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参数资料
| 型号： | LTC2941IDCB#TRMPBF |
| 厂商： | LINEAR TECHNOLOGY CORP |
| 元件分类： | 电源管理 |
| 英文描述： | POWER SUPPLY SUPPORT CKT, PDSO6 |
| 封装： | 2 X 3 MM, LEAD FREE, PLASTIC, MO-229, DFN-6 |
| 文件页数： | 3/16页 |
| 文件大小： | 199K |
| 代理商： | LTC2941IDCB#TRMPBF |
LTC2941
11
2941fa
applicaTions inFormaTion
START and STOP Conditions
When the bus is idle, both SCL and SDA must be HIGH. A
bus master signals the beginning of a transmission with a
START condition by transitioning SDA from HIGH to LOW
while SCL is HIGH. When the master has nished com-
municating with the slave, it issues a STOP condition by
transitioning SDA from LOW to HIGH while SCL is HIGH.
The bus is then free for another transmission. When the
bus is in use, it stays busy if a repeated START (Sr) is
generatedinsteadofaSTOPcondition.TherepeatedSTART
(Sr) conditions are functionally identical to the START (S).
Data Transmission
After a START condition, the I2C bus is considered busy
and data transfer begins between a master and a slave. As
data is transferred over I2C in groups of nine bits (eight
data bits followed by an acknowledge bit), each group
takes nine SCL cycles. The transmitter releases the SDA
line during the acknowledge clock pulse and the receiver
issues an acknowledge (ACK) by pulling SDA LOW or
leaves SDA HIGH to indicate a not-acknowledge (NACK)
condition. Change of data state can only happen while
SCL is LOW.
Write Protocol
The master begins communication with a START condi-
tion followed by the seven bit slave address 1100100
and the R/W bit set to zero, as shown in Figure 5. The
LTC2941 acknowledges this by pulling SDA LOW and
then the master sends a command byte which indicates
which internal register the master is to write. The LTC2941
acknowledges and then latches the command byte into
its internal register address pointer. The master delivers
the data byte, the LTC2941 acknowledges once more and
latches the data into the desired register. The transmission
is ended when the master sends a STOP condition. If the
master continues by sending a second data byte instead
of a STOP, the LTC2941 acknowledges again, increments
its address pointer and latches the second data byte in
the following register, as shown in Figure 6.
Read Protocol
ThemasterbeginsareadoperationwithaSTARTcondition
followed by the seven bit slave address 1100100 and the
R/W bit set to zero, as shown in Figure 7. The LTC2941
acknowledges and then the master sends a command
byte which indicates which internal register the master is
to read. The LTC2941 acknowledges and then latches the
command byte into its internal register address pointer.
The master then sends a repeated START condition fol-
lowed by the same seven bit address with the R/W bit
now set to one. The LTC2941 acknowledges and sends
the contents of the requested register. The transmission
is ended when the master sends a STOP condition. If
the master acknowledges the transmitted data byte, the
LTC2941 increments its address pointer and sends the
contents of the following register, as shown in Figure 8.
SCL
SDA
START
CONDITION
STOP
CONDITION
ADDRESS
R/W
ACK
DATA
ACK
DATA
ACK
1 - 7
8
9
2941 F04
a6 - a0
b7 - b0
1 - 7
8
9
1 - 7
8
9
P
S
Figure 4. Data Transfer Over I2C or SMBus
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LTC2942CDCB#PBF | 制造商:Linear Technology 功能描述:IC, BATTERY GAS GAUGE, LI-ION, DFN-6; Battery Management Function:Fuel Gauge; Battery Type:Li-Ion; Supply Voltage Min:2.7V; Supply Voltage Max:5.5V; Battery IC Case Style:DFN; No. of Pins:6; IC Interface Type:I2C ;RoHS Compliant: Yes |
| LTC2942CDCB#TRMPBF | 功能描述:IC FUEL/GAS GAUGE LI-ION 6DFN RoHS:是 类别:集成电路 (IC) >> PMIC - 电池管理 系列:- 其它有关文件:STC3100 View All Specifications 特色产品:STC3100 - Battery Monitor IC 标准包装:4,000 系列:- 功能:燃料，电量检测计/监控器 电池化学:锂离子（Li-Ion） 电源电压:2.7 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-MiniSO 包装:带卷 (TR) 其它名称:497-10526-2 |
| LTC2942CDCB#TRPBF | 功能描述:IC FUEL/GAS GAUGE LI-ION 6DFN RoHS:是 类别:集成电路 (IC) >> PMIC - 电池管理 系列:- 标准包装:61 系列:- 功能:电源管理 电池化学:锂离子（Li-Ion）、锂聚合物（Li-Pol） 电源电压:4.35 V ~ 5.5 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:22-WFDFN 裸露焊盘 供应商设备封装:22-DFN（6x3）裸露焊盘 包装:管件 |
| LTC2942CDCB-1#PBF | 制造商:Linear Technology 功能描述:IC BATTERY FUEL GAUGE LI-ION 5.5V DFN-6 制造商:Linear Technology 功能描述:IC, BATTERY FUEL GAUGE LI-ION 5.5V DFN-6 制造商:Linear Technology 功能描述:IC, BATTERY FUEL GAUGE LI-ION 5.5V DFN-6; Battery Management Function:Fuel Gauge, Charge Controller; Battery Type:Li-Ion; Supply Voltage Min:2.7V; Supply Voltage Max:5.5V; Battery IC Case Style:DFN; No. of Pins:6 ;RoHS Compliant: Yes |
| LTC2942CDCB-1#TRMPBF | 功能描述:IC FUEL/GAS GAUGE LI-ION 1A 6DFN RoHS:是 类别:集成电路 (IC) >> PMIC - 电池管理 系列:- 其它有关文件:STC3100 View All Specifications 特色产品:STC3100 - Battery Monitor IC 标准包装:4,000 系列:- 功能:燃料，电量检测计/监控器 电池化学:锂离子（Li-Ion） 电源电压:2.7 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-MiniSO 包装:带卷 (TR) 其它名称:497-10526-2 |
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