DS2411P+ Maxim Integrated Products, DS2411P+ Datasheet
![IC SILICON SERIAL NUMBER 6-TSOC](/photos/6/58/65840/406-6-tsoc_sml.jpg)
DS2411P+
Specifications of DS2411P+
Related parts for DS2411P+
DS2411P+ Summary of contents
Page 1
... Maxim Integrated Products, Inc. Silicon Serial Number with V PIN CONFIGURATION SOT23-3, Top View 1 2 ORDERING INFORMATION PART DS2411R/ T&R DS2411R +T&R DS2411P DS2411P/ T&R DS2411P+ DS2411P+ FLIP T&R CHIP A1 DS2411X Indicates lead(Pb)-free/RoHS-compliant package DS2411 ...
Page 2
ABSOLUTE MAXIMUM RATINGS* I/O Voltage to GND V Voltage to GND CC I/O, V Current CC Operating Temperature Range Junction Temperature Storage Temperature Range Soldering Temperature This is a stress rating only and functional operation of the device at ...
Page 3
PARAMETER I/O PIN, 1-Wire RESET, PRESENCE DETECT CYCLE Reset Low Time Presence-Detect High Time Presence-Detect Low Time Presence-Detect Fall Time Presence-Detect Sample Time I/O PIN, 1-Wire WRITE Write-0 Low Time Write-1 Low Time I/O PIN, 1-Wire READ Read Low Time ...
Page 4
I Note 11 represents the time required for the pullup circuitry to pull the voltage on I/O up from Note ...
Page 5
Figure 2. 1-WIRE CRC GENERATOR 1st 2nd 3rd STAGE STAGE STAGE Figure 3. DS2411 EQUIVALENT CIRCUIT Rx Tx 100 Ω MOSFET Figure 4. BUS MASTER CIRCUIT a) Open Drain BUS MASTER DS5000 ...
Page 6
TRANSACTION SEQUENCE The communication sequence for accessing the DS2411 through the 1-Wire bus is as follows: Initialization ROM Function Command Read Data INITIALIZATION All transactions on the 1-Wire bus begin with an initialization sequence. The initialization ...
Page 7
Figure 5. ROM FUNCTIONS FLOW CHART Bus Master Tx ROM Function Command 33h N Read ROM Command? Y DS2411 Tx Family Code (1 Byte) DS2411 Tx Serial Number (6 Bytes) DS2411 Tx CRC Byte Bus Master Tx Reset Pulse OD ...
Page 8
SIGNALING The DS2411 requires strict protocols 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. Except for the ...
Page 9
INITIALIZATION PROCEDURE Figure 6. Reset and Presence Pulse M ASTER Tx R ESET PU LSE V PUP ASTER ILM RESISTO R READ/WRITE TIMING DIAGRAM Figure 7a. Write-One ...
Page 10
Slave to Master A read-data time slot begins like a write-one time slot. The voltage on the data line must remain below V until the read low time t TLMIN DS2411 will start pulling the data line low; its internal ...
Page 11
NOISE SUPPRESSION SCHEME Figure 8 V PUP Case A 0V CRC GENERATION To validate the registration number transmitted from the DS2411, the bus master can generate a CRC value from the 8-bit family code and unique ...