DS2401 Maxim Integrated Products, DS2401 Datasheet - Page 8

• Manufacturer Part Number: DS2401
• Description: IC SILICON SERIAL NUMBER TO-92
• Manufacturer: Maxim Integrated Products

Specifications of DS2401

• Applications: *
• Mounting Type: Through Hole
• Package / Case: TO-92-3 (Standard Body), TO-226
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

READ/WRITE TIMING DIAGRAM (cont’d) Figure 6
Write-zero Time Slot
Read-data Time Slot
CRC GENERATION
To validate the data transmitted from the DS2401, the bus master may generate a CRC value from the
data as it is received. This generated value is compared to the value stored in the last 8 bits of the
DS2401. If the two CRC values match, the transmission is error-free.
The equivalent polynomial function of this CRC is: CRC = x
the Dallas 1-Wire CRC is available in Application Note 27 .
CUSTOM DS2401
Customization of a portion of the unique 48-bit serial number by the customer is available. Dallas
Semiconductor will register and assign a specific customer ID in the 12 most significant bits of the 48-bit
field. The next most significant bits are selectable by the customer as a starting value, and the least
significant bits are non-selectable and will be automatically incremented by one. Certain quantities and
conditions apply for these custom parts. Contact your Dallas Semiconductor sales representative for more
information.
RESISTOR
MASTER
DS2401
60 μ s ≤ t
1 μ s ≤ t
60 μ s ≤ t
1 μ s ≤ t
0 ≤ t
1 μ s ≤ t
t
t
RDV
SU
< 1 μ s
RELEASE
= 15 μ s
8 of 10
REC
LOWR
REC
LOW0
SLOT
< ∞
< ∞
< 15 μ s
< 45 μ s
< 120 μ s
< t
SLOT
8
+ x
< 120 μ s
5
+ x
4
+ 1. Additional information about