DS2422 Maxim, DS2422 Datasheet - Page 28

• 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 12-1. Memory/Control Function Flow Chart
ments Scratch-
DS2422 Incre-
pad Offset
N
Y
Y
Command, Address Data
Master TX Memory or
Control Fkt. Command
DS2422 sets Scratch-
DS2422 sets (E4:E0)
Master TX Data Byte
pad Offset = (T4:T0)
to Scratchpad Offset
and Clears (PF, AA)
Master RX CRC16 of
= Scratchpad Offset
Master RX "1"s
TA2 (T15:T8)
pad Offset =
TA1 (T7:T0)
Scratchpad
TX Reset?
TX Reset?
TX Reset?
Master TX
Master TX
11111b?
Scratch-
Master
Master
Master
Write
0FH
N
Y
N
N
Y
Byte Written?
Y
N
Partial
N
Flow Chart (Figure 14)
From ROM Functions
PF = 1
28 of 49
Y
ments Scratch-
DS2422 Incre-
pad Offset
Flow Chart (Figure 14)
N
Y
To ROM Functions
E/S Byte, and Data Starting
Command, Address Data,
from Scratchpad Offset
DS2422 sets Scratch-
Master RX Data Byte
at the Target Address
pad Offset = (T4:T0)
Master RX CRC16 of
Master RX Ending
Offset with Data
Master RX "1"s
TA2 (T15:T8)
pad Offset =
TA1 (T7:T0)
Status (E/S)
Scratchpad
TX Reset?
TX Reset?
Master RX
Master RX
11111b?
Scratch-
Master
Master
Read
AAH
N
Y
N
Y
N
Y
From Figure 12
To Figure 12
2
2
nd
nd
Part
Part