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PDF DS2401 Data sheet ( Hoja de datos )

Número de pieza DS2401
Descripción Silicon Serial Number
Fabricantes Maxim Integrated 
Logotipo Maxim Integrated Logotipo




1. DS2401 datasheet






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No Preview Available ! DS2401 Hoja de datos, Descripción, Manual

19-5860; Rev 3/15
DS2401
Silicon Serial Number
BENEFITS AND FEATURES
Guaranteed Unique 64-Bit ROM ID Chip for
Absolute Traceability
o Unique, Factory-Lasered and Tested
64-Bit Registration Number (8-Bit Family
Code +48-Bit Serial Number + 8-Bit CRC
Tester)
o 8-Bit Family Code Specifies DS2401
Communications Requirements to Reader
Minimalist 1-Wire® Interface Lowers Cost
and Interface Complexity
o Multiple DS2401 Devices Can Reside on
a Common 1-Wire Net
o Built-In Multidrop Controller Ensures
Compatibility with Other 1-Wire Net
Products
o Reduces Control, Address, Data, and
Power to a Single Pin and Communicates
at Up to 16.3kbps
o Presence Pulse Acknowledges When the
Reader First Applies Voltage
o Low-Cost TO-92, SOT-223, and TSOC
Surface-Mount Packages
o TO-92 Tape-and-Reel Version with Leads
Bent to 100-mil Spacing (Default) or with
Straight Leads (DS2401-SL)
Wide Voltage and Temperature Operating
Ranges Enables Robust System Performance
o Extended 2.8V to 6.0V Range
o Zero Standby Power Required
o -40°C to +85°C Industrial Temperature
Range
APPLICATIONS
PCB Identification
Network Node ID
Equipment Registration
PIN CONFIGURATIONS
TO-92
TSOC
DS2401
TOP VIEW
123
123
TOP VIEW
BOTTOM VIEW
01rrd
12
Flip Chip, Top View
with Laser Mark,
Contacts Not Visible.
“rrd” = Revision/Date
PIN DESCRIPTIONS
PIN
TO-92,
SOT-223
TSOC
1 Ground Ground
2 Data (DQ) Data (DQ)
3 No Connect No Connect
4 Ground* No Connect
5, 6 —
*SOT-223 only.
No Connect
FLIP
CHIP
Data (DQ)
Ground
1-Wire is a registered trademark of Maxim Integrated Products, Inc.
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1 page




DS2401 pdf
DS2401
1-Wire SIGNALING
The DS2401 requires a strict protocol to ensure data integrity. The protocol consists of four types of
signaling on one line: reset sequence with Reset Pulse and Presence Pulse, write 0, write 1, and read data.
All these signals except Presence Pulse are initiated by the bus master.
The initialization sequence required to begin any communication with the DS2401 is shown in Figure 5.
A reset pulse followed by a Presence Pulse indicates the DS2401 is ready to send or receive data given
the correct ROM command.
The bus master transmits (TX ) a reset pulse (tRSTL , minimum 480µs). The bus master then releases the
line and goes into receive mode (RX ). The 1-Wire bus is pulled to a high state via the 5kpullup resistor.
After detecting the rising edge on the data pin, the DS2401 waits (tPDH, 15-60µs) and then transmits the
Presence Pulse (tPDL, 60-240µs). The 1-Wire bus requires a pullup resistor range of 1.5kto 5k,
depending on bus load characteristics.
READ/WRITE TIME SLOTS
The definitions of write and read time slots are illustrated in Figure 6. All time slots are initiated by the
master driving the data line low. The falling edge of the data line synchronizes the DS2401 to the master
by triggering a delay circuit in the DS2401. During write time slots, the delay circuit determines when the
DS2401 will sample the data line. For a read data time slot, if a “0” is to be transmitted, the delay circuit
determines how long the DS2401 will hold the data line low overriding the “1” generated by the master.
If the data bit is a 1, the DS2401 will leave the read data time slot unchanged.
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5 Page





DS2401 arduino
DS2401
REVISION HISTORY
REVISION
DATE
040601
022202
DESCRIPTION
Changed MicroLAN to 1-Wire Net; updated ordering information for
tape and reel
Changed soldering temperature from 260°C for 10 seconds to See J-STD-
020A Specification
Below Figure 3, added a note on the optimal RPUP range; added a similar
note before the Read/Write Time Slots section
Added notes 11 to 13 to the EC table
Added flip chip package; added lead-free ordering information
122106
References to the Book of iButton Standards replaced with references to
corresponding application notes
VILMAX changed from 0.8V to 0.3V, EC table note 11 deleted
Deleted standard (Pb) parts from ordering information; changed flip chip
part number from DS2401X1 to DS2401X1-S#T
5/11
Deleted VOH from the EC table; moved VPUP from the EC table header
into the EC table; changed soldering temperature from J-STD-020A
reference to explicit package specific numbers
Added Package Information and Revision History sections
3/15 Revised Benefits and Features section
PAGES
CHANGED
1
9
3, 6
9, 10
1, 2
Various
9, 10
2
9
10, 11
1
11 of 11
Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim
reserves the right to change the circuitry and specifications without notice at any time.
Maxim Integrated Products, 160 Rio Robles, San Jose, CA 94134 408-601-1000
© 2015 Maxim Integrated Products
Maxim is a registered trademark of Maxim Integrated Products, Inc.

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