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Maxim > Solutions > GPS Solutions
Real-Time Clocks (RTCs)
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| Display |
Title/Parts |
Key Advantages |
| QV PDF |
Extremely Accurate I²C RTC with Integrated Crystal and SRAM
DS3232
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| QV PDF |
Low-Voltage SPI/3-Wire RTCs with Trickle Charger
DS1390, DS1391, DS1392, DS1393, DS1394
| Low-Voltage SPI/3-Wire RTCs with Trickle Charger have the Broadest Feature Set and the Smallest Footprint in Their Class |
| QV PDF |
Extremely Accurate SPI Bus RTC with Integrated Crystal and SRAM
DS3234
| Completely Integrated, Accurate Timing Solution Provides Better than ±2.0 Minutes per Year Accuracy Over the Industrial Temperature Range and Requires No User Calibration |
| QV PDF |
I²C Serial Real-Time Clock
DS1337, DS1337C
| Industry's Smallest I²C RTC with Two Time-of-Day Alarms |
| 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 |
| DS3234 |
32.768kHz |
TCXO |
Digital |
CMOS Push-Pull |
2 |
3.5 |
1 (typ) |
5 (0-10 Years) |
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| DS3232 |
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See All Oscillator Modules (28)
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| Key Specifications: Timekeeping & Real-Time Clocks |
| Part Number |
Date/ Time Format |
Interface |
VSUPPLY
(V) |
Time Keeping Current
(nA) |
CL
(pF) |
Memory Type |
Memory Size
(Bytes) |
Time of Day Alarms |
| hh = sec/100 |
typ |
| DS1394 |
YY-MM-DD/ HH:MM:SS:hh |
SPI |
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500 |
6 |
None |
- |
1 |
| DS3234 |
YY-MM-DD/ HH:MM:SS |
SPI |
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1500 |
- |
NV SRAM |
256 |
2 |
| DS3232 |
YY-MM-DD/ HH:MM:SS |
I2C |
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1500 |
- |
NV SRAM |
236 |
2 |
| DS1390 |
YY-MM-DD/ HH:MM:SS:hh |
SPI |
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500 |
6 |
None |
- |
1 |
| DS1391 |
YY-MM-DD/ HH:MM:SS:hh |
SPI |
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500 |
6 |
None |
- |
1 |
| DS1392 |
YY-MM-DD/ HH:MM:SS:hh |
3-Wire |
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500 |
6 |
None |
- |
1 |
| DS1393 |
YY-MM-DD/ HH:MM:SS:hh |
3-Wire |
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500 |
6 |
None |
- |
1 |
| DS1337 |
YY-MM-DD/ HH:MM:SS |
I2C |
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425 |
6 |
None |
- |
2 |
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See All Timekeeping & Real-Time Clocks (80)
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