DS2413P MAXIM [Maxim Integrated Products], DS2413P Datasheet - Page 17

• Manufacturer Part Number: DS2413P
• Description: 1-Wire Dual Channel Addressable Switch
• Manufacturer: MAXIM [Maxim Integrated Products]

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:
PIO ACCESS WRITE EXAMPLE
Set both PIOs to 0 and then set PIOA to 1. Both PIOs are pulled high to V
With only a single DS2413 connected to the bus master, the communication looks like this:
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
(The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information, go to
www.maxim-ic.com/DallasPackInfo.)
Maxim/Dallas Semiconductor cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim/Dallas Semiconductor
product. No circuit patent licenses are implied. Maxim/Dallas Semiconductor reserves the right to change the circuitry and specifications without notice at any
time.
MAXIM is a registered trademark of Maxim Integrated Products, Inc. DALLAS is a registered trademark of Dallas Semiconductor
Corporation
MASTER MODE
MASTER MODE
RX
RX
RX
RX
RX
RX
RX
RX
RX
TX
TX
TX
TX
TX
TX
TX
TX
TX
TX
TX
TX
Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600
DATA (LSB FIRST)
DATA (LSB FIRST)
© 2005 Maxim Integrated Products · Printed USA
<3 data bytes>
(Presence)
(Presence)
(Presence)
(Presence)
(Reset)
(Reset)
(Reset)
(Reset)
CCh
CCh
FCh
AAh
FDh
AAh
C3h
F5h
5Ah
F0h
03h
02h
17 of 17
Reset pulse
Presence pulse
Issue “Skip ROM” command
Issue “PIO Access Read” command
Read 3 PIO samples
Reset pulse
Presence pulse
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
CC
or V
PUP
COMMENTS
by a resistor.
COMMENTS