Datasheet

DS1302 Trickle-Charge Timekeeping Chip
3 of 13
Figure 1. Block Diagram
POWER
CONTROL
v
CC1
v
CC2
GND
INPUT SHIFT
REGISTERS
I/O
SCLK
COMMAND AND
CONTROL LOGIC
REAL TIME
CLOCK
31 X 8 RAM
X1X2
CE
1Hz
C
L
C
L
DS1302
TYPICAL OPERATING CHARACTERISTICS
(V
CC
= 3.3V, T
A
= +25°C, unless otherwise noted.)
I
CC2T
vs. V
CC2T
5
10
15
20
25
30
2.03.04.05.0
V
CC2
(V)
SUPPLY CURRENT (uA
)
I
CC1T
vs. V
CC1T
100
150
200
250
300
350
400
2.0 3.0 4.0 5.0
V
CC1
(V)
SUPPLY CURRENT (nA
)