Datasheet

DS2411
5 of 12
Figure 2. 1-WIRE CRC GENERATOR
X
0
X
1
X
2
X
3
X
4
X
5
X
6
X
7
X
8
POLYNOMIAL
=
X
8
+ X
5
+ X
4
+ 1
1st
STAGE
2nd
STAGE
3rd
STAGE
4th
STAGE
6th
STAGE
5th
STAGE
7th
STAGE
8th
STAGE
INPUT DATA
Figure 3. DS2411 EQUIVALENT CIRCUIT
100Ω
MOSFET
Rx
Tx
V
CC
I/O
-1µA ≤ I
L
≤ 1µA
GROUND
Figure 4. BUS MASTER CIRCUIT
OPEN-DRAIN
PORT PIN
BUS MASTER
DS5000 OR 8051
EQUIVALENT
V
CC
to DS2411
Rx
Tx
R
PUP
I/O to DS2411
Ground to DS2411
R
PUP
must be between 0.3 kΩ and 2.2 kΩ. The optimal
value depends on the 1-Wire communication speed and
the bus load characteristics.