DS1922E-F5 MAXIM [Maxim Integrated Products], DS1922E-F5 Datasheet - Page 26

• Manufacturer Part Number: DS1922E-F5
• Description: High-Temperature Logger iButton with 8KB Data-Log Memory
• Manufacturer: MAXIM [Maxim Integrated Products]

High-Temperature Logger iButton with 8KB
Data-Log Memory
Figure 9c. Memory/Control Function Flowchart (continued)
26
______________________________________________________________________________________
FROM FIGURE 9b
TO FIGURE 9b
N
Y
N
N
DS1922E INITIATES MISSION
START DELAY PROCESS
64 BITS [PASSWORD]
MASTER Tx RESET?
FFh DUMMY BYTE
START MISSION
DS1922E SETS
MEMCLR = 1?
MEMCLR = 0
PASSWORD
ACCEPTED?
PROGRESS?
MASTER Tx
MASTER Tx
MISSION IN
[WITH PW]
MIP = 1,
CCh
Y
Y
N
Y
Y
N
Y
MISSION TIMESTAMP REGISTER
DS1922E WAITS FOR 1 MINUTE
DS1922E COPIES RTC DATA TO
TEMPERATURE CONVERSION
DS1922E STARTS LOGGING
DS1922E PERFORMS 8-BIT
START DELAY COUNTER
DS1922E SETS WFTA = 1
DS1922E SETS WFTA = 0
DS1922E DECREMENTS
TAKING FIRST SAMPLE
DS1922E WAITS ONE
DS1922E WAITS ONE
END OF PROCESS
DELAY PROCESS
SAMPLE PERIOD
SAMPLE PERIOD
MISSION START
COUNTER = 0?
TEMPERATURE
START DELAY
SUTA = 1?
MIP = 0?
ALARM?
N
Y
N
Y
Y
N
N
64 BITS [PASSWORD]
MASTER Tx RESET?
FFh DUMMY BYTE
STOP MISSION
DS1922E SETS
ACCEPTED?
PROGRESS?
MASTER Tx
MASTER Tx
PASSWORD
MISSION IN
[WITH PW]
WFTA = 0
MIP = 0,
33h
Y
Y
Y
Y
N
N
N
N