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Maxim > Solutions > Instrumentation Cluster

RTC/Oscillator

Challenges: External to main CPU, lowest current consumption for always-on applications.

DATA SHEETS
Display Title/Parts Key Advantages
QV  PDF Extremely Accurate I²C-Integrated RTC/TCXO/Crystal
DS3231

QV  PDF EconOscillator™/Divider
DS1077

Programmable, All-Silicon Oscillator Runs Up to 133MHz with No External Components



Key Specifications:  Oscillator Modules
Part Number Freq. Osc. Type Tuning Adjustment Type Freq. Output Type Frequency Stability
(±ppm/yr)
Frequency Stability
(±ppm/yr)
Frequency Stability
(±ppm/yr)
Frequency Stability
(±ppm)
VSUPPLY
(V)
0 to +40°C -40 to 0°C/ +40 to +85°C vs. VCC vs. Aging
DS3231  32.768kHz TCXO Digital CMOS Open-Drain 2 3.5 1 (typ) 5 (0-10 Years)
2.3 to 5.5
3
3.3
5
See All Oscillator Modules (28)

Key Specifications:  Timekeeping & Real-Time Clocks
Part Number Date/ Time Format Interface VSUPPLY
(V)
Time Keeping Current
(nA)
Memory Type Time of Day Alarms
hh = sec/100 typ
DS3231  YY-MM-DD/ HH:MM:SS I2C
2.3 to 5.5
3
3.3
5
840 None 2
See All Timekeeping & Real-Time Clocks (80)

Key Specifications:  Silicon Oscillators
Part Number fOUT
(MHz)
fOUT
(kHz)
ΔfOUT
(%)
User Prog. fOUT Spread Spectrum VCC
(V)
Reset Out Package/Pins Smallest Available Pckg.
(mm2)
Oper. Temp.
(°C)
max min max max w/pins
DS1077  66 8.1 +1.25 to -1.65 (0 to 70°C) I2C No 4.75 to 5.25 No
µMAX/8
SOIC(N)/8
16 -40 to +85
See All Silicon Oscillators (21)



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