CBC34123-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

CBC34123 is a Real-Time Clock (RTC) and calendar optimized for low power applications and includes a rechargeable solid state backup power source and all power management functions necessary to ensure 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 storage device - the EnerChip - and manages battery charging, discharge cutoff, power switchover, and temperature compensation to maximize the service life of the device.

Data is transferred serially via a Serial Peripheral Interface (SPI-bus) with a maximum data rate of 6.25 Mbit/s. An alarm and timer function is also available providing the possibility to generate a wake-up signal on an interrupt pin. An offset register allows fine tuning of the clock.

With the industry’s lowest RTC backup operating current consumption, the integrated 5µAh EnerChip provides >30 hours of backup time in the event main power is interrupted. 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.

The CBC34123 is the smallest commercially available devcie that includes RTC clock/calendar functionality with integrated backup power. The CBC34123 is available in a 5mm x 5mm x 0.9mm surface mount Land Grid Array (LGA) module in a 16-QFN configuration.

The CBC34123 is a 16-pin, 5 mm x 5 mm Quad Flat Nolead (QFN) package, available in tubes, trays, or tapeand-reel for use with automatic insertion equipment.

特性 Features

• Real time clock provides year, month, day, weekday, hours, minutes, and seconds based on a 32.768 kHz quartz crystal
• Resolution: seconds to years
• Watchdog functionality
• Freely programmable timer and alarm with interrupt capability
• Clock operating voltage: 1.1 V to 5.5 V
• 3 line SPI-bus with separate, but combinable data input and output
• Serial interface at VDD = 1.8 V to 5.5 V
• 1 second or 1 minute interrupt output
• Integrated oscillator load capacitors for CL = 7 pF
• Internal Power-On Reset (POR)
• Open-drain interrupt and clock output pins
• Programmable offset register for frequency adjustment
• Integrated 5µAh Rechargeable Solid State Battery with power manager
• Temperature Compensated Charge Control
• Integrated EnerChip Recharged at VDD as Low as 2.5V
• SMT - Lead-Free Reflow Tolerant
• Eco-Friendly, RoHS Compliant - tested

应用 Application

• 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
• Energy Harvesting by coupling the EnerChip with energy transducers such as solar panels.
• Time keeping applications
• Battery powered devices
• Metering
• High duration timers
• Daily alarms
• Low standby power applications