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参数资料
| 型号： | DS3930E+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 12/12页 |
| 文件大小： | 0K |
| 描述： | IC POT NV HEX I/O MEM 20-TSSOP |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 74 |
| 接片： | 256 |
| 电阻（欧姆）： | 16.5k |
| 电路数： | 6 |
| 温度系数： | 标准值 ±250 ppm/°C |
| 存储器类型： | 非易失 |
| 接口： | I²C（设备位址） |
| 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： | 20-TSSOP（0.173"，4.40mm 宽） |
| 供应商设备封装： | 20-TSSOP |
| 包装： | 管件 |
| 产品目录页面： | 1431 (CN2011-ZH PDF) |
DS3930
Hex Nonvolatile Potentiometer with
I/O and Memory
_____________________________________________________________________
9
2-Wire Serial Port Operation
The 2-wire serial port interface supports a bidirectional
data transmission protocol with device addressing. A
device that sends data on the bus is defined as a trans-
mitter, and a device receiving data as a receiver. The
device that controls the message is called a “master.”
The devices that are controlled by the master are
“slaves.” The bus must be controlled by a master
device that generates the serial clock (SCL), controls
the bus access, and generates the start and stop con-
ditions. The DS3930 operates as a slave on the 2-wire
bus. Connections to the bus are made through the
open-drain I/O lines, SDA and SCL. The following I/O
terminals control the 2-wire serial port: SDA, SCL, and
A0. Timing diagrams for the 2-wire serial port can be
found in Figures 3 and 5. Timing information for the 2-
wire serial port is provided in the AC Electrical
Characteristics table for 2-wire serial communications.
The following bus protocol has been defined:
Data transfer can be initiated only when the bus is
not busy.
During data transfer, the data line must remain sta-
ble whenever the clock line is high. Changes in the
data line while the clock line is high are interpreted
as control signals.
Accordingly, the following bus conditions have been
defined:
Bus Not Busy: Both data and clock lines remain high.
Start Data Transfer: A change in the state of the data
line from high to low while the clock is high defines a
start condition.
Stop Data Transfer: A change in the state of the data
line from low to high while the clock line is high defines
the stop condition.
Data Valid: The state of the data line represents valid
data when, after a start condition, the data line is stable
for the duration of the high period of the clock signal. The
data on the line can be changed during the low period of
the clock signal. There is one clock pulse per bit of data.
Figures 3 and 5 detail how data transfer is accomplished
on the 2-wire bus. Depending upon the state of the R/W
bit, two types of data transfer are possible.
Each data transfer is initiated with a start condition and
STOP
CONDITION
OR REPEATED
START
CONDITION
REPEATED IF MORE BYTES
ARE TRANSFERRED
ACK
START
CONDITION
ACK
ACKNOWLEDGEMENT
SIGNAL FROM RECEIVER
ACKNOWLEDGEMENT
SIGNAL FROM RECEIVER
SLAVE ADDRESS
MSB
SCL
SDA
R/W
DIRECTION
BIT
12
6
7
8
9
12
8
9
3–7
Figure 3. 2-Wire Data Transfer Protocol
PULLUP
CTRL
I/O PIN
SETTING
RI/O
VCC
ESD
I/O
INPUT
Figure 2. I/O Cell
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相关代理商/技术参数 |
参数描述 |
|---|---|
| DS3930E/T&R | 制造商:Maxim Integrated Products 功能描述:HEX NV POT WITH I/O & MEM T&R - Tape and Reel |
| DS3930E/T&R | 功能描述:数字电位计 IC RoHS:否 制造商:Maxim Integrated 电阻:200 Ohms 温度系数:35 PPM / C 容差:25 % POT 数量:Dual 每 POT 分接头:256 弧刷存储器:Volatile 缓冲刷: 数字接口:Serial (3-Wire, SPI) 描述/功能:Dual Volatile Low Voltage Linear Taper Digital Potentiometer 工作电源电压:1.7 V to 5.5 V 电源电流:27 uA 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:TQFN-16 封装:Reel |
| DS3930E+ | 功能描述:数字电位计 IC Hex Nonvolatile w/I/O & Memory RoHS:否 制造商:Maxim Integrated 电阻:200 Ohms 温度系数:35 PPM / C 容差:25 % POT 数量:Dual 每 POT 分接头:256 弧刷存储器:Volatile 缓冲刷: 数字接口:Serial (3-Wire, SPI) 描述/功能:Dual Volatile Low Voltage Linear Taper Digital Potentiometer 工作电源电压:1.7 V to 5.5 V 电源电流:27 uA 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:TQFN-16 封装:Reel |
| DS3930E+T&R | 制造商:Maxim Integrated Products 功能描述: 制造商:Maxim Integrated Products 功能描述:DGTL POTENTIOMETER 256POS 16.5KOHM HEX 20TSSOP - Tape and Reel 制造商:Maxim Integrated Products 功能描述:IC POT NV HEX I/O MEM 20-TSSOP 制造商:Maxim Integrated Products 功能描述:Digital Potentiometer ICs Hex Nonvolatile w/I/O & Memory |
| DS3930E+T&R | 功能描述:数字电位计 IC Hex Nonvolatile w/I/O & Memory RoHS:否 制造商:Maxim Integrated 电阻:200 Ohms 温度系数:35 PPM / C 容差:25 % POT 数量:Dual 每 POT 分接头:256 弧刷存储器:Volatile 缓冲刷: 数字接口:Serial (3-Wire, SPI) 描述/功能:Dual Volatile Low Voltage Linear Taper Digital Potentiometer 工作电源电压:1.7 V to 5.5 V 电源电流:27 uA 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:TQFN-16 封装:Reel |
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