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PT7C4337 View Datasheet(PDF) - Unspecified

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Description
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PT7C4337 Datasheet PDF : 25 Pages
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Data Sheet
PT7C4337
Real-time Clock Module (I2C Bus)
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Function Block
PT7C4337
X1
32.768
kHz
X2
CD
OSC
CG
Counter Chain
Control Register
INTA
SQW/INTB
Interrupt Control
Square Wave Output Control
Comparator 1
Comparator 2
Alarm 1 Register
(Sec, Min, Hour, Day/Date)
Alarm 2 Register
(Min, Hour, Day/Date)
Time Counter
(Sec,Min,Hour,Day,Date,Month,Year)
Address
Decoder
Address
Register
Shift Register
I /O
Interface
(I2C)
SCL
SDA
Recommended Layout for Crystal
32.768kHz
Crystal
Local Ground plane
Layer 2
PT7C4337
X1
X2
Guard Ring
(connect to gound)
Crystal Specifications
Parameter
Symbol
Min
Typ
Max
Nominal Frequency
fO
-
Series Resistance
ESR
-
32.768
-
-
45
Load Capacitance
CL
-
12.5
-
The crystal, traces and crystal input pins should be isolated from RF generating signals.
PT0205(02/07)
4
Unit
kHz
k
pF
Ver: 1
 

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