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CBC-EVAL-12 Folha de dados(PDF) 1 Page - Cymbet Corporation

Nome de Peças CBC-EVAL-12
Descrição Electrónicos  I2C Real-Time Clock/Calendar with Integrated Backup Power
Download  9 Pages
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Fabricante Electrônico  CYMBET [Cymbet Corporation]
Página de início  http://www.cymbet.com
Logo CYMBET - Cymbet Corporation

CBC-EVAL-12 Folha de dados(HTML) 1 Page - Cymbet Corporation

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©2013 Cymbet Corporation • Tel: +1-763-633-1780 • www.cymbet.com
DS-72-34 V.09
Page 1 of 9
I2C Real-Time Clock/Calendar with Integrated Backup Power
CBC34803 EnerChip™ RTC
Features
• Ultra low power Real Time Clock with Integrated
rechargeable EnerChip™ solid state battery,
power-fail detect and automatic switchover,
providing greater than 6 days 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
• I2C-bus (up to 400kHz)
• Eco-friendly, RoHS compliant - tested
General Description
The EnerChip RTC CBC34803-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
CBC34803 provides greater than 6 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 RoHS-
compliant. The EnerChip is charged automatically
anytime VDD is above 2.5V.
Data is transferred serially via an I2C-bus. Alarm and
timer functions provide the option to generate a
wake-up signal on an interrupt pin.
5mm x 5mm x 1.4mm 16-pin QFN Package
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.
• Ultra Low Power Timers
using only 35nA can be
implemented with the CBC34803
• 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.
• Time keeping application
• Battery powered devices
• Metering
• High duration timers
• Daily alarms
• Low standby power applications
Preliminary
Figure 1: CBC34803 Pin-out Diagram
VCAP


Nº de peça semelhante - CBC-EVAL-12

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Descrição semelhante - CBC-EVAL-12

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