DS1922L Maxim, DS1922L Datasheet - Page 40

• Manufacturer Part Number: DS1922L
• Description: The DS1922L/T temperature logger iButtons® are rugged, self-sufficient systems that measure temperature and record the result in a protected memory section
• Manufacturer: Maxim

Temperature Logger iButton with 8KB
Data-Log Memory
Figure 11b. ROM Functions Flowchart (continued)
40
______________________________________________________________________________________
TO FIGURE 11a
FROM FIGURE 11a
FROM FIGURE 11a
TO FIGURE 11a
NOTE: THE OD FLAG REMAINS AT 1 IF THE DEVICE WAS ALREADY AT OVERDRIVE SPEED BEFORE THE OVERDRIVE-MATCH ROM COMMAND WAS ISSUED.
COMMAND?
SKIP ROM
RC = 0
CCh
Y
N
COMMAND?
RESUME
RC = 1?
A5h
Y
Y
MASTER Tx
RESET?
N
N
N
Y
RC = 0; OD = 1
OVERDRIVE-
SKIP ROM?
MASTER Tx
RESET?
3Ch
Y
N
Y
N
MASTER Tx BIT 63
MASTER Tx BIT 0
MASTER Tx BIT 1
BIT 63 MATCH?
RC = 0; OD = 1
MATCH ROM?
BIT 0 MATCH?
BIT 1 MATCH?
OVERDRIVE-
RC = 1
69h
Y
Y
Y
Y
N
N
N
N
(SEE NOTE)
(SEE NOTE)
(SEE NOTE)
OD = 0
OD = 0
OD = 0