DS2422 Maxim, DS2422 Datasheet - Page 32

• Manufacturer Part Number: DS2422
• Description: The DS2422 temperature/data logger combines the core functions of a fully featured data logger in a single chip
• Manufacturer: Maxim

Figure 12-5. Memory/Control Function Flow Chart
From Figure 12
To Figure 12
4
4
th
th
Part
Part
N
N
Y
N
Mission Start Delay
64-Bits [Password]
FFh dummy byte
DS2422 Initiates
Start Mission
MEMCLR = 0
DS2422 sets
Accepted?
TX Reset?
Progress?
Mission in
Master TX
Master TX
Password
MEMCLR
Process
MIP = 1
[w/PW]
Master
CCH
= 1?
Y
N
Y
Y
Y
N
Y
DS2422 Waits for 1 Minute
32 of 49
DS2422 Starts Logging
DS2422 Sets WFTA=1
DS2422 Performs 8-bit
DS2422 sets WFTA=0
Data to Mission Time
DS2422 decrements
DS2422 copies RTC
Start Delay Counter
Taking First Sample
DS2422 Waits One
DS2422 Waits One
Temp. Conversion
Stamp Register
Delay Process
Sample Period
Sample Period
End Of Process
Counter = 0?
Mission Start
Start Delay
SUTA = 1?
MIP = 0?
Alarm?
Temp.
N
Y
N
Y
N
N
Y
64-Bits [Password]
FFh dummy byte
DS2422 sets
Stop Mission
Accepted?
WFTA = 0
TX Reset?
Progress?
Master TX
Master TX
Password
Mission in
MIP = 0
[w/PW]
Master
33H
Y
Y
Y
Y
N
N
N
N