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EM3027_13 参数 Datasheet PDF下载

EM3027_13图片预览
型号: EM3027_13
PDF下载: 下载PDF文件 查看货源
内容描述: 实时时钟,带有I2C或SPI ,晶体温度补偿,电池切换和涓流充电器 [Real Time Clock with I2C or SPI, Crystal Temperature Compensation, Battery Switchover and Trickle Charger]
分类和应用: 晶体电池温度补偿时钟
文件页数/大小: 28 页 / 1086 K
品牌: EMMICRO [ EM MICROELECTRONIC - MARIN SA ]
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EM3027  
10 AC Characteristics  
10.1 AC characteristics I2C  
VSS = 0V and TA=-40 to +125°C, unless otherwise specified  
PARAMETER  
SYMBOL  
CONDITIONS  
MIN  
TYP  
MAX  
UNITS  
400  
300  
100  
Vcc 3.0V  
Vcc >1.8V  
Vcc>1.4V  
Vcc 3.0V  
Vcc >1.8V  
Vcc>1.4V  
Vcc 3.0V  
Vcc >1.8V  
Vcc>1.4V  
Vcc 3.0V  
Vcc >1.8V  
Vcc>1.4V  
Vcc 3.0V  
Vcc >1.8V  
Vcc>1.4V  
Vcc 3.0V  
Vcc >1.8V  
Vcc>1.4V  
Vcc 3.0V  
Vcc >1.8V  
Vcc>1.4V  
Vcc 3.0V  
Vcc >1.8V  
Vcc>1.4V  
Vcc 3.0V  
Vcc >1.8V  
Vcc>1.4V  
Vcc 3.0V  
Vcc >1.8V  
Vcc>1.4V  
Vcc 3.0V  
Vcc >1.8V  
Vcc>1.4V  
Vcc 3.0V  
Vcc >1.8V  
Vcc>1.4V  
Vcc 3.0V  
Vcc >1.8V  
Vcc>1.4V  
SCL Clock Frequency  
fSCL  
kHz  
0.6  
0.8  
1.0  
Bus Free Time Between STOP and  
START Condition  
tBUF  
tHD:STA  
tLOW  
μs  
μs  
μs  
μs  
ns  
ns  
ns  
μs  
μs  
ns  
ns  
0.3  
0.4  
0.5  
Hold Time (Repeated) START  
Condition  
1.3  
1.7  
4.5  
0.6  
0.7  
0.9  
0.3  
0.4  
0.5  
0.3  
0.4  
0.5  
0.3  
0.4  
0.5  
1.2  
1.5  
4.0  
0.9  
1.1  
3.5  
LOW Period of SCL Clock  
HIGH Period of SCL Clock  
Setup Time START Condition  
Data Hold Time  
tHIGH  
tSU:STA  
tHD:DAT  
tSU:DAT  
tVD:DAT  
tVD:ACK  
tR  
Data Setup Time  
Data Valid Time  
Data Valid Acknowledge Time  
200  
300  
1000  
200  
300  
400  
Rise Time of Both SDA and SCL  
Signals  
Fall Time of Both SDA and SCL  
Signals (See note 1)  
tF  
0.3  
0.4  
0.5  
Setup Time (Repeated) STOP  
Condition  
tSU:STO  
ns  
ns  
Length of spikes suppressed by the  
input filter on SCL and SDA  
tSP  
50  
Capacitive Load For Each Bus Line  
I/O Capacitance (SDA, SCL)  
CB  
200  
10  
pF  
pF  
CI/O  
Table 13: I2C AC characteristics  
Parameters are guaranteed by design. They are not tested in production.  
Calculation of external pullup resistor  
22  
www.emmicroelectronic.com  
Copyright 2013, EM Microelectronic-Marin SA  
3027-DS.doc, Version 8.0, 25-Jan-13