DS2422 Maxim, DS2422 Datasheet - Page 48

• 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

STEP 3
Start the new mission.
With only a single DS2422 connected to the bus master, the communication of step 3 looks like this:
If step 3 was successful, the MIP bit in the General Status Register will be 1, the MEMCLR bit will be 0 and the
mission start delay will count down.
PACKAGE INFORMATION
For the latest package outline information and land patterns, go to www.maxim-ic.com/packages. Note that a "+",
"#", or "-" in the package code indicates RoHS status only. Package drawings may show a different suffix
character, but the drawing pertains to the package regardless of RoHS status.
PACKAGE TYPE
24 SO(W)
MASTER MODE
MASTER MODE
RX
RX
RX
RX
RX
RX
RX
RX
RX
TX
TX
TX
TX
TX
TX
TX
TX
TX
TX
TX
TX
TX
TX
TX
TX
TX
TX
PACKAGE CODE
W24+4
DATA (LSB FIRST)
DATA (LSB FIRST)
<32 data bytes>
<7 FFh bytes>
<8 FFh bytes>
<8 FFh bytes>
(Presence)
(Presence)
(Presence)
(Presence)
(Presence)
(Reset)
(Reset)
(Reset)
(Reset)
(Reset)
CCh
CCh
CCh
CCh
AAh
FFh
00h
02h
1Fh
99h
00h
02h
1Fh
DOCUMENT NO.
21-0042
48 of 49
Write through the end of the scratchpad
Reset pulse
Presence pulse
Issue “skip ROM” command
Issue “read scratchpad” command
Read TA1, beginning offset=00h
Read TA2, address=0200h
Read E/S, ending offset=1Fh, flags=0h
Read scratchpad data and verify
Reset pulse
Presence pulse
Issue “skip ROM” command
Issue “copy scratchpad” command
TA1
TA2
E/S
Send dummy password
Reset pulse
Presence pulse
Reset pulse
Presence pulse
Issue “skip ROM” command
Issue “start mission” command
Send dummy password
Send dummy byte
Reset pulse
Presence pulse
(AUTHORIZATION CODE)
COMMENTS
COMMENTS