DS2450 Dallas Semiconducotr, DS2450 Datasheet - Page 16

• Manufacturer Part Number: DS2450
• Description: 1-Wire Quad A/D Converter
• Manufacturer: Dallas Semiconducotr

USAGE EXAMPLE (set-up section)
There is a single V
alarm thresholds of 2.0V (64h) and 3.0V (96h) (increment 20 mV) and convert the input voltage; turn on
the channel A output if low alarm occurs and the channel B output if high alarm occurs, respectively.
Continued on the next page.
*In a multi-drop environment it takes less time to set-up an unused channel rather than skipping it.
MASTER MODE
TX
RX
TX
TX
TX
TX
TX
RX
RX
TX
RX
RX
TX
RX
RX
TX
RX
RX
TX
RX
RX
TX
RX
RX
TX
RX
RX
TX
RX
RX
CC
powered DS2450 on the 1-Wire bus. Set-up channel D for 12 bits, 5.12V range and
DATA (LSB FIRST)
<CRC16>
<CRC16>
<CRC16>
<CRC16>
<CRC16>
<CRC16>
<CRC16>
<CRC16>
Presence
Reset
CCh
0Dh
0Dh
C0h
C0h
C0h
C0h
C0h
C0h
0Ch
0Ch
55h
08h
00h
00h
00h
00h
00h
00h
00h
16 of 24
COMMENTS
Reset Pulse (480 - 960 s)
Presence Pulse
Issue “Skip ROM” Command
Issue “Write Memory” Command
TA1, beginning address
TA2, address = 0008h
data byte (address 0008)
CRC of command, address, data byte
read-back for simple verification
next data byte (address 0009h)
CRC of address, data byte
read-back for simple verification
data byte (address 000A)
CRC of address, data byte
read-back for simple verification
next data byte (address 000Bh)
CRC of address, data byte
read-back for simple verification
data byte (address 000C)
CRC of address, data byte
read-back for simple verification
next data byte (address 000Dh)
CRC of address, data byte
read-back for simple verification
data byte (address 000E)
CRC of address, data byte
read-back for simple verification
next data byte (address 000Fh)
CRC of address, data byte
read-back for simple verification
CH-A
CH-B
CH-C*
CH-D
102199
DS2450