Datasheet

Extremely Accurate I
2
C-Integrated
RTC/TCXO/Crystal
Block Diagram
CLOCK AND CALENDAR
REGISTERS
USER BUFFER
(7 BYTES)
VOLTAGE REFERENCE;
DEBOUNCE CIRCUIT;
PUSHBUTTON RESET
I
2
C INTERFACE AND
ADDRESS REGISTER
DECODE
POWER CONTROL
V
CC
V
BAT
GND
SCL
SDA
TEMPERATURE
SENSOR
CONTROL LOGIC/
DIVIDER
ALARM, STATUS, AND
CONTROL REGISTERS
OSCILLATOR AND
CAPACITOR ARRAY
X1
X2
N
32kHz
N
INT/SQW
SQUARE-WAVE BUFFER;
INT/SQW CONTROL
N
RST
V
CC
DS3231
1Hz
1Hz
DS3231
8
Maxim Integrated