DS1339 Datasheet, PDF (6/18 Pages) Dallas Semiconductor – Serial Real-Time Clock

Figure 2. Timing Diagram
DS1339 I²C Serial Real-Time Clock
Figure 3. Block Diagram
X1
OSCILLATOR AND
DIVIDER
X2
"C" VERSION
ONLY
VCC
VBACKUP
POWER
CONTROL
SCL
SDA
SERIAL BUS
INTERFACE AND
ADDRESS
REGISTER
1Hz/4.096kHz/8.192kHz/32.768kHz
1Hz
CONTROL
LOGIC
Dallas Semiconductor
DS1339
MUX/ ^SQW/INT
BUFFER
ALARM,
TRICKLE
CHARGE, AND
CONTROL
REGISTERS
CLOCK AND
CALENDAR
REGISTERS
USER BUFFER
(7 BYTES)
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