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Maxim > 方案 > HVAC
实时时钟
提供时间信息，具有闹钟、定时中断、方波输出、复位及看门狗定时器等功能。
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| 显示 |
标题/型号 |
关键优势 |
| QV PDF |
高精度、I²C RTC，集成TCXO/晶体/FRAM
DS32B35, DS32C35
| 非易失存储器，无需备份电源、不受写次数限制 |
| QV PDF |
低电压SPI/3线接口RTC，带有涓流充电器
DS1390, DS1391, DS1392, DS1393, DS1394
| 低电压、SPI/3线接口RTC，带有涓流充电器，与同类产品相比具有更多功能和更小尺寸 |
| QV PDF |
I²C RTC，带有涓流充电器
DS1340, DS1340C
| I²C实时时钟，带有涓流充电器，可通过软件进行校准 |
| QV PDF |
I²C RTC，带有56字节NV RAM
DS1338, DS1338C, DS1338U, DS1338Z
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| QV PDF |
I²C串行实时时钟
DS1339, DS1339C, DS1339U
| RTC的多种可编程特性为系统提供更多灵活性 |
| QV PDF |
I²C串行实时时钟
DS1337, DS1337C
| 业内尺寸最小的I²C RTC，带有两个定时闹钟 |
| QV PDF |
3线串行RTC，TDFN封装
MAX6901
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| QV PDF |
SPI兼容RTC，TDFN封装
MAX6902
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| 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 |
| DS32B35 |
32.768kHz |
TCXO |
Digital |
CMOS Open-Drain |
2 |
3.5 |
1 (typ) |
5 (0-10 Years) |
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| DS32C35 |
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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 |
| DS32B35 |
YY-MM-DD/ HH:MM:SS |
I2C |
|
840 |
- |
FRAM |
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- |
| DS32C35 |
YY-MM-DD/ HH:MM:SS |
I2C |
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840 |
- |
FRAM |
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- |
| 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 |
|
500 |
6 |
None |
- |
1 |
| DS1392 |
YY-MM-DD/ HH:MM:SS:hh |
3-Wire |
|
500 |
6 |
None |
- |
1 |
| DS1393 |
YY-MM-DD/ HH:MM:SS:hh |
3-Wire |
|
500 |
6 |
None |
- |
1 |
| DS1340 |
YY-MM-DD/ HH:MM:SS |
I2C |
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800 |
12.5 |
None |
- |
0 |
| DS1338 |
YY-MM-DD/ HH:MM:SS |
I2C |
|
800 |
12.5 |
NV SRAM |
56 |
0 |
| DS1339 |
YY-MM-DD/ HH:MM:SS |
I2C |
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400 |
6 |
None |
- |
2 |
| DS1337 |
YY-MM-DD/ HH:MM:SS |
I2C |
|
425 |
6 |
None |
- |
2 |
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See All Timekeeping & Real-Time Clocks (80)
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