IDT1338B-31
REAL-TIME CLOCK WITH BATTERY BACKED NON-VOLATILE RAM
RTC
DC Electrical Characteristics
(V = V
to V
, TA = -40°C to +85°C, unless otherwise noted. Typical values are at V = 3.3 V,
CC(MAX) CC
CC
CC(MIN)
TA = +25°C, unless otherwise noted.) (Note 1)
Parameter
Symbol
Conditions
Min.
Typ. Max. Units
Input Leakage
I
Note 3
Note 4
1
µA
µA
LI
I/O Leakage
I
1
LO
VCC > 2 V; V = 0.4 V
3.0
3.0
3.0
3.0
mA
OL
SDA Logic 0 Output
I
OLSDA
VCC < 2 V; V = 0.2VCC
OL
VCC > 2 V; V = 0.4 V
mA
mA
OL
1.71 V < VCC < 2 V;
SQW/OUT Logic 0 Output
I
V
= 0.2VCC
OLSQW
OL
1.3 V < VCC < 1.71 V;
= 0.2VCC
250
µA
V
OL
IDT1338-18
75
150
200
325
IDT1338-31; VCC < 3.63 V
120
Active Supply Current (Note 5)
Standby Current (Note 6)
I
I
µA
CCA
IDT1338-31; 3.63 V < VCC
5.5 V
<
<
IDT1338-18
60
85
100
125
200
IDT1338-31; VCC < 3.63 V
µA
nA
CCS
IDT1338-31; 3.63 V < VCC
5.5 V
V
Leakage Current (VCC Active)
I
25
100
BAT
BATLKG
DC Electrical Characteristics
(V = 0V, TA = -40°C to +85°C, unless otherwise noted. Typical values are at V
= 3.0 V, TA = +25°C, unless
CC
BAT
otherwise noted.) (Note 1)
Parameter
Symbol
Conditions
Min.
Typ.
Max.
Units
V
Current (OSC ON); V
=3.7 V,
=3.7 V,
I
Note 7
800
1200
nA
BAT
BAT
BAT
BATOSC1
SQW/OUT OFF
V
Current (OSC ON); V
I
Note 7
Note 7
1025
10
1400
100
nA
nA
BAT
BATOSC2
SQW/OUT ON
V
Data-Retention Current
I
BATDAT
BAT
(OSC OFF); V
=3.7 V
BAT
IDT™ REAL-TIME CLOCK WITH BATTERY BACKED NON-VOLATILE RAM 12
IDT1338B-31 REV A 112309
IDT [ INTEGRATED DEVICE TECHNOLOGY ]
