DS1302 Datasheet, PDF (9/14 Pages) Dallas Semiconductor – Trickle Charge Timekeeping Chip

ABSOLUTE MAXIMUM RATINGS*
Voltage on Any Pin Relative to Ground –0.5V to +7.0V
Operating Temperature
0°C to 70°C or - 40°C to +85°C for industrial
Storage Temperature
–55°C to +125°C
Soldering Temperature
260°C for 10 seconds (DIP)
See IPC/JEDEC Standard J-STD-020A for
Surface Mount Devices
DS1302
* This is a stress rating only and functional operation of the device at these or any other conditions above
those indicated in the operation sections of this specification is not implied. Exposure to absolute
maximum rating conditions for extended periods of time may affect reliability.
RECOMMENDED DC OPERATING CONDITIONS
(0ºC to 70ºC or -40°C to +85°C)
PARAMETER
SYMBOL
Supply Voltage V_CC1, V_CC2
V_CC1,
V_CC2
Logic 1 Input
V_IH
Logic 0 Input
V_IL
V_CC=2.0V
V_CC=5V
*-40°C to +85°C for industrial device.
MIN TYP
2.0
2.0
-0.3
–0.3
MAX
5.5
V_CC+0.3
+0.3
+0.8
UNITS
V
V
V
NOTES
1, 11
1
1
DC ELECTRICAL CHARACTERISTICS
(0ºC to 70ºC or -40°C to +85°C; V_CC = 2.0 to 5.5V*)
PARAMETER
Input Leakage
I/O Leakage
Logic 1 Output
Logic 0 Output
Active Supply Current
Timekeeping Current
Standby Current
Active Supply Current
Timekeeping Current
Standby Current
Trickle Charge Resistors
SYMBOL
I_LI
I_LO
V_OH
V_OL
I_CC1A
I_CC1T
I_CC1S
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
I_CC2A
I_CC2T
I_CC2S
V_CC2=2.0V
V_CC2=5V
V_CC2=2.0V
V_CC2=5V
V_CC2=2.0V
V_CC2=5V
R1
R2
R3
MIN
1.6
2.4
TYP
2
4
8
MAX
+500
+500
0.4
0.4
0.4
1.2
0.3
1
100
100
200
0.425
1.28
25.3
81
25
80
UNITS
µA
µA
V
NOTES
6
6
2
V
3
mA 5, 12
µA
4, 12
nA
10, 12,
14
mA 5, 13
µA
4, 13
µA 10, 13
kΩ
kΩ
kΩ
Trickle Charge Diode Voltage Drop V_TD
*Unless otherwise noted.
0.7
V
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