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CBC34813-M5C 参数 Datasheet PDF下载

CBC34813-M5C图片预览
型号: CBC34813-M5C
PDF下载: 下载PDF文件 查看货源
内容描述: SPI实时时钟/日历,内置备用电源 [SPI Real-Time Clock/Calendar with Integrated Backup Power]
分类和应用: 时钟
文件页数/大小: 9 页 / 981 K
品牌: CYMBET [ CYMBET CORPORATION ]
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Preliminary
CBC34813 EnerChip™ RTC
SPI 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
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
5mm x 5mm x 1.4mm 16-pin QFN Package
General Description
Applications
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 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 SPI-bus. Alarm
and timer functions provide the option to generate a
wake-up signal on an interrupt pin.
• 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 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.
• Time keeping application
• Battery powered devices
• Metering
• High duration timers
• Daily alarms
• Low standby power applications
Figure 1: CBC34813 Pin-out Diagram
DS-72-38 V.01
©2013 Cymbet Corporation • Tel: +1-763-633-1780 • www.cymbet.com
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