DS1602 Datasheet, PDF (8/10 Pages) Dallas Semiconductor – Elapsed Time Counter

AC ELECTRICAL CHARACTERISTICS
PARAMETER
SYMBOL MIN
Data to CLK Setup
CLK to Data Hold
CLK to Data Delay
CLK Low Time
CLK High Time
CLK Frequency
CLK Rise & Fall
RST to CLK Setup
t_DC
50
t_CDH
60
t_CDD
t_CL
250
t_CH
250
f_CLK
DC
t_F, t_R
t_CC
100
CLK to RST Hold
t_CCH
60
RST Inactive Time
t_CWH
1
RST Low to I/O High Z
t_RDZ
CLK High to I/O High Z
t_CDZ
NOTES:
1. All voltages are reference to ground.
DS1602
(V_CC = +5V ±10%; -40°C to 85°C)
TYP
MAX
UNITS NOTES
ns
7
ns
7
200
ns
7, 8, 9
ns
7
ns
7
2.0
MHz
7
500
ns
ns
7
ns
7
µs
7
70
ns
7
20
ns
7
2. Logic 1 voltages are specified at a source current of 1 mA.
3. Logic 0 voltages are specified at a sink current of 4 mA.
4. I_CC is specified with the DQ pin open.
5. I_CC1 is specified with V_CC at 5.0V and RST = GND.
6. I_BAT is specified with V_CC < V_BAT and V_BAT within DC recommended operating conditions.
7. Measured at V_IH = 2.0V or V_IL = 0.8V.
8. Measured at V_OH = 2.4V or V_OL = 0.4V.
9. Load capacitance = 50 pF.
10. Specified as the load capacitance for which the crystal frequency is guaranteed (see crystal
manufacturer’s data sheet).
11. Leakage current is the amount of current consumed from the battery when V_CC is not present and the
oscillator is turned off.
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