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參數(shù)資料
| 型號(hào)： | DS1371U+T&R |
| 廠商： | Maxim Integrated Products |
| 文件頁(yè)數(shù)： | 12/15頁(yè) |
| 文件大小： | 0K |
| 描述： | IC BINARY COUNTER 32-BIT 8-USOP |
| 產(chǎn)品培訓(xùn)模塊： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 標(biāo)準(zhǔn)包裝： | 3,000 |
| 類型： | 二進(jìn)制計(jì)數(shù)器 |
| 特點(diǎn)： | 警報(bào)器，方波輸出，監(jiān)視計(jì)時(shí)器 |
| 時(shí)間格式： | 二進(jìn)制 |
| 數(shù)據(jù)格式： | 二進(jìn)制 |
| 接口： | I²C，2 線串口 |
| 電源電壓： | 1.7 V ~ 5.5 V |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 8-TSSOP，8-MSOP（0.118"，3.00mm 寬） |
| 供應(yīng)商設(shè)備封裝： | 8-uMAX |
| 包裝： | 帶卷 (TR) |
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DS1371
6 of 15
PIN DESCRIPTION
PIN
NAME
FUNCTION
1, 2
X1, X2
These signals are connections for a standard 32.768kHz quartz crystal. The internal
oscillator circuitry is designed for operation with a crystal having a specified load
capacitance (CL) of 6pF. No external resistors or capacitors are required. For more
information about crystal selection and crystal layout considerations, refer to
Application Note 58: Crystal Considerations with Dallas Real-Time Clocks. The
DS1371 can also be driven by an external 32.768kHz oscillator. In this configuration,
the X1 pin is connected to the external oscillator signal and the X2 pin is floated.
3
WDS
Watchdog Input. A positive edge-triggered hardware interrupt input that restarts the
watchdog counter when this signal transitions from a low to a high. While WDS remains
at a static low or high, the watchdog counter continues to decrement.
4
GND
Ground
5
SDA
I2C Serial Data. Input/output for I2C data.
6
SCL
I2C Serial Clock. Input for I2C clock.
7
SQW/
INT
Square-Wave/Interrupt Output. This pin is used to output the programmable square-
wave or alarm interrupt signal. It is open drain and requires an external pullup resistor.
8
VCC
Supply Voltage Terminal
Detailed Description
The DS1371 is a real-time clock (RTC) with a I2C serial interface that provides elapsed seconds from a
user-defined starting point in a 32-bit counter (Figure 2). A 24-bit counter can be configured as either a
watchdog counter or as an alarm counter. An on-chip oscillator circuit uses a customer-supplied
32.768kHz crystal to keep time.
Oscillator Circuit
The DS1371 uses an external 32.768kHz crystal. The oscillator circuit does not require any external
resistors or capacitors to operate (Figure 2). Table 1 specifies several crystal parameters for the external
crystal. Using a crystal with the specified characteristics, the startup time is usually less than one second.
Clock Accuracy
The accuracy of the clock is dependent upon the accuracy of the crystal and the accuracy of the match
between the capacitive load of the oscillator circuit and the capacitive load for which the crystal was
trimmed. Additional error is added by crystal frequency drift caused by temperature shifts. External
circuit noise coupled into the oscillator circuit can result in the clock running fast. Figure 3 shows a
typical PC board layout for isolation of the crystal and oscillator from noise. Refer to Application Note
58: Crystal Considerations with Dallas Real-Time Clocks for detailed information.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
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| DS1372 | 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:I2C, 32-Bit, Binary Counter Clock with 64-Bit ID |
| DS1372U+ | 功能描述:實(shí)時(shí)時(shí)鐘 I2C 32 bit Binary Counter w/64 Bit ID RoHS:否 制造商:Microchip Technology 功能:Clock, Calendar. Alarm RTC 總線接口:I2C 日期格式:DW:DM:M:Y 時(shí)間格式:HH:MM:SS RTC 存儲(chǔ)容量:64 B 電源電壓-最大:5.5 V 電源電壓-最小:1.8 V 最大工作溫度:+ 85 C 最小工作溫度: 安裝風(fēng)格:Through Hole 封裝 / 箱體:PDIP-8 封裝:Tube |
| DS1372U+T&R | 制造商:Maxim Integrated Products 功能描述:RTC W/SERIAL NUMBER - Tape and Reel 制造商:Maxim Integrated Products 功能描述:IC BINARY COUNTER 32-BIT 8-USOP |
| DS1372U+T&R | 功能描述:實(shí)時(shí)時(shí)鐘 I2C 32 bit Binary Counter w/64 Bit ID RoHS:否 制造商:Microchip Technology 功能:Clock, Calendar. Alarm RTC 總線接口:I2C 日期格式:DW:DM:M:Y 時(shí)間格式:HH:MM:SS RTC 存儲(chǔ)容量:64 B 電源電壓-最大:5.5 V 電源電壓-最小:1.8 V 最大工作溫度:+ 85 C 最小工作溫度: 安裝風(fēng)格:Through Hole 封裝 / 箱體:PDIP-8 封裝:Tube |
| DS1374 | 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:I2C, 32-Bit Binary Counter Watchdog RTC with Trickle Charger and Reset Input/Output |
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