收藏本站

DS2433
Figure 8. HARDWARE CONFIGURATION
R PU *
*5k ? IS ADEQUATE FOR READING THE DS2433. TO WRITE TO A SINGLE DEVICE, A 2.2k ? RESISTOR AND V PUP OF AT LEAST 4.0V IS
SUFFICIENT. FOR WRITING MULTIPLE DS2433s SIMULTANEOUSLY OR OPERATION AT LOW V PUP , THE R PU SHOULD BE BYPASSED
BY A LOW-IMPEDANCE PULLUP TO V PUP WHILE THE DEVICE COPIES THE SCRATCHPAD TO EEPROM. DEPENDING ON THE 1-Wire
COMMUNICATION SPEED AND THE BUS LOAD CHARACTERISTICS, THE OPTIMAL PULLUP RESISTOR (R PU ) VALUE WILL BE IN THE
1.5k ? TO 5k ? RANGE.
1-Wire BUS SYSTEM
The 1-Wire bus is a system which has a single bus master and one or more slaves. In all instances the
DS2433 is a slave device. The bus master is typically a microcontroller. The discussion of this bus system
is broken down into three topics: hardware configuration, transaction sequence, and 1-Wire signaling
(signal types and timing). A 1-Wire protocol defines bus transactions in terms of the bus state during
specific time slots that are initiated on the falling edge of sync pulses from the bus master.
HARDWARE CONFIGURATION
The 1-Wire bus has only a single line by definition; it is important that each device on the bus be able to
drive it at the appropriate time. To facilitate this, each device attached to the 1-Wire bus must have open
drain or 3-state outputs. The 1-Wire port of the DS2433 is open drain with an internal circuit equivalent
to that shown in Figure 8. A multidrop bus consists of a 1-Wire bus with multiple slaves attached. At
regular speed the 1-Wire bus has a maximum data rate of 16.3kbps. The speed can be boosted to 142kbps
by activating the Overdrive Mode. The 1-Wire bus requires a pullup resistor of approximately 5k ? .
The idle state for the 1-Wire bus is high. If for any reason a transaction needs to be suspended, the bus
MUST be left in the idle state if the transaction is to resume. If this does not occur and the bus is left low
for more than 16 ? s (Overdrive Speed) or more than 120 ? s (regular speed), one or more devices on the
bus may be reset.
TRANSACTION SEQUENCE
The protocol for accessing the DS2433 via the 1-Wire port is as follows:
?
?
?
?
Initialization
ROM Function Command
Memory Function Command
Transaction/Data
11 of 23
发布紧急采购，3分钟左右您将得到回复。

采购需求

(若只采购一条型号，填写一行即可)

发布成功！您可以继续发布采购。也可以进入我的后台，查看报价

发布成功！您可以继续发布采购。也可以进入我的后台，查看报价

*型号 *数量 厂商 批号 封装
添加更多采购

我的联系方式

*
*
*
相关PDF资料
DS2433X-Z01 IC EEPROM 4KBIT 6FCHIP
DS24B33G+T&R IC EEPROM 4KBIT 2SFN
DS2502-E64+ IC OTP 1KBIT TO92-3
DS2502P-E48+T&R IC OTP 1KBIT 6TSOC
DS2502S+ IC OTP 1KBIT 8SOIC
DS2505+T&R IC OTP 16KBIT TO92-3
DS25LV02R+T&R IC OTP 1KBIT SOT23-5
DS2704G+T&R IC EEPROM 1.25KBIT 6TDFN
相关代理商/技术参数
DS2433X-S#TW 制造商:Maxim Integrated Products 功能描述:- Tape and Reel
DS2433X-S/T&R 制造商:Maxim Integrated Products 功能描述:IC EEPROM 4KBIT 6FLIPCHIP
DS2433X-S/T&R 功能描述:IC EEPROM 4KBIT 6FCHIP RoHS:否 类别:集成电路 (IC) >> 存储器 系列:- 标准包装:150 系列:- 格式 - 存储器:EEPROMs - 串行 存储器类型:EEPROM 存储容量:4K (2 x 256 x 8) 速度:400kHz 接口:I²C，2 线串口 电源电压:2.5 V ~ 5.5 V 工作温度:-40°C ~ 85°C 封装/外壳:8-VFDFN 裸露焊盘 供应商设备封装:8-DFN（2x3） 包装:管件 产品目录页面:1445 (CN2011-ZH PDF)
DS2433X-S-C01#T 功能描述:电可擦除可编程只读存储器 RoHS:否 制造商:Atmel 存储容量:2 Kbit 组织:256 B x 8 数据保留:100 yr 最大时钟频率:1000 KHz 最大工作电流:6 uA 工作电源电压:1.7 V to 5.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-8
DS2433X-Z01 功能描述:IC EEPROM 4KBIT 6FCHIP RoHS:否 类别:集成电路 (IC) >> 存储器 系列:- 标准包装:150 系列:- 格式 - 存储器:EEPROMs - 串行 存储器类型:EEPROM 存储容量:4K (2 x 256 x 8) 速度:400kHz 接口:I²C，2 线串口 电源电压:2.5 V ~ 5.5 V 工作温度:-40°C ~ 85°C 封装/外壳:8-VFDFN 裸露焊盘 供应商设备封装:8-DFN（2x3） 包装:管件 产品目录页面:1445 (CN2011-ZH PDF)
DS2433Y 制造商:DALLAS 制造商全称:Dallas Semiconductor 功能描述:4k-Bit 1-Wire EEPROM
DS2433Y-Z01 制造商:DALLAS 制造商全称:Dallas Semiconductor 功能描述:4K-Bit 1-Wire EEPROM
DS2433Y-Z01/T&R 制造商:Maxim Integrated Products 功能描述:IC EEPROM 4KBIT 8SOIC