours of backup time in the event main power is interrupted. Typical blackout times are less than 4 hours. The EnerChip has extremely low self-discharge, recharges quickly, is non-flammable, and RoHS-compliant. The EnerChip is charged automatically anytime VDD is above 2.5V. Data is transferred serially via a Serial Peripheral Interface (SPI-bus) with a maximum data rate of 6.25 Mbit/s. Alarm and timer functions provide the option to generate a wake-up signal on an interrupt pin. An offset register allows fine tuning of the clock. 5mm x 5mm x 1.4mm 16-QFN Package Applications • Wireless sensors and RFID tags and other powered, low duty cycle applications. • 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. • 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. • Time keeping application • Battery powered devices • Metering • High duration timers • Daily alarms • Low standby power applications Preliminary Figure 1: CBC34123 Pin-out Diagram |
同様の部品番号 - CBC34123-M5C-TR5 |
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同様の説明 - CBC34123-M5C-TR5 |
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