DS1374_10 Datasheet, PDF (3/18 Pages) Maxim Integrated Products – I2C, 32-Bit Binary Counter Watchdog RTC with Trickle Charger and Reset Input/Output

I²C, 32-Bit Binary Counter Watchdog RTC with
Trickle Charger and Reset Input/Output
DC ELECTRICAL CHARACTERISTICS
(V_CC = V_CC(MIN) to V_CC(MAX) , T_A = -40°C to +85°C, unless otherwise noted.) (Note 2)
PARAMETER
Trickle-Charge Current-Limiting
Resistors
Input Leakage
I/O Leakage
RST Pin I/O Leakage
SDA Logic 0 Output (V_OL = 0.4V)
RST, SQW, and INT Logic 0
Outputs (Note 12)
Active Supply Current
(Notes 12, 13)
Standby Current (Notes 12, 14)
V_BACKUP Leakage Current
(V_BACKUP = 3.7V)
SYMBOL
R1
R2
R3
I_LI
I_LO
I_LORST
I_OLSDA
I_OL1
I_CCA
I_CCS
(Note 6)
(Note 7)
(Note 8)
(Note 9)
(Note 10)
(Note 11)
CONDITIONS
V_CC > 2V; V_OL = 0.4V
1.71V < V_CC < 2V; V_OL = 0.2 V_CC
1.3V < V_CC < 1.71V; V_OL = 0.2 V_CC
DS1374-18
DS1374-3
DS1374-33
DS1374-18
DS1374-3
DS1374-33
I_BACKUPLKG
MIN
-1
-1
-200
TYP
250
2000
4000
75
110
180
60
80
115
MAX UNITS


+1
+1
μA
+1
3.0
mA
3.0
mA
3.0
250
μA
150
200
μA
300
100
125
μA
175
100
nA
DC ELECTRICAL CHARACTERISTICS
(V_CC = 0V, V_BACKUP = 3.7V, T_A = -40°C to +85°C, unless otherwise noted.) (Note 2)
PARAMETER
SYMBOL
CONDITIONS
V_BACKUP Current (OSC ON);
SQW OFF
I_BKOSC1 (Note 15)
V_BACKUP Current (OSC ON);
SQW ON (32kHz)
I_BKOSC2 (Notes 15, 16)
V_BACKUP Data-Retention Current
(OSC OFF)
I_BACKUPDR
MAX
TYP
400
MAX UNITS
700
nA
600 1000
nA
25
100
nA
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