DS1307 Datasheet, PDF (2/14 Pages) Dallas Semiconductor – 64 X 8 Serial Real Time Clock

DS1307 64 x 8, Serial, I²C Real-Time Clock
ABSOLUTE MAXIMUM RATINGS
Voltage Range on Any Pin Relative to Ground ....................................................................................-0.5V to +7.0V
Operating Temperature Range (Noncondensing)
Commercial................................................................................................................................0°C to +70°C
Industrial ..................................................................................................................................-40°C to +85°C
Storage Temperature Range ............................................................................................................. -55°C to +125°C
Soldering Temperature (DIP, leads) ........................................................................................+260°C for 10 seconds
Soldering Temperature (surface mount)…..……………………….Refer to the JPC/JEDEC J-STD-020 Specification.
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only,
and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is
not implied. Exposure to the absolute maximum rating conditions for extended periods may affect device reliability.
RECOMMENDED DC OPERATING CONDITIONS
(T_A = 0°C to +70°C, T_A = -40°C to +85°C.) (Notes 1, 2)
PARAMETER
SYMBOL
CONDITIONS
Supply Voltage
Logic 1 Input
Logic 0 Input
V_BAT Battery Voltage
V_CC
V_IH
V_IL
V_BAT
MIN
TYP
MAX UNITS
4.5
5.0
5.5
V
2.2
V_CC + 0.3
V
-0.3
+0.8
V
2.0
3
3.5
V
DC ELECTRICAL CHARACTERISTICS
(V_CC = 4.5V to 5.5V; T_A = 0°C to +70°C, T_A = -40°C to +85°C.) (Notes 1, 2)
PARAMETER
SYMBOL
CONDITIONS
MIN
Input Leakage (SCL)
I/O Leakage (SDA, SQW/OUT)
Logic 0 Output (I_OL = 5mA)
Active Supply Current
(f_SCL = 100kHz)
Standby Current
V_BAT Leakage Current
Power-Fail Voltage (V_BAT = 3.0V)
I_LI
I_LO
V_OL
I_CCA
I_CCS
I_BATLKG
V_PF
(Note 3)
-1
-1
1.216 x
V_BAT
TYP
5
1.25 x
V_BAT
MAX UNITS
1
μA
1
μA
0.4
V
1.5
mA
200
μA
50
nA
1.284 x
V_BAT
V
DC ELECTRICAL CHARACTERISTICS
(V_CC = 0V, V_BAT = 3.0V; T_A = 0°C to +70°C, T_A = -40°C to +85°C.) (Notes 1, 2)
PARAMETER
V_BAT Current (OSC ON);
SQW/OUT OFF
V_BAT Current (OSC ON);
SQW/OUT ON (32kHz)
V_BAT Data-Retention Current
(Oscillator Off)
SYMBOL
I_BAT1
I_BAT2
I_BATDR
CONDITIONS
MIN
TYP
MAX UNITS
300
500
nA
480
800
nA
10
100
nA
WARNING: Negative undershoots below -0.3V while the part is in battery-backed mode may cause loss of data.
2 of 14