DS1825 Maxim Integrated Products, DS1825 Datasheet - Page 15

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DS1825

Manufacturer Part Number
DS1825
Description
Programmable Resolution 1-Wire Digital Thermometer
Manufacturer
Maxim Integrated Products
Datasheet

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SUGGESTED PROCEDURE FOR BUILDING CROSS-REFERENCE TABLE
This procedure uses the Search ROM command to find all DS1825s on the one-wire bus (16 maximum) and then
reads each configuration register to match the ROMIDs to the hard-wired addresses.
Figure 13
Increment Counter
N = N + 1
ROMIDs on bus &
to Crossreference
Address and Add
Match ROMID to
Recall EEPROM
(F0h command)
store ROMIDs
(use AD3-AD0
Next ROMID
from Config
Search all
N>Nmax?
Master Tx
Register)
Table
N
Nmax is the number
of ROMIDs found
15 of 21
CROSSREFERENCE
ROMIDS AND 4-BIT
Y
TABLE USING
ADDRESSES
BUILDING
Note: Temperature sensors are addressed by
ROMID(12)
ROMID(13)
ROMID(14)
ROMID(15)
ROMID(0)
ROMID(1)
ROMID(2)
ROMID(3)
ROMID, not by binary address
ROMID
Crossreference Table
DONE
AD3-AD0
0000
0001
0010
0011
1100
1101
1110
1111

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