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参数资料
| 型号： | DS2433G+T&R |
| 厂商： | Maxim Integrated |
| 文件页数： | 2/23页 |
| 文件大小： | 0K |
| 描述： | IC EEPROM 4KBIT 2SFN |
| 产品培训模块： | Lead (SnPb) Finish for COTS |
| 标准包装： | 2,500 |
| 格式 - 存储器： | EEPROMs - 串行 |
| 存储器类型： | EEPROM |
| 存储容量： | 4K (256 x 16) |
| 接口： | 1 线 串行 |
| 工作温度： | -40°C ~ 85°C |
| 封装/外壳： | 2-SFN |
| 供应商设备封装： | 2-SFN（6x6） |
| 包装： | 带卷 (TR) |
DS2433
DESCRIPTION
The DS2433 4Kb 1-Wire ? EEPROM identifies and stores relevant information about the product to
which it is associated. This lot or product specific information can be accessed with minimal interface, for
example a single port pin of a microcontroller. The DS2433 consists of a factory-lasered registration
number that includes a unique 48-bit serial number, an 8-bit CRC, and an 8-bit Family Code (23h) plus
4096 bits of user-programmable EEPROM. The power to read and write the DS2433 is derived entirely
from the 1-Wire communication line. The memory is organized as sixteen pages of 256 bits each. The
scratchpad is an additional page that acts as a buffer when writing to memory. Data is first written to the
scratchpad where it may be read back for verification. A copy scratchpad command will then transfer the
data to memory. This process insures data integrity when modifying the memory. The 64-bit registration
number provides a guaranteed unique identity which allows for absolute traceability and acts as node
address if multiple DS2433s are connected in parallel to form a local network. Data is transferred serially
via the 1-Wire protocol which requires only a single data lead and a ground return. The PR-35 and SO
packages provide a compact enclosure that allows standard assembly equipment to handle the device
easily for attachment to printed circuit boards or wiring. Typical applications include storage of
calibration constants, board identification and product revision status.
OVERVIEW
The block diagram in Figure 1 shows the relationships between the major control and memory sections of
the DS2433. The DS2433 has three main data components: 1) 64-bit lasered ROM, 2) 256-bit scratchpad,
and 3) 4096-bit EEPROM. The hierarchical structure of the 1-Wire protocol is shown in Figure 2. The
bus master must first provide one of the six ROM Function Commands, 1) Read ROM, 2) Match ROM,
3) Search ROM, 4) Skip ROM, 5) Overdrive-Skip ROM or 6) Overdrive-Match ROM. Upon completion
of an overdrive ROM command byte executed at regular speed, the device will enter Overdrive mode
where all subsequent communication occurs at a higher speed. The protocol required for these ROM
function commands is described in Figure 9. After a ROM function command is successfully executed,
the memory functions become accessible and the master may provide any one of the four memory
function commands. The protocol for these memory function commands is described in Figure 7. All data
is read and written least significant bit first.
PARASITE POWER
The block diagram (Figure 1) shows the parasite-powered circuitry. This circuitry “steals” power
whenever the I/O input is high. I/O will provide sufficient power as long as the specified timing and
voltage requirements are met.
1-Wire is a registered trademark of Maxim Integrated Products, Inc.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| DS2433S | 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 |
| DS2433S/T&R | 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 |
| DS2433S/TR | 制造商:未知厂家 制造商全称:未知厂家 功能描述:EEPROM |
| DS2433S+ | 功能描述:电可擦除可编程只读存储器 4Kb 1-Wire 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 |
| DS2433S+T&R | 制造商:Maxim Integrated Products 功能描述:EEPROM 制造商:Maxim Integrated Products 功能描述:IC EEPROM 4KBIT 8SO |
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