DS3231S+ DALLAS [Dallas Semiconductor], DS3231S+ Datasheet - Page 6

• Manufacturer Part Number: DS3231S+
• Description: Extremely Accurate I2C-Integrated RTC/TXO/Crystal
• Manufacturer: DALLAS [Dallas Semiconductor]

Extremely Accurate I
RTC/TCXO/Crystal
6
Note 1: Limits at -40°C are guaranteed by design and not production tested.
Note 2: All voltages are referenced to ground.
Note 3: I
Note 4: Current is the averaged input current, which includes the temperature conversion current.
Note 5: The RST pin has an internal 50kΩ (nominal) pullup resistor to V
Note 6: After this period, the first clock pulse is generated.
Note 7: A device must internally provide a hold time of at least 300ns for the SDA signal (referred to the V
Note 8: The maximum t
Note 9: A fast-mode device can be used in a standard-mode system, but the requirement t
Note 10: C
Note 11: The parameter t
Note 12: This delay applies only if the oscillator is enabled and running. If the EOSC bit is a 1, the startup time of the oscillator is
SDA
SCL
_____________________________________________________________________
STOP
to bridge the undefined region of the falling edge of SCL.
is automatically the case if the device does not stretch the low period of the SCL signal. If such a device does stretch the
low period of the SCL signal, it must output the next data bit to the SDA line t
before the SCL line is released.
0.0V ≤ V
added to this delay.
CCA
B
t
BUF
—total capacitance of one bus line in pF.
—SCL clocking at max frequency = 400kHz.
START
CC
≤ V
CC(MAX)
HD:DAT
OSF
t
HD:STA
t
LOW
is the period of time the oscillator must be stopped for the OSF flag to be set over the voltage range of
needs only to be met if the device does not stretch the low period (t
and 2.3V ≤ V
t
R
t
HD:DAT
BAT
≤ 3.4V.
t
F
t
HIGH
2
C-Integrated
t
SU:DAT
CC
REPEATED
.
Data Transfer on I
START
t
SU:STA
R(MAX)
t
HD:STA
SU:DAT
+ t
SU:DAT
≥ 250ns must then be met. This
LOW
= 1000 + 250 = 1250ns
) of the SCL signal.
IH(MIN)
2
C Serial Bus
t
SP
of the SCL signal)
t
SU:STO