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DS24B33
1-Wire 4Kb EEPROM
The shift register bits are initialized to 0. Then, starting
with the LSB of the family code, one bit at a time is
shifted in. After the 8th bit of the family code has been
entered, the serial number is entered. After the last bit
of the serial number has been entered, the shift register
contains the CRC value. Shifting in the 8 bits of the
CRC returns the shift register to all 0s.
Memory
The DS24B33 EEPROM array (Figure 5) consists of 16
pages of 32 bytes each, starting at address 0000h and
ending at address 01FFh. In addition to the EEPROM,
the device has a 32-byte volatile scratchpad. Writes to
the EEPROM array are a two-step process. First, data
is written to the scratchpad and then copied into the
main array. The user can verify the data in the scratch-
pad prior to copying.
POLYNOMIAL = X 8 + X 5 + X 4 + 1
1ST
STAGE
2ND
STAGE
3RD
STAGE
4TH
STAGE
5TH
STAGE
6TH
STAGE
7TH
STAGE
8TH
STAGE
X 0
X 1
X 2
X 3
X 4
X 5
X 6
X 7
X 8
INPUT DATA
Figure 4. 1-Wire CRC Generator
32-BYTE INTERMEDIATE STORAGE SCRATCHPAD
ADDRESS
0000h to 001Fh
0020h to 003Fh
0040h to 01DFh
01E0h to 01FFh
Figure 5. Memory Map
Maxim Integrated
32-BYTE FINAL STORAGE EEPROM
32-BYTE FINAL STORAGE EEPROM
FINAL STORAGE EEPROM
32-BYTE FINAL STORAGE EPPROM
PAGE 0
PAGE 1
PAGES 2 to 14
PAGE 15
7
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相关代理商/技术参数
DS24B33G+U 功能描述:电可擦除可编程只读存储器 1-WIRE 4KB 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
DS24B33Q+T&R 制造商:Maxim Integrated Products 功能描述:1-WIRE 4KB EEPROM - Tape and Reel 制造商:Maxim Integrated Products 功能描述:IC EEPROM 4KBIT 6TDFN 制造商:Maxim Integrated Products 功能描述:EEPROM 1-Wire 4kbit EEPROM
DS24B33Q+T&R 功能描述:电可擦除可编程只读存储器 1-Wire 4kbit 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
DS24B33Q+U 功能描述:电可擦除可编程只读存储器 1-WIRE 4KB 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
DS24B33S 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:1-Wire 4Kb EEPROM
DS24B33S R 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:1-Wire 4Kb EEPROM
DS24B33S T 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:1-Wire 4Kb EEPROM
DS24B33S TR 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:1-Wire 4Kb EEPROM