Maxim > 方案 > 打印机与传真机
实时时钟
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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 |
带有恒压涓流充电器的RTC
DS12CR887, DS12R885, DS12R887
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| 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 |
便携系统控制器
DS1677
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| QV PDF |
便携系统控制器
DS1673
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| QV PDF |
便携系统控制器
DS1670
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| Key Specifications:
Oscillator Modules |
| Part Number |
Frequency |
Oscillator Type |
Tuning Adjustment Type |
Frequency Output Type |
Freq. Stability vs. Temp. @0 to +40°C (±ppm) |
Freq. Stab. vs.Temp. @-40 to 0/ +40 to 85°C (±ppm) |
Frequency Stability vs. Supply Voltage (±ppm/V) |
Frequency Stability vs. Aging (±ppm) |
Supply Voltage (V) |
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DS32B35
|
32.768kHz
|
TCXO
|
Digital
|
CMOS Open-Drain
|
2
|
3.5
|
1 (typ)
|
5 (0-10 Years)
|
2.7 to 3.63
3.3
|
|
DS32C35
|
32.768kHz
|
TCXO
|
Digital
|
CMOS Open-Drain
|
2
|
3.5
|
1 (typ)
|
5 (0-10 Years)
|
2.7 to 3.63
3.3
|
| See All Oscillator Modules (28) |
| Key Specifications:
Timekeeping & Real-Time Clocks |
| Part Number |
Functions |
Date/ Time Format (hh = sec/100) |
Interface |
Supply Voltage (V) |
Time- keeping Current (typ) (nA) |
CL, Load Capacitance (pF) |
Memory Type |
Memory Size (Bytes) |
Number of Time of Day Alarms |
|
DS32B35
|
-
|
YY-MM-DD/ HH:MM:SS
|
I2C
|
2.7 to 3.63
3.3
|
840
|
-
|
FRAM
|
2K
8K
|
-
|
|
DS32C35
|
-
|
YY-MM-DD/ HH:MM:SS
|
I2C
|
2.7 to 3.63
3.3
|
840
|
-
|
FRAM
|
2K
8K
|
-
|
|
DS1394
|
-
|
YY-MM-DD/ HH:MM:SS:hh
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SPI
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3.3
5
|
500
|
6
|
None
|
-
|
1
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DS1390
|
-
|
YY-MM-DD/ HH:MM:SS:hh
|
SPI
|
1.8
3
3.3
5
|
500
|
6
|
None
|
-
|
1
|
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DS1391
|
-
|
YY-MM-DD/ HH:MM:SS:hh
|
SPI
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1.8
3
3.3
5
|
500
|
6
|
None
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-
|
1
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DS1392
|
-
|
YY-MM-DD/ HH:MM:SS:hh
|
3-Wire
|
1.8
3
3.3
5
|
500
|
6
|
None
|
-
|
1
|
|
DS1393
|
-
|
YY-MM-DD/ HH:MM:SS:hh
|
3-Wire
|
1.8
3
3.3
5
|
500
|
6
|
None
|
-
|
1
|
|
DS12CR887
|
-
|
YY-MM-DD/ HH:MM:SS
|
Multiplexed
|
3.3
5
|
-
|
-
|
NV SRAM
|
114
|
1
|
|
DS12R885
|
-
|
YY-MM-DD/ HH:MM:SS
|
Multiplexed
|
3.3
5
|
800
|
12.5
|
NV SRAM
|
114
|
1
|
|
DS12R887
|
-
|
YY-MM-DD/ HH:MM:SS
|
Multiplexed
|
3.3
5
|
-
|
-
|
NV SRAM
|
114
|
1
|
|
DS1340
|
-
|
YY-MM-DD/ HH:MM:SS
|
I2C
|
1.8
3
3.3
5
|
800
|
12.5
|
None
|
-
|
0
|
|
DS1337
|
-
|
YY-MM-DD/ HH:MM:SS
|
I2C
|
2
3
3.3
5
|
425
|
6
|
None
|
-
|
2
|
|
DS1670
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|
YY-MM-DD/ HH:MM:SS
|
3-Wire
|
3.3
|
300
|
6
|
None
|
-
|
1
|
|
DS1673
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|
YY-MM-DD/ HH:MM:SS
|
3-Wire
|
3
5
|
300
|
6
|
None
|
-
|
1
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DS1677
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|
YY-MM-DD/ HH:MM:SS
|
3-Wire
|
5
|
300
|
6
|
None
|
-
|
1
|
| See All Timekeeping & Real-Time Clocks (85) |
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