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参数资料
| 型号： | DS1308U-33+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 11/16页 |
| 文件大小： | 0K |
| 描述： | IC RTC 56BYTE NVRAM I2C 8UMAX |
| 标准包装： | 50 |
| 类型： | 时钟/日历 |
| 特点： | 闰年，NVSRAM，方波输出 |
| 存储容量： | 56B |
| 时间格式： | HH:MM:SS（12/24 小时） |
| 数据格式： | YY-MM-DD-dd |
| 接口： | I²C，2 线串口 |
| 电源电压： | 3 V ~ 5.5 V |
| 电压 - 电源，电池： | 1.3 V ~ 5.5 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-TSSOP，8-MSOP（0.118"，3.00mm 宽） |
| 供应商设备封装： | 8-uMAX |
| 包装： | 管件 |
DS1308
Low-Current I2C RTC with 56-Byte NV RAM
4
Maxim Integrated
POWER-UP/DOWN CHARACTERISTICS
(TA = -40NC to +85NC, unless otherwise noted.) (Notes 2, 16)
CAPACITANCE
(TA = +25NC, unless otherwise noted.) (Note 16)
Warning: Negative undershoots below -0.3V while the part is in battery-backed mode may cause loss of data.
Note 2: Limits are 100% production tested at TA = +25NC and TA = +85NC. Limits over the operating temperature range and
relevant supply voltage are guaranteed by design and characterization. Typical values are not guaranteed.
Note 3: SCL clocking at max frequency. VSCL = 0V to VCC.
Note 4: Specified with I2C bus inactive. Timekeeping and square-wave functions operational.
Note 5: CH = ECLK = SQWE = 0.
Note 6: CH = ECLK = 0, SQWE = RS1 = RS0 = 1, IOUT = 0mA.
Note 7: CH = 1. ECLK = SQWE = 0.
Note 8: The minimum SCL clock frequency is limited by the bus timeout feature, which resets the serial bus interface if SCL is
held low for tTIMEOUT.
Note 9: After this period, the first clock pulse is generated.
Note 10: A device must internally provide a hold time of at least 300ns for the SDA signal (referenced to the VIHMIN of the SCL
signal) to bridge the undefined region of the falling edge of SCL.
Note 11: The maximum tHD:DAT has only to be met if the device does not stretch the low period (tLOW) of the SCL signal.
Note 12: A fast-mode device can be used in a standard-mode system, but the requirement tSU:DAT R to 250ns must then be met.
This is automatically the case if the device does not stretch the low period of the SCL signal. If such a device does stretch
the low period of the SCL signal, it must output the next data bit to the SDA line tRMAX + tSU:DAT = 1000 + 250 = 1250ns
before the SCL line is released.
Note 13: CB is the total capacitance of one bus line, including all connected devices, in pF.
Note 14: The parameter tOSF is the period of time the oscillator must be stopped for the OSF flag to be set over the voltage range
of 2.4V P VCC P VCCMAX.
Note 15: The DS1308 can detect any single SCL clock held low longer than tTIMEOUTMIN. The device’s I2C interface is in reset
state and can receive a new START condition when SCL is held low for at least tTIMEOUTMAX. Once the part detects this
condition the SDA output is released. The oscillator must be running for this function to work.
Note 16: Guaranteed by design and not 100% production tested.
PARAMETER
SYMBOL
MIN
TYP
MAX
UNITS
Recovery at Power-Up
tREC
1
2
ms
VCC Slew Rate (VPF to 0V)
tVCCF
1/50
V/Fs
VCC Slew Rate (0V to VPF)
tVCCR
1/1
V/Fs
PARAMETER
SYMBOL
MIN
TYP
MAX
UNITS
Input Capacitance
CI
10
pF
I/O Capacitance
CO
10
pF
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相关代理商/技术参数 |
参数描述 |
|---|---|
| DS1308U-33+ | 功能描述:实时时钟 LOW CUR 3.3V I2C RTC RoHS:否 制造商:Microchip Technology 功能:Clock, Calendar. Alarm RTC 总线接口:I2C 日期格式:DW:DM:M:Y 时间格式:HH:MM:SS RTC 存储容量:64 B 电源电压-最大:5.5 V 电源电压-最小:1.8 V 最大工作温度:+ 85 C 最小工作温度: 安装风格:Through Hole 封装 / 箱体:PDIP-8 封装:Tube |
| DS1308U-33+T | 功能描述:实时时钟 LOW CUR 3.3V I2C RTC RoHS:否 制造商:Microchip Technology 功能:Clock, Calendar. Alarm RTC 总线接口:I2C 日期格式:DW:DM:M:Y 时间格式:HH:MM:SS RTC 存储容量:64 B 电源电压-最大:5.5 V 电源电压-最小:1.8 V 最大工作温度:+ 85 C 最小工作温度: 安装风格:Through Hole 封装 / 箱体:PDIP-8 封装:Tube |
| DS1310 | 制造商:未知厂家 制造商全称:未知厂家 功能描述: |
| DS13-1000 | 功能描述:固态继电器-PCB安装 HIGH FREQUENCY RELAY RoHS:否 制造商:Omron Electronics 控制电压范围: 负载电压额定值:40 V 负载电流额定值:120 mA 触点形式:1 Form A (SPST-NO) 输出设备:MOSFET 封装 / 箱体:USOP-4 安装风格:SMD/SMT |
| DS13-1000S | 制造商:TE Connectivity 功能描述:High Performance Solid State Relays |
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