DS1302_05 Datasheet, PDF (3/16 Pages) Dallas Semiconductor – Trickle-Charge Timekeeping Chip

Figure 1. Block Diagram
v _CC1
v_{CC 2}
GND
I/O
POWER
CONTROL
INPUT
SHIFT
REGISTERS
SCLK
CE
DS1302 Trickle-Charge Timekeeping Chip
DS1302
COMMAND AND
CONTROL LOGIC
X1
X2
OSCILLATOR
AND
COUNTDOWN
CHAIN
1Hz
REAL-TIME
CLOCK
31 x 8 RAM
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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