Rainbow Electronics DS3231 - Manual (Page 3)

DS3231
Extremely Accurate I
2
C-Integrated
RTC/TCXO/Crystal
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ELECTRICAL CHARACTERISTICS (continued)
(V CC = 2.3V to 5.5V, V CC > V BAT , T A = T MIN to T MAX , unless otherwise noted.) (Typical values are at V CC = 3.3V, V BAT = 3.0V, and
T A = +25°C, unless otherwise noted.) (Notes 1, 2)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Output Frequency f OUT V CC = 3.3V or V BAT = 3.3V 32.768 kHz
0°C to +40°C ±2
Frequency Stability vs.
Temperature (Commercial)
∆f/f
OUT
V CC = 3.3V or
V BAT = 3.3V,
aging offset = 00h >40°C to +70°C ±3.5
ppm
-40°C to <0°C ±3.5
0°C to +40°C ±2
Frequency Stability vs.
Temperature (Industrial)
∆f/f
OUT
V
CC
= 3.3V or
V
BAT
= 3.3V,
aging offset = 00h
>40°C to +85°C ±3.5
ppm
Frequency Stability vs. Voltage ∆f/V 1 ppm/V
-40°C 0.7
+25°C 0.1
+70°C 0.4
Trim Register Frequency
Sensitivity per LSB
∆f/LSB Specified at:
+85°C 0.8
ppm
Temperature Accuracy Temp V CC = 3.3V or V BAT = 3.3V -3 +3 °C
First year ±1.0
Crystal Aging ∆f/f
0
After reflow,
not production tested
0–10 years ±5.0
ppm
ELECTRICAL CHARACTERISTICS
(V CC = 0V, V BAT = 2.3V to 5.5V, T A = T MIN to T MAX , unless otherw.ise noted.) (Note 1)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
V BAT = 3.63V 70
Active Battery Current I BATA
EOSC = 0, BBSQW = 0,
SCL = 400kHz (Note 4)
V BAT = 5.5V 150
µA
V BAT = 3.63V 0.84 3.0
Timekeeping Battery Current I BATT
EOSC = 0, BBSQW = 0,
EN32kHz = 1,
SCL = SDA = 0V or
S C L = S D A = V
BAT ( Note 4) V BAT = 5.5V 1.0 3.5
µA
V BAT = 3.63V 575
Temperature Conversion Current I BATTC
EOSC = 0, BBSQW = 0,
SCL = SDA = 0V or
SCL = SDA = V
BAT
V BAT = 5.5V 650
µA
Data-Retention Current I BATTDR
EOSC = 1, SCL = SDA = 0V, +25°C 100 nA