DS28E05R+T Maxim Integrated, DS28E05R+T Datasheet - Page 5

• Manufacturer Part Number: DS28E05R+T
• Description: EEPROM 1-Wire 112-BYTE EEPROM
• Manufacturer: Maxim Integrated

Specifications of DS28E05R+T

• Rohs: yes

Figure 1. Block Diagram
Figure 2. Hierarchical Structure for 1-Wire Protocol
Figure 3. 64-Bit ROM ID
DS28E05
The polynomial is X
about the 1-Wire Cyclic Redundancy Check is available
in
Redundancy Checks with Maxim iButton®
iButton is a registered trademark of Maxim Integrated
Products, Inc.
www.maximintegrated.com
Application Note 27: Understanding and Using Cyclic
MSb
MSb
CRC CODE
8-BIT
8
+ X
LSb MSb
5
MEMORY FUNCTION COMMANDS
+ X
FUNCTION COMMANDS
COMMAND LEVEL:
DS28E05-SPECIFIC
4
DS28E05
+ 1. Additional information
1-Wire ROM
1-Wire NET
Products.
1-Wire FUNCTION
(128 BITS EACH)
USER EEPROM
7 PAGES OF
FUNCTION
CONTROL
CONTROL
MEMORY
AVAILABLE COMMANDS:
READ ROM
MATCH ROM
SEARCH ROM
SKIP ROM
RESUME
WRITE MEMORY
READ MEMORY
48-BIT SERIAL NUMBER
PARASITE POWER
The shift register bits are initialized to 0. Then, starting
with the least significant bit 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 reg-
ister contains the CRC value. Shifting in the 8 bits of the
CRC returns the shift register to all 0s.
DS28E05
DATA FIELD AFFECTED:
64-BIT ROM ID, RC-FLAG
64-BIT ROM ID, RC-FLAG
64-BIT ROM ID, RC-FLAG
RC-FLAG
RC-FLAG
USER MEMORY, ADMINISTRATIVE DATA
USER MEMORY, ADMINISTRATIVE DATA
ADMINISTRATIVE DATA
ROM ID
(64 BITS)
64-BIT
LSb
MSb
8-BIT FAMILY CODE
1-Wire EEPROM
(0Dh)
Maxim Integrated │ 5
LSb
LSb