DS1977-F5 データシートの表示（PDF） - Dallas Semiconductor -> Maxim Integrated
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DS1977-F5 Datasheet PDF : 16 Pages
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Figure 5-3. Memory Function Flow Chart, Part 3
Decision made
by DS1977
Decision made
by Master
69h
N
Read Mem.
[w/PW]
Y
Master TX
TA1 (T7:T0), TA2 (T15:T8)
Master TX
64-Bits [Password]
DS1977 sets Memory
Address = (T15:T0)
Master Activates
Strong Pull-up
Password
N
Accepted?
Y
Master RX Data Byte
from Memory Address or
FFh if Password Address
N
Power
Y
Fail?
Y
Master
TX Reset?
N
End of Page?
DS1977 Incre-
ments Address
Counter
N
Y
Master RX CRC16 of
Command, Address, Data
(1st Pass); CRC16 of Data
(Subsequent Passes)
Master Activates
Strong Pull-up
Master TX N
Reset
CRC OK?
Y
End of
N
Memory?
DS1977 Incre-
ments Address
Counter
Y
Master
TX Reset?
Y
N Master RX "1"s
Page 10
1/31/03
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