DS1302 Datasheet, PDF (10/13 Pages) Dallas Semiconductor – Trickle Charge Timekeeping Chip

DS1302 Trickle-Charge Timekeeping Chip
ABSOLUTE MAXIMUM RATINGS
Voltage Range on Any Pin Relative to Ground……………………………………………………………….-0.5Vto +7.0V
Operating Temperature Range, Commercial………………………………………………………………….0°C to +70°C
Operating Temperature Range, Industrial (IND)……………………………………………………………-40°C to +85°C
Storage Temperature Range……………………………………………………………………………..….-55°C to +125°C
Soldering Temperature (leads, 10 seconds)………………………………………………………………..………….260°C
Soldering Temperature (surface mount)………………………………………………..…….See IPC/JEDEC J-STD-020
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 or T_A = -40°C to +85°C.) (Note 1)
PARAMETER
SYMBOL
CONDITIONS
Supply Voltage V_CC1, V_CC2
V_CC1,
V_CC2
(Notes 2, 10)
Logic 1 Input
V_IH
(Note 2)
Logic 0 Input
V_IL ^{VCC = 2.0V} (Note 2)
V_CC = 5V
MIN TYP MAX UNITS
2.0
3.3 5.5
V
2.0
V_CC +
0.3
V
-0.3
+0.3
V
-0.3
+0.8
DC ELECTRICAL CHARACTERISTICS
(T_A = 0°C to +70°C or T_A = -40°C to +85°C.) (Note 1)
PARAMETER
SYMBOL
CONDITIONS
Input Leakage
I_LI
(Notes 5, 13)
I/O Leakage
Logic 1 Output (I_OH = -0.4mA)
Logic 1 Output (I_OH = -1.0mA)
Logic 0 Output (I_OL = 1.5mA)
Logic 0 Output (I_OL = 4.0mA)
Active Supply Current
(Oscillator Enabled)
Timekeeping Current
(Oscillator Enabled)
Standby Current (Oscillator
Disabled)
Active Supply Current
(Oscillator Enabled)
Timekeeping Current
(Oscillator Enabled)
Standby Current (Oscillator
Disabled)
Trickle-Charge Resistors
I_LO
V_OH
V_OL
I_CC1A
I_CC1T
I_CC1S
I_CC2A
I_CC2T
I_CC2S
R1
R2
R3
V_CC = 2.0V
V_CC = 5V
V_CC = 2.0V
V_CC = 5V
V_CC1 = 2.0V
V_CC1 = 5V
V_CC1 = 2.0V
V_CC1 = 5V
V_CC1 = 2.0V
V_CC1 = 5V
IND
V_CC2 = 2.0V
V_CC2 = 5V
V_CC2 = 2.0V
V_CC2 = 5V
V_CC2 = 2.0V
V_CC2 = 5V
(Notes 5, 13)
(Note 2)
(Note 2)
CH = 0
(Notes 4, 11)
CH = 0
(Notes 3, 11,13)
CH = 1
(Notes 9, 11, 13)
CH = 0
(Notes 4, 12)
CH = 0
(Notes 3, 12)
CH = 1
(Notes 9, 12)
Trickle-Charge Diode Voltage
Drop
V_TD
MIN TYP MAX UNITS
85 500
μA
85 500
μA
1.6
V
2.4
0.4
V
0.4
0.4
mA
1.2
0.2 0.3
μA
0.45
1
1
100
1
100
nA
5
200
0.425
mA
1.28
25.3
81
μA
25
μA
80
2
4
kΩ
8
0.7
V
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