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DS2401_11 Datasheet

Download or read online Maxim Integrated DS2401_11 Silicon Serial Number Unique, Factory-Lasered and Tested 64-Bit pdf datasheet.



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FEATURES
 Upgrade and Drop-In Replacement for
DS2400
Extended 2.8V to 6.0V Range
Multiple DS2401 Devices Can Reside on a
Common 1-Wire
Net
 Unique, Factory-Lasered and Tested 64-Bit
Registration Number (8-Bit Family Code +
48-Bit Serial Number + 8-Bit CRC Tester);
Guaranteed No Two Parts Alike
 Built-In Multidrop Controller Ensures
Compatibility with Other 1-Wire Net
Products
 8-Bit Family Code Specifies DS2401
Communications Requirements to Reader
 Presence Pulse Acknowledges When the
Reader First Applies Voltage
 Low-Cost TO-92, SOT-223, and TSOC
Surface-Mount Packages
 Reduces Control, Address, Data, and Power
to a Single Pin
 Zero Standby Power Required
 Directly Connects to a Single Port Pin of a
Microprocessor and Communicates at Up to
16.3kbps
Functional Diagrams
 TO-92 Tape-and-Reel Version with Leads
Bent to 100-mil Spacing (Default) or with
Straight Leads (DS2401-SL)
 -40°C to +85°C Industrial Temperature
Range
APPLICATIONS
PCB Identification
Network Node ID
Equipment Registration
Pin Configurations appear at end of data sheet.
1- Wire is a registered trademark of Maxim Integrated Products, Inc.
Functional Diagrams continued at end of data sheet.
UCSP is a trademark of Maxim Integrated Products, Inc.
For pricing, delivery, and ordering information, please contact Maxim Direct
at 1-888-629-4642, or visit Maxim’s website at www.maximintegrated.com.
Silicon Serial Number
PIN CONFIGURATIONS
TO-92
DS2401
TOP VIEW
1
2
3
1
2 3
BOTTOM VIEW
Flip Chip, Top View
with Laser Mark,
01rrd
Contacts Not Visible.
“rrd” = Revision/Date
1
2
PIN DESCRIPTIONS
TO-92,
PIN
TSOC
SOT-223
1
Ground
Ground
2
Data (DQ)
Data (DQ)
3
No Connect
No Connect
4
Ground*
No Connect
5, 6
No Connect
*SOT-223 only.
19-5860; Rev 5/11
DS2401
TSOC
TOP VIEW
FLIP
CHIP
Data (DQ)
Ground

Summary of Contents

Page 1

... Network Node ID Equipment Registration Pin Configurations appear at end of data sheet. 1- Wire is a registered trademark of Maxim Integrated Products, Inc. Functional Diagrams continued at end of data sheet. UCSP is a trademark of Maxim Integrated Products, Inc. For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim’ ...

Page 2

ORDERING INFORMATION PART DS2401 DS2401T&R DS2401-SLT&R DS2401P DS2401PT&R DS2401Z DS2401ZT&R DS2401X1-S#T Denotes a lead(Pb)-free/RoHS-compliant package. T&R/T Tape and reel Straight leads. #Denotes a RoHS-compliant device that may include lead that is exempt under the RoHS requirements. DESCRIPTION ...

Page 3

The idle state for the 1-Wire bus is high. If, for any reason, a transaction needs to be suspended, the bus MUST be left in the idle state if the transaction is to resume. If this does not occur and ...

Page 4

... After one complete pass, the bus master knows the contents of the ROM in one device. The remaining number of devices and their ROM codes may be identified by additional passes. Refer to Application Note 187: 1-Wire Search Algorithm for a comprehensive discussion of a ROM search, including an actual example. iButton is a registered trademark of Maxim Integrated Products, Inc. ...

Page 5

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 ...

Page 6

ROM FUNCTIONS FLOW CHART Figure 4 ...

Page 7

INITIALIZATION PROCEDURE RESET AND PRESENCE PULSES Figure 5 RESISTOR MASTER DS2401 In order not to mask interrupt signaling by other devices on the 1-Wire bus less than 960µs. READ/WRITE TIMING DIAGRAM Figure 6 Write-One Time Slot RESISTOR ...

Page 8

READ/WRITE TIMING DIAGRAM (contd) Figure 6 Write-zero Time Slot Read-data Time Slot RESISTOR MASTER DS2401 CRC GENERATION To validate the data transmitted from the DS2401, the bus master may generate value from the data ...

Page 9

ABSOLUTE MAXIMUM RATINGS Voltage Range on Any Pin Relative to Ground Operating Temperature Range Storage Temperature Range Lead Temperature (TO-92, TSOC, SOT-223 only; soldering, 10s) Soldering Temperature (reflow) TO-92 TSOC, SOT-223 Flip Chip This is a stress rating only and ...

Page 10

NOTES: 1) All voltages are referenced to ground external pullup voltage. PUP 3) Input load is to ground additional reset or communication sequence cannot begin until the reset high time has expired. 5) Read data ...

Page 11

... Maxim Integrated 160 Rio Robles, San Jose, CA 95134 USA 1-408-601-1000 © 2011 Maxim Integrated DESCRIPTION range; added a similar PUP from the EC table header PUP The Maxim logo and Maxim Integrated are trademarks of Maxim Integrated Products, Inc. PAGES CHANGED ...

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