Preliminary
CBC34803 EnerChip™ RTC
I2C Real-Time Clock/Calendar with Integrated Backup Power
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
•
5mm x 5mm x 1.4mm 16-pin QFN Package
General Description
•
•
•
•
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
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.
•
•
•
•
•
•
•
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
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.
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.
•ꢀ 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.
VCAP
•
•
•
•
•
•
Time keeping application
Battery powered devices
Metering
High duration timers
Daily alarms
Low standby power applications
Figure 1: CBC34803 Pin-out Diagram
©2013 Cymbet Corporation • Tel: +1-763-633-1780 • www.cymbet.com
DS-72-34 V.09
Page 1 of 9
5秒后页面跳转
MAX6675资料手册参数详解、引脚配置说明
LM258引脚图及功能介绍、主要参数分析
CD4052资料手册参数详解、引脚配置说明
一文带你了解TPS5430资料手册分析：参数介绍、引脚配置说明
微信公众号
抖音公众号
浙公网安备 33010502006866号 浙ICP备10014259号-119
营业执照ICP证
数据手册
如果您发现信息不准确，
