- 您现在的位置：买卖IC网 > PDF目录1788 > DS2788E+T&R (Maxim Integrated Products)IC FUEL GAUGE W/DSP DRV 14TSSOP PDF资料下载
参数资料
| 型号： | DS2788E+T&R |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 25/32页 |
| 文件大小： | 0K |
| 描述： | IC FUEL GAUGE W/DSP DRV 14TSSOP |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| 功能： | 燃料，电量检测计/监控器 |
| 电池化学： | 锂离子（Li-Ion）、锂聚合物（Li-Pol） |
| 电源电压： | 2.5 V ~ 5.5 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 14-TSSOP（0.173"，4.40mm 宽） |
| 供应商设备封装： | 14-TSSOP |
| 包装： | 带卷 (TR) |
第1页第2页第3页第4页第5页第6页第7页第8页第9页第10页第11页第12页第13页第14页第15页第16页第17页第18页第19页第20页第21页第22页第23页第24页当前第25页第26页第27页第28页第29页第30页第31页第32页
Stand-Alone Fuel-Gauge IC with
LED Display Drivers
The 1-Wire bus must have a pullup resistor at the bus-
master end of the bus. For short line lengths, the value
of this resistor should be approximately 5k Ω . The idle
state for the 1-Wire bus is high. If, for any reason, a bus
transaction must be suspended, the bus must be left in
the idle state to properly resume the transaction later. If
the bus is left low for more than 120μs (16μs for over-
drive speed), slave devices on the bus begin to inter-
pret the low period as a reset pulse, effectively
terminating the transaction.
The DS2788 can operate in two communication speed
modes, standard and overdrive. The speed mode is
determined by the input logic level of the OVD pin with
a logic 0 selecting standard speed and a logic 1
selecting overdrive speed. The OVD pin must be at a
stable logic level of 0 or 1 before initializing a transac-
tion with a reset pulse. All 1-Wire devices on a multin-
ode bus must operate at the same communication
speed for proper operation. 1-Wire timing for both stan-
dard and overdrive speeds are listed in the Electrical
Characteristics: 1-Wire Interface tables.
Transaction Sequence
The protocol for accessing the DS2788 through the
1-Wire port is as follows:
? Initialization
? Net Address Commands
? Function Command
V PULLUP
(2.0V TO 5.5V)
? Transaction/Data
The sections that follow describe each of these steps in
detail.
All transactions of the 1-Wire bus begin with an initial-
ization sequence consisting of a reset pulse transmitted
by the bus master, followed by a presence pulse simul-
taneously transmitted by the DS2788 and any other
slaves on the bus. The presence pulse tells the bus
master that one or more devices are on the bus and
ready to operate. For more details, see the 1-Wire
Signaling section.
Net Address Commands
Once the bus master has detected the presence of one
or more slaves, it can issue one of the net address
commands described in the following paragraphs. The
name of each ROM command is followed by the 8-bit
op code for that command in square brackets.
Figure 25 presents a transaction flowchart of the net
address commands.
Read Net Address [33h or 39h]. This command allows
the bus master to read the DS2788 ’s 1-Wire net
address. This command can only be used if there is a
single slave on the bus. If more than one slave is pre-
sent, a data collision occurs when all slaves try to trans-
mit at the same time (open drain produces a
wired-AND result). The RNAOP bit in the Status register
selects the op code for this command, with RNAOP = 0
indicating 33h and RNAOP = 1 indicating 39h.
Rx
BUS MASTER
4.7k Ω
0.2 μ A
DS2788 1-Wire PORT
Rx
Tx
Figure 24. 1-Wire Bus Interface Circuitry
Rx = RECEIVE
Tx = TRANSMIT
(TYP)
100 Ω MOSFET
Tx
______________________________________________________________________________________
25
相关PDF资料 |
PDF描述 |
|---|---|
| DS2790G+T&R | IC FUEL GAUGE BATT 28-TDFN |
| DS3881E+T&R | IC CCFL CONTROL 24TSSOP |
| DS3882E+T&R | IC CCFL CNTRLR DUAL 28TSSOP |
| DS3984T+ | IC CCFL CNTRLR 4CH 32-TQFP |
| DS3988T+ | IC CCFL CNTRLR 8CH 48TQFP |
相关代理商/技术参数 |
参数描述 |
|---|---|
| DS2788EVKIT+ | 功能描述:电源管理IC开发工具 RoHS:否 制造商:Maxim Integrated 产品:Evaluation Kits 类型:Battery Management 工具用于评估:MAX17710GB 输入电压: 输出电压:1.8 V |
| DS2788K | 功能描述:电源管理IC开发工具 RoHS:否 制造商:Maxim Integrated 产品:Evaluation Kits 类型:Battery Management 工具用于评估:MAX17710GB 输入电压: 输出电压:1.8 V |
| DS2790 | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:Programmable 1-Cell Li-Ion Fuel Gauge and Protector |
| DS2790E | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:Programmable 1-Cell Li-Ion Fuel Gauge and Protector |
| DS2790E+ | 功能描述:IC FUEL GAUGE BATT 28TSSOP RoHS:是 类别:集成电路 (IC) >> PMIC - 电池管理 系列:- 标准包装:1 系列:- 功能:充电管理 电池化学:锂离子（Li-Ion）、锂聚合物（Li-Pol） 电源电压:3.75 V ~ 6 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:SC-74A，SOT-753 供应商设备封装:SOT-23-5 包装:剪切带 (CT) 产品目录页面:669 (CN2011-ZH PDF) 其它名称:MCP73831T-2ACI/OTCT |
发布紧急采购，3分钟左右您将得到回复。