DS2480B Datasheet, PDF (23/32 Pages) Dallas Semiconductor – Serial 1-Wire Line Driver with Load Sensor

READ MEMORY SEQUENCE
Action Sequence
Generate Reset Pulse
Set Data Mode
Skip ROM Command
Read Memory Command
Starting Address TA1
Starting Address TA2
Read 8 Bytes of Data
Set Command Mode
Generate Reset Pulse
Host TX
C1
E1
CC
F0
40
00
FF (x8)
E3
C1
WRITE EPROM SEQUENCE (DS2505)
Write memory starting at address 40h
Action Sequence
Host TX
Set Vpp dur. = 512µs
29
Generate Reset Pulse
C1
Set Data Mode
E1
Skip ROM Command
CC
Write Memory Command
0F
Starting Address TA1
40
Starting Address TA2
00
*** Send Data Byte
(data)
Receive CRC16
FF (x2)
Set Command Mode
E3
Generate Program Pulse
FD
Set Data Mode
E1
Read Written Byte
FF
Go to *** to write the next byte or end the sequence as shown below
Set Command Mode
E3
Generate Reset Pulse
C1
TEMPERATURE CONVERSION SEQUENCE
Action Sequence
Host TX
Set pullup dur. = 524ms
39
Generate Reset Pulse
C1
Set Data Mode
E1
Skip ROM Command
CC
Set Command Mode
E3
Arm Strong Pullup
EF
Terminate Pulse
F1
Set Data Mode
E1
Convert Temperature
44
Wait for Pulse Response
(nothing)
Set Command Mode
E3
Disarm Strong Pullup
ED
Terminate Pulse
F1
Generate Reset Pulse
C1
23 of 32
DS2480B
Host RX
CD or ED
(nothing)
CC
(as sent)
(as sent)
(as sent)
(data)
(nothing)
CD or ED
Host RX
28
CD or ED
(nothing)
(as sent)
(as sent)
(as sent)
(as sent)
(as sent)
CRC16
(nothing)
response
(nothing)
(data)
(nothing)
CD or ED
Host RX
38
CD or ED
(nothing)
(as sent)
(nothing)
(nothing)
response
(nothing)
(as sent)
response
(nothing)
(nothing)
response
CD or ED