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CBC-EVAL-12 Scheda tecnica(PDF) 3 Page - Cymbet Corporation

Il numero della parte CBC-EVAL-12
Spiegazioni elettronici  SPI Real-Time Clock/Calendar with Integrated Backup Power
Download  9 Pages
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Produttore elettronici  CYMBET [Cymbet Corporation]
Homepage  http://www.cymbet.com
Logo CYMBET - Cymbet Corporation

CBC-EVAL-12 Scheda tecnica(HTML) 3 Page - Cymbet Corporation

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CBC34123 EnerChip™ RTC
©2012 Cymbet Corporation • Tel: +1-763-633-1780 • www.cymbet.com
DS-72-31 V.08
Page 3 of 9
Preliminary
Pin Number
Label
Description
1
OSCO
Oscillator output; high-impedance node; minimize wire length between
quartz and package
2
TEST
Testpin;notuseraccessible;connecttoVSSorleavefloating(internally
pulled down)
3
INT/
Interruptoutput(open-drain;activeLOW)
4
CE
Chipenableinput(activeHIGH)withinternalpulldown
5
VSS
Ground
6
VCHG
4.1V(typical)chargingsource-connecttoVBATand/oroptionalEnerChip(s)
7
VEC
Positiveterminalofintegratedthinfilmbattery-connecttoVCHGandnoth-
ing else
8
SDO
Serial data output, push-pull; high-impedance when not driving; can be con-
nected to SDI for single wire data line
9
SDI
Serialdatainput;mayfloatwhenCEisinactive
10
SCL
Serialclockinput;mayfloatwhenCEisinactive
11
CLKOE
CLKOUTenableordisablepin;enableisactiveHIGH;connecttoVSSforlow
power operation
12
CLKOUT
Clockoutput(open-drain)
13
VDD
Supply voltage; positive or negative steps in VDD can affect oscillator perfor-
mance;recommend100nFdecouplingclosetothedevice(seeFig.30)
14
RESET/
Output signal indicating RTC is operating in backup power mode
15
EN
Chargepumpenable;activatesVCHG4.1V(typ.)chargingsource
16
OSCI
Oscillator input; high-impedance node; minimize wire length between quartz
and package
CBC34123 Input/Output Descriptions
Figure 4: CBC34123 Package (left: top view, looking through package; right: pad dimensions)
EnerChip Properties
Energy capacity (typical):
5µAh
Recharge time to 80%:
10 minutes
Charge/discharge cycles:
>5000 to 10% depth-of-discharge
Operating temperature:
-20°C to +70°C
Storage temperature:
-40°C to +125°C
Minimum VDD to charge EnerChip:
2.5V
Package
Dimensions
(mm)


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