Rainbow Electronics DS17487 - Manual (Page 26)

DS17485/DS17487
26 of 38
DC ELECTRICAL CHARACTERISTICS Over the operating range (3V)
PARAMETER SYMBOL MIN TYP MAX UNITS NOTES
Average V
CC
Power-Supply
Current
I
CC1
15 30 mA 1, 2
CMOS Standby Current
(
CS = V
CC
- 0.2V)
I
CC2
0.5 2 mA 1, 2
Input Leakage Current
(Any Input)
I
IL
-1 +1 mA
Output Leakage Current I
OL
-1 +1 mA 5
Output Logic 1 Voltage
at -0.4mA
V
OH
2.4 V
Output Logic 0 Voltage
at +0.8mA
V
OL
0.4 V
Power-Fail Trip Point V
PF
2.5 2.6 2.7 V 3
Battery Leakage OSC ON I
BAT1
0.50 0.7 mA 11
Battery Leakage OSC OFF I
BAT2
0.050 0.4 mA 11
I/O Leakage I
LO
-1 +1 mA 4
PWR Output at 0.4V I
OLPWR
4 mA
IRQ Output at 0.4V I
OLIRQ
0.8 mA
CRYSTAL SPECIFICATIONS*
PARAMETER SYMBOL MIN TYP MAX UNITS NOTES
Nominal Frequency F
O
32.768 kHz
Series Resistance ESR 45 kΩ
Load Capacitance C
L
6 or 12.5 pF
*The crystal, traces, and crystal input pins should be isolated from RF generating signals. Refer to Application
Note 58, “Crystal Considerations for Dallas Real-Time Clocks” for additional specification.