DS3232SN#-W Maxim Integrated, DS3232SN#-W Datasheet - Page 8

• Manufacturer Part Number: DS3232SN#-W
• Description: Real Time Clock
• Manufacturer: Maxim Integrated
• Series: DS3232r

Specifications of DS3232SN#-W

• Part # Aliases: 90-3232S#WN0

DS3232
8
Extremely Accurate I
Integrated Crystal and SRAM
The DS3232 is a serial RTC driven by a temperature-
compensated 32kHz crystal oscillator. The TCXO pro-
vides a stable and accurate reference clock, and
maintains the RTC to within ±2 minutes per year accu-
racy from -40°C to +85°C. The TCXO frequency output
is available at the 32kHz pin. The RTC is a low-power
clock/calendar with two programmable time-of-day
alarms and a programmable square-wave output. The
INT/SQW provides either an interrupt signal due to
V
GND
SCL
SDA
V
BAT
CC
X1
X2
Detailed Description
ADDRESS REGISTER
I
CAPACITOR ARRAY
POWER CONTROL
2
OSCILLATOR AND
C INTERFACE AND
DECODE
DS3232
CONTROL LOGIC/
TEMPERATURE
2
DIVIDER
SENSOR
C RTC with
alarm conditions or a square-wave output. The clock/cal-
endar provides seconds, minutes, hours, day, date,
month, and year information. The date at the end of the
month is automatically adjusted for months with fewer
than 31 days, including corrections for leap year. The
clock operates in either the 24-hour or 12-hour format
with an AM/PM indicator. The internal registers are
accessible though an I
A temperature-compensated voltage reference and
comparator circuit monitors the level of V
SQUARE-WAVE BUFFER;
CLOCK AND CALENDAR
CONTROL AND STATUS
VOLTAGE REFERENCE;
DEBOUNCE CIRCUIT;
PUSHBUTTON RESET
INT/SQW CONTROL
USER BUFFER
REGISTERS
REGISTERS
(7 BYTES)
SRAM
2
C bus interface.
Block Diagram
V
CC
N
N
Maxim Integrated
CC
32kHz
INT/SQW
RST
to detect