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PT7C4339 Datasheet, PDF (3/22 Pages) Pericom Semiconductor Corporation – Real-time Clock Module
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PT7C4339/4339C
Real-time Clock Module
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DC Electrical Characteristics
Unless otherwise specified, VCC = MIN to MAX, VBACKUP=MIN to MAX, TA = -40 °C to +85 °C
Item
Sym.
Pin
Condition Min Typ Max Units
Input Leakage
I/O Leakage
ILI
SCL
VIN=VCC or
GND
-1
ILO
SDA, SQW/INT
-1
1
μA
1
μA
IOL1
Logic0 Out VOL= 0.4V; VCC> VCCMIN
IOL2
SQW/INT
SDA,
1.0 3.0
-
mA
1.5 3.0
-
mA
Logic 0 Out VOL= 0.2V;
VBACKUP >= VBACKMIN
VCC Active Current
VCC Standby Current(Note 2)
Trickle-Charger Resistor Register10h
= A5h, VCC = Typ, VBACKUP= 0V
Trickle-Charger Resistor Register10h
= A6h, VCC = Typ, VBACKUP = 0V
Trickle-Charger Resistor Register10h
= A7h, VCC = Typ, VBACKUP = 0V
VBACKUP Leakage Current
IOL1
ICCA
ICCS
R1
R2
R3
IBKLKG
SQW/INT
VCC = 3.3V
VCC = 5.5V
VCC absent,
BBSQI=1
(Note 1)
(Note 3)
VBACKUP
0.25 -
80 250
40 100
150
200
2000
4000
25 100
DC Electrical Characteristics
Unless otherwise specified, VCC = 0V, VBACKUP=MIN to MAX, TA = -40 °C to +85 °C
Item
Sym.
Condition
Min
Typ
Max
VBACKUP Current, /EOSC=0, SQW Off
VBACKUP Current, /EOSC=0, SQW On
IBKOSC
IBKSQW
Note 4, Note5
Note 4
300
600
400
900
VBACKUP Current, /EOSC=1
IBKDR
Note6
10
100
Note:
1. SCL clocking at max frequency = 400 kHz, VIL = 0.0V, VIH = VCC, trickle charger disabled.
2. Specified with 2-wire bus inactive, VIL = 0.0V, VIH = VCC, trickle charger disabled.
3. VCC must be less than 3.63V if 200Ω resistance is selected.
4. Using recommended crystal on X1 and X2.
5. Specified with the SQW function disabled by setting INTCN = 1.
6. Crystal oscillator is disabled.
mA
μA
μA
Ω
Ω
Ω
nA
Units
nA
nA
nA
2015-08-0008
PT0508-1 08/24/15
3
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