DS2413 View Datasheet(PDF) - Maxim Integrated
Part Name
Description
MFG CO.
'DS2413' PDF : 18 Pages View PDF
DS2413: 1-Wire Dual Channel Addressable Switch
PIO ACCESS READ EXAMPLE
Read the state of the PIOs 3 times.
With only a single DS2413 connected to the bus master, the communication looks like this:
MASTER MODE
TX
RX
TX
TX
RX
TX
RX
DATA (LSB FIRST)
(Reset)
(Presence)
CCh
F5h
<3 data bytes>
(Reset)
(Presence)
COMMENTS
Reset pulse
Presence pulse
Issue “Skip ROM” command
Issue “PIO Access Read” command
Read 3 PIO samples
Reset pulse
Presence pulse
PIO ACCESS WRITE EXAMPLE
Set both PIOs to 0 and then set PIOA to 1. Both PIOs are pulled high to VCC or VPUP by a resistor.
With only a single DS2413 connected to the bus master, the communication looks like this:
MASTER MODE
TX
RX
TX
TX
TX
TX
RX
RX
TX
TX
RX
RX
TX
RX
DATA (LSB FIRST)
(Reset)
(Presence)
CCh
5Ah
FCh
03h
AAh
F0h
FDh
02h
AAh
C3h
(Reset)
(Presence)
COMMENTS
Reset pulse
Presence pulse
Issue “Skip ROM” command
Issue “PIO Access Write” command
Write new PIO output state
Write inverted new PIO output state
Read confirmation byte
Read new PIO pin status
Write new PIO output state
Write inverted new PIO output state
Read confirmation byte
Read new PIO pin status
Reset pulse
Presence pulse
Note: Usually, the PIO pin state and PIO Output Latch State are the same. To read from a PIO, the PIO Output
Latch must be 1. If the PIO pin is then pulled low by a switch or external circuitry, the output latch state and pin
state are different.
PACKAGE INFORMATION
For the latest package outline information, go to www.maxim-ic.com/Packages.
PACKAGE TYPE
6 TSOC
6 TDFN
DOCUMENT NO.
56-G2016-001
21-0137
PACKAGE CODE
—
T633+2
17 of 18
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