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參數資料
| 型號： | DS2786BG+T&R |
| 廠商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分類： | 電源管理 |
| 英文描述： | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO10 |
| 封裝： | 3 X 3 MM, ROHS COMPLIANT, TDFN-10 |
| 文件頁數： | 11/21頁 |
| 文件大?。?/td> | 363K |
| 代理商： | DS2786BG+T&R |
DS2786B
Stand-Alone OCV-Based Fuel Gauge
______________________________________________________________________________________
19
Slave Address
A bus master initiates communication with a slave
device by issuing a START condition followed by a
slave address (SAddr) and the read/write (R/W) bit.
When the bus is idle, the DS2786B continuously moni-
tors for a START condition followed by its slave
address. When the IC receives an address that match-
es its slave address, it responds with an Acknowledge
bit during the clock period following the R/W bit. The
DS2786BG-C3 7-bit slave address is 0110110. The
upper 3 bits are fixed at 011; the lower 4 bits can be
changed by writing the I2C Address Configuration
Register at location 7Dh.
Read/Write Bit
The R/W bit following the slave address determines the
data direction of subsequent bytes in the transfer. R/W
= 0 selects a write transaction, with the following bytes
being written by the master to the slave. R/W = 1 selects
a read transaction, with the following bytes being read
from the slave by the master. With the ADDR3–ADDR0
bits at their default of 0110, writes occur using address
0x6Ch, while reads occur at 0x6Dh.
Bus Timing
The DS2786B is compatible with any bus timing up to
400kHz. No special configuration is required to operate
at any speed.
2-Wire Command Protocols
The command protocols involve several transaction for-
mats. The simplest format consists of the master writing
the START bit, slave address, and R/W bit, and then
monitoring the Acknowledge bit for presence of the
DS2786B. More complex formats such as the write
data, read data, and function command protocols write
data, read data, and execute device-specific opera-
tions. All bytes in each command format require the
slave or host to return an Acknowledge bit before con-
tinuing with the next byte. Each function command defi-
nition outlines the required transaction format. Table 5
applies to the transaction formats.
ADDRESS 7Dh
BIT 7
BIT 6
BIT 5
BIT 4
BIT 3
BIT 2
BIT 1
BIT 0
ADDR3
ADDR2
ADDR1
ADDR0
X
X—RESERVED.
ADDR3:0—USER-ADJUSTABLE BITS OF THE DS2786BG-C3’S I2C ADDRESS. FACTORY DEFAULT IS 0110.
Figure 24. I2C Address Configuration Register Format
BIT 7
BIT 6
BIT 5
BIT 4
BIT 3
BIT 2
BIT 1
BIT 0
0
1
ADDR3
ADDR2
ADDR1
ADDR0
R/W
Figure 25. DS2786B I2C Address Byte Format
KEY
DESCRIPTION
S
START bit
SAddr
Slave address (7 bit)
FCmd
Function command byte
MAddr
Memory address byte
Data
Data byte written by master
A
Acknowledge bit—master
N
No acknowledge—master
KEY
DESCRIPTION
Sr
Repeated START
W
R/W bit = 0
R
R/W bit = 1
P
STOP bit
Data
Data byte returned by slave
A
Acknowledge bit—slave
N
No acknowledge—slave
Table 5. 2-Wire Protocol Key
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相關代理商/技術參數 |
參數描述 |
|---|---|
| DS2786BK | 功能描述:電源管理IC開發(fā)工具 RoHS:否 制造商:Maxim Integrated 產品:Evaluation Kits 類型:Battery Management 工具用于評估:MAX17710GB 輸入電壓: 輸出電壓:1.8 V |
| DS2786G+ | 功能描述:電池管理 Stand-Alone OCV Based Fuel Gauge RoHS:否 制造商:Texas Instruments 電池類型:Li-Ion 輸出電壓:5 V 輸出電流:4.5 A 工作電源電壓:3.9 V to 17 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:VQFN-24 封裝:Reel |
| DS2786G+T&R | 制造商:Maxim Integrated Products 功能描述:STAND ALONE OCV BASED FUEL GAUGE LF - Tape and Reel 制造商:Maxim Integrated Products 功能描述:IC FUEL GAUGE OCV 10-TDFN 制造商:Maxim Integrated Products 功能描述:FUEL GAUGE STANDALONE OCV TDFN-10 制造商:Maxim Integrated Products 功能描述:FUEL GAUGE STANDALONE OCV, TDFN-10 |
| DS2786G+T&R | 功能描述:電池管理 Stand-Alone OCV Based Fuel Gauge RoHS:否 制造商:Texas Instruments 電池類型:Li-Ion 輸出電壓:5 V 輸出電流:4.5 A 工作電源電壓:3.9 V to 17 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:VQFN-24 封裝:Reel |
| DS2786G+TR | 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:Stand-Alone OCV-Based Fuel Gauge |
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