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| PT7C43390 Datasheet, PDF (4/38 Pages) Pericom Semiconductor Corporation – Real-time Clock Module | |||
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PT7C43390/43390C
Real-time Clock Module
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Maximum Ratings
Storage Temperature .................................................................................... -55oC to +125oC
OperatingTemperature..................................................................................-40oC to +85oC
Power SupplyVoltage........................................................................Vss-0.3V to Vss+6.5V
DC Input Voltage(SCL, SDA) .........................................................Vss-0.3V to Vss+6.5V
DC Output Voltage(SDA, INT1, INT2) .......................................Vss-0.3V to Vss+6.5V
Power Dissipation..........................................................250mW (dependonpackage)
Stresses greater than those listed under MAXIMUM
RATINGS may cause permanent damage to the
device. This is a stress rating only and functional
operation of the device at these or any other conditions
above those indicated in the operational sections of
this specification is not implied. Exposure to absolute
maximum rating conditions for extended periods may
affect reliability.
Recommended Operating Conditions
Symbol
Parameter
CONDITIONS
Min Typ Max Unit
VDD Power supply voltage
TA = â40 to +85°C
1.35 3.0
5.5
V
Topr
Operating temperature
VDD =1.3 to 5.5 V
â40 +25 +85 °C
VDDT Time keeping voltage range
TA = â40 to +85°C
1.25
-
5.5
V
VDDR
VDET
Register hold voltage
Power supply voltage detection voltage *1
TA = â40 to +85°C
0.9
-
5.5
V
TA = â40 to +85°C
0.70 1.05 1.40
V
CL
Crystal oscillator CL value
-
-
6
12.5 pF
*1. Power supply voltage detection voltage: Constantly maintains the relation of VDET > VDDRM (minimum data hold voltage).
Oscillation Characteristics
(For PT7C43390: TA = 25°C, VDD = 3.0 V, VSS = 0 V, crystal oscillator (CL = 6pF, 32.768 kHz).)
Symbol
Parameter
Conditions
Min. Typ. Max. Unit
VSTA
Oscillation start voltage
-
Oscillation start time
Within 10 seconds
-
1.1
-
5.5
V
-
-
3
s
δIC
IC to IC frequency deviation
-
-10
-
+10
ppm
δV
Frequency voltage deviation
VDD =1.35 to 5.5 V
-3
-
+3
ppm
(For PT7C43390C: TA = 25°C, VDD = 3.0 V, VSS = 0 V.)
Symbol
Parameter
VSTA
-
Oscillation start voltage
Oscillation start time
δIC
IC to IC frequency deviation
ïf / f Frequency tolerance
Conditions
Within 10 seconds
-
-
-
δV
Frequency voltage deviation
VDD =1.3 to 5.5 V
fa
Aging
First year
Min.
1.1
-
-10
-30
-3
Typ.
-
-
-
-
Max.
5.5
3
+10
+30
+3
±5
Unit
V
s
ppm
ppm
ppm
ppm/year
2015-12-0001
PT0280-8 12/11/15
4
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