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Maxim > 方案 > 电信交换机(PBX和中心局)
实时时钟
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| 显示 |
标题/型号 |
关键优势 |
| QV PDF |
3.3V、单芯片、1Mb非易失SRAM，带有时钟
DS3045W
| DS3045W 3.3V单芯片1M非易失SRAM，集成RTC |
| QV PDF |
3.3V、单芯片、256kb非易失SRAM，带有时钟
DS3030W
| DS3030W 3.3V单芯片256k非易失SRAM，集成RTC |
| QV PDF |
3.3V、单芯片、16Mb非易失SRAM，带有时钟
DS3070W
| 业内首款、也是唯一的单芯片、可回流焊接的NV SRAM模块 |
| 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 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 |
4M、非易失、Y2K兼容的时钟RAM
DS1557
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| QV PDF |
1M、非易失、Y2K兼容的时钟RAM
DS1556, DS1556P
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| QV PDF |
256k非易失、Y2K兼容的时钟RAM
DS1554
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| Key Specifications:
Memory (EPROM, EEPROM, ROM, NV SRAM) |
| Part Number |
Memory Type |
Memory Size |
Bus Type |
Real-Time Clock |
DIP with Internal Battery |
PowerCap Package |
Battery Monitor |
With GPIO |
Single Piece Module |
Features |
Supply Voltage (min) (V) |
Supply Voltage (max) (V) |
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DS3070W
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NV SRAM
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2M x 8
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Parallel
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Yes
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No
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No
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No
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No
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Yes
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3
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3.6
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DS3030W
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NV SRAM
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32K x 8
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Parallel
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Yes
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No
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No
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No
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No
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Yes
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3
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3.6
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DS3045W
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NV SRAM
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128K x 8
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Parallel
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Yes
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No
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No
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No
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No
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Yes
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3
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3.6
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| See All Memory (EPROM, EEPROM, ROM, NV SRAM) (69) |
| Key Specifications:
Timekeeping & Real-Time Clocks |
| Part Number |
Functions |
Time Format (hh = sec/100) |
Date Format |
Interface |
Supply Voltage (V) |
Time- keeping Current (typ) (nA) |
CL, Load Capacitance (pF) |
Memory Type |
Memory Size (Bytes) |
Number of Time of Day Alarms |
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DS3070W
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HH:MM:SS
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YYYY-MM-DD
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Bytewide
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3.3
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-
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-
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NV SRAM
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2M
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1
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DS3030W
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HH:MM:SS
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YYYY-MM-DD
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Bytewide
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3.3
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-
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-
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NV SRAM
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32K
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1
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DS3045W
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HH:MM:SS
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YYYY-MM-DD
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Bytewide
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3.3
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-
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-
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NV SRAM
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128K
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1
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DS1390
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-
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HH:MM:SS:hh
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YY-MM-DD
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SPI
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1.8
3
3.3
5
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500
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6
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None
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-
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1
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DS1391
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-
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HH:MM:SS:hh
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YY-MM-DD
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SPI
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1.8
3
3.3
5
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500
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6
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None
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-
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1
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DS1392
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-
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HH:MM:SS:hh
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YY-MM-DD
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3-Wire
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1.8
3
3.3
5
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500
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6
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None
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-
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1
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DS1393
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-
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HH:MM:SS:hh
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YY-MM-DD
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3-Wire
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1.8
3
3.3
5
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500
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6
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None
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-
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1
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DS12CR887
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-
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HH:MM:SS
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YY-MM-DD
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Multiplexed
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3.3
5
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-
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-
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NV SRAM
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114
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1
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DS12R885
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-
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HH:MM:SS
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YY-MM-DD
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Multiplexed
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3.3
5
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800
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12.5
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NV SRAM
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114
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1
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DS12R887
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-
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HH:MM:SS
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YY-MM-DD
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Multiplexed
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3.3
5
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-
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-
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NV SRAM
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114
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1
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DS1340
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-
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HH:MM:SS
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YY-MM-DD
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I2C
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1.8
3
3.3
5
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800
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12.5
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None
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-
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0
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DS1338
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-
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HH:MM:SS
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YY-MM-DD
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I2C
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1.8
3
3.3
5
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800
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12.5
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NV SRAM
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56
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0
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DS1339
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-
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HH:MM:SS
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YY-MM-DD
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I2C
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2
3
3.3
5
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400
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6
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None
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-
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2
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DS1337
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-
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HH:MM:SS
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YY-MM-DD
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I2C
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2
3
3.3
5
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425
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6
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None
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-
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2
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DS1554
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HH:MM:SS
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YYYY-MM-DD
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Bytewide
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3.3
5
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-
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-
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NV SRAM
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32K
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1
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DS1556
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HH:MM:SS
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YYYY-MM-DD
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Bytewide
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3.3
5
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-
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-
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NV SRAM
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128K
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1
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DS1557
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HH:MM:SS
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YYYY-MM-DD
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Bytewide
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3.3
5
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-
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-
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NV SRAM
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512K
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1
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| See All Timekeeping & Real-Time Clocks (86) |
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法律声明
© 2008 Maxim Integrated Products, Dallas Semiconductor版权所有
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