DS1302 Datasheet, PDF (3/13 Pages) Dallas Semiconductor – Trickle Charge Timekeeping Chip

Figure 1. Block Diagram
v_CC1
v_CC2
GND
POWER
CONTROL
DS1302
CE
I/O
SCLK
INPUT SHIFT
REGISTERS
COMMAND AND
CONTROL LOGIC
X2
X1
C_L
C_L
1Hz
REAL TIME
CLOCK
31 X 8 RAM
DS1302 Trickle-Charge Timekeeping Chip
TYPICAL OPERATING CHARACTERISTICS
(V_CC = 3.3V, T_A = +25°C, unless otherwise noted.)
I_CC1T vs. V_CC1T
400
350
300
250
200
150
100
2.0
3.0 _{VCC1 (V)} 4.0
5.0
I_CC2T vs. V_CC2T
30
25
20
15
10
5
2.0
3.0 _{VCC2 (V)} 4.0
5.0
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