Datasheet

DS1921G
Thermochron iButton
30 ______________________________________________________________________________________
MASTER Tx BIT 0
OD = 1
Y
N
Y
3Ch
OVERDRIVE-
SKIP ROM?
N
Y
CCh
SKIP ROM
COMMAND?
Y
69h
OVERDRIVE-
MATCH ROM?
N
N
N
N
MASTER Tx BIT 1
MASTER Tx BIT 63
Y
Y
Y
BIT 0 MATCH?
MASTER
Tx RESET
PULSE?
BIT 63 MATCH?
BIT 1 MATCH?
N
TO FIGURE 13a
FROM FIGURE 13a
FROM FIGURE 13a
TO FIGURE 13a
OD = 1
***ALWAYS TO BE TRANSMITTED AT OVERDRIVE SPEED.
***
***
***
Figure 13b. ROM Functions Flowchart