PT7C4307WEX Pericom Semiconductor, PT7C4307WEX Datasheet - Page 14
![IC REAL TIME CLK/CALENDAR 8-SOIC](/photos/18/28/182870/8-soic_sml.jpg)
PT7C4307WEX
Manufacturer Part Number
PT7C4307WEX
Description
IC REAL TIME CLK/CALENDAR 8-SOIC
Manufacturer
Pericom Semiconductor
Type
Clock/Calendarr
Datasheet
1.PT7C4307WEX.pdf
(16 pages)
Specifications of PT7C4307WEX
Memory Size
56B
Time Format
Binary
Date Format
Binary
Interface
I²C, 2-Wire Serial
Voltage - Supply
4.5 V ~ 5.5 V
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
8-SOIC (0.154", 3.90mm Width)
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
PT7C4307WEXTR
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
PT7C4307WEX
Manufacturer:
Pericom
Quantity:
4 200
Part Number:
PT7C4307WEX
Manufacturer:
PERICOM
Quantity:
20 000
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Recommended Layout for Crystal
Built-in Capacitors Specifications and Recommended External Capacitors
Note: The frequency of crystal can be optimized by external capacitor C
the equation as below:
Cpar + [(C
Cpar is all parasitical capacitor between X1 and X2.
C
Crystal Specifications
PT0206(08/09)
L
Nominal Frequency
Recommended External
is crystal’s load capacitance.
Load Capacitance
Series Resistance
Build-in capacitors
Parameter
capacitors
1
+C
G
)*(C
Parameter
2
+C
Note: The crystal, traces and crystal input pins
should be isolated from RF generating signals.
D
)]/ [(C
Symbol
1
ESR
+C
C
f
O
L
X1 to GND
X2 to GND
X1 to GND
X2 to GND
G
)+(C
2
+C
D
)] =C
Min
L
-
-
-
Symbol
C
C
C
C
G
D
1
2
14
1
32.768
and C
Typ
12.5
-
Real-time Clock Module (I
2
, for frequency=32.768Hz, C
Typ
20
20
4
4
Max
70
-
-
1
Unit
and C
pF
pF
pF
pF
Data Sheet
PT7C4307
2
should meet
Unit
kHz
2
kΩ
pF
C Bus)
Ver: 3