Datasheet DS1307 (Maxim) - 5

DS1307 64 x 8, Serial, I2C Real-Time Clock
TYPICAL OPERATING CHARACTERISTICS
(VCC = 5.0V, TA = +25°C, unless otherwise noted.)
I I
V
CCS vs. VCC
VBAT=3.0V
BAT vs. VBAT
CC = 0V 120 400 SQW=32kHz 110 100 350 90 80 (uA 300 (nA NT 70 NT 60 250 50 PLY CURRE PLY CURRE SQW off SUP 40 SUP 200 30 20 150 10 0 100 1.0 2.0 3.0 4.0 5.0 2.0 2.5 3.0 3.5 VCC (V) VBACKUP (V)
I
V
BAT vs. Temperature
CC=0V , V BAT=3.0
SQW/OUT vs. Supply Voltage
32768.5 325.0 SQW=32kHz 32768.4 (nA ) NT 275.0 (Hz 32768.3 NCY QUE PLY CURRE 32768.2 FRE SUP 225.0 32768.1 SQW off 32768 175.0 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 -40 -20 0 20 40 60 80 Supply (V) TEMPERATURE (°C) 5 of 14 Document Outline TYPICAL OPERATING CIRCUIT PIN CONFIGURATIONS ORDERING INFORMATION ABSOLUTE MAXIMUM RATINGS RECOMMENDED DC OPERATING CONDITIONS (TA = 0 C to +70 C, TA = -40 C to +85 C.) (Notes 1, 2) DC ELECTRICAL CHARACTERISTICS (VCC = 4.5V to 5.5V; TA = 0 C to +70 C, TA = -40 C to +85 C.) (Notes 1, 2) DC ELECTRICAL CHARACTERISTICS (VCC = 0V, VBAT = 3.0V; TA = 0 C to +70 C, TA = -40 C to +85 C.) (Notes 1, 2) AC ELECTRICAL CHARACTERISTICS (VCC = 4.5V to 5.5V; TA = 0 C to +70 C, TA = -40 C to +85 C.) CAPACITANCE (TA = +25 C) 64 x 8, Serial, I2C Real-Time Clock SYMBOL TIMING DIAGRAM CLOCK ACCURACY RTC AND RAM ADDRESS MAP CLOCK AND CALENDAR CONTROL REGISTER I2C DATA BUS RS1