参数资料
| 型号： | DS1342U+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 10/16页 |
| 文件大小： | 0K |
| 描述： | IC RTC I2C W/ALARM 8USOP |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 50 |
| 类型： | 时钟/日历 |
| 特点： | 警报器，闰年，方波输出 |
| 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： | 1.8 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 |
3
Maxim Integrated
Low-Current I2C RTCs for High-ESR Crystals
DS1341/DS1342
AC ELECTRICAL CHARACTERISTICS
(VCC = +1.8V to +5.5V, TA = -40NC to +85NC, unless otherwise noted.) (Note 2, Figure 1)
CRYSTAL PARAMETERS
Note 2:
Limits at -40NC are guaranteed by design; not production tested.
Note 3:
Voltage referenced to ground.
Note 4:
Specified with I2C bus inactive. Oscillator operational, INTCN = 1, ECLK = 0.
Note 5:
Applies to CLKIN/INTA and SQW/INTB only.
Note 6:
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 7:
After this period, the first clock pulse is generated.
Note 8:
A device must internally provide a hold time of at least 300ns for the SDA signal (referred to the VIHMIN of the SCL sig-
nal) to bridge the undefined region of the falling edge of SCL.
Note 9:
The maximum tHD:DAT need only be met if the device does not stretch the low period (tLOW) of the SCL signal.
Note 10: 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.
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
SCL Clock Frequency
fSCL
(Note 6)
400
kHz
Bus Free Time Between a STOP
and START Condition
tBUF
1.3
F
s
Hold Time (Repeated) START
Condition
tHD:STA
(Note 7)
0.6
F
s
Low Period of SCL Clock
tLOW
1.3
F
s
High Period of SCL Clock
tHIGH
0.6
F
s
Data Hold Time
tHD:DAT
(Notes 8, 9)
0
0.9
F
s
Data Setup Time
tSU:DAT
(Note 10)
100
ns
Setup Time for a Repeated
START Condition
tSU:STA
0.6
F
s
Rise Time of Both SDA and SCL
Signals
tR
(Note 11)
20 +
0.1CB
300
ns
Fall Time for Both SDA and SCL
Signals
tF
(Note 11)
20 +
0.1CB
300
ns
Setup Time for STOP Condition
tSU:STO
0.6
F
s
Capacitive Load for Each Bus
Line
CB
(Note 11)
400
pF
I/O Capacitance
CI/O
(Note 12)
10
pF
SCL Spike Suppression
tSP
(Note 12)
30
ns
Oscillator Stop Flag (OSF) Delay
tOSF
(Note 13)
25
100
ms
Timeout Interval
tTIMEOUT (Note 14)
25
35
ms
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
Nominal Frequency
fO
32.768
kHz
Series Resistance
ESR
100
kI
Load Capacitance
CL
DS1341
6
pF
DS1342
12.5
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相关代理商/技术参数 |
参数描述 |
|---|---|
| DS1342U+ | 功能描述:实时时钟 I2C RTC 12pF 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 |
| DS1342U+T&R | 制造商:Maxim Integrated Products 功能描述:I2C RTC 12.5PF UMAX PB FREE T&R - Tape and Reel 制造商:Maxim Integrated Products 功能描述:MXMDS1342U+T&R LOW-CURRENT IC RTCS FOR H 制造商:Maxim Integrated Products 功能描述:IC RTC I2C W/ALARM 8USOP 制造商:Maxim Integrated Products 功能描述:Real Time Clock I2C RTC 12pF |
| DS1342U+T&R | 功能描述:实时时钟 I2C RTC 12pF 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 |
| DS1342U+TR | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:Low-Current I2C RTCs for High-ESR Crystals |
| DS1343 | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:Low-Current SPI/3-Wire RTCs |
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