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
(TA = 0°C to +70°C or TA = -40°C to +85°C.) (Note 1)
PARAMETER
SYMBOL
VCC1,
CONDITIONS
MIN
TYP
MAX
UNITS
Supply Voltage VCC1, VCC2
(Notes 2, 10)
2.0
3.3
5.5
V
VCC2
VCC
+
Logic 1 Input
Logic 0 Input
VIH
VIL
(Note 2)
(Note 2)
2.0
V
V
0.3
VCC = 2.0V
CC = 5V
-0.3
-0.3
+0.3
+0.8
V
DC ELECTRICAL CHARACTERISTICS
(TA = 0°C to +70°C or TA = -40°C to +85°C.) (Note 1)
PARAMETER
Input Leakage
SYMBOL
CONDITIONS
(Notes 5, 13)
(Notes 5, 13)
MIN
TYP
85
MAX
500
UNITS
µA
ILI
I/O Leakage
ILO
85
500
µA
Logic 1 Output (IOH = -0.4mA)
Logic 1 Output (IOH = -1.0mA)
Logic 0 Output (IOL = 1.5mA)
Logic 0 Output (IOL = 4.0mA)
VCC = 2.0V
VCC = 5V
VCC = 2.0V
VCC = 5V
VCC1 = 2.0V
VCC1 = 5V
VCC1 = 2.0V
1.6
2.4
VOH
VOL
(Note 2)
(Note 2)
V
V
0.4
0.4
0.4
1.2
0.3
Active Supply Current
CH = 0
ICC1A
ICC1T
mA
µA
(Oscillator Enabled)
(Notes 4, 11)
0.2
0.45
1
1
5
Timekeeping Current
(Oscillator Enabled)
CH = 0
(Notes 3, 11,13)
VCC1 = 5V
1
VCC1 = 2.0V
VCC1 = 5V
IND
VCC2 = 2.0V
VCC2 = 5V
VCC2 = 2.0V
VCC2 = 5V
100
100
200
0.425
1.28
25.3
81
Standby Current (Oscillator
Disabled)
CH = 1
ICC1S
nA
(Notes 9, 11, 13)
Active Supply Current
(Oscillator Enabled)
Timekeeping Current
(Oscillator Enabled)
CH = 0
ICC2A
ICC2T
mA
(Notes 4, 12)
CH = 0
µA
(Notes 3, 12)
CH = 1
VCC2 = 2.0V
25
80
Standby Current (Oscillator
Disabled)
(Notes 9, 12)
ICC2S
µA
VCC2 = 5V
R1
R2
R3
2
4
8
Trickle-Charge Resistors
kΩ
Trickle-Charge Diode Voltage
Drop
VTD
0.7
V
10 of 16
DALLAS [ DALLAS SEMICONDUCTOR ]
