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DS2413P+TR Datasheet(PDF) 4 Page - Maxim Integrated Products

Part # DS2413P+TR
Description  1-Wire Dual Channel Addressable Switch
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Manufacturer  MAXIM [Maxim Integrated Products]
Direct Link  https://www.maximintegrated.com/en.html
Logo MAXIM - Maxim Integrated Products

DS2413P+TR Datasheet(HTML) 4 Page - Maxim Integrated Products

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DS2413: 1-Wire Dual Channel Addressable Switch
4 of 18
LEGACY VALUES
DS2413 VALUES
PARAMETER
STANDARD SPEED
OVERDRIVE SPEED
STANDARD SPEED
OVERDRIVE SPEED
MIN
MAX
MIN
MAX
MIN
MAX
MIN
MAX
tSLOT (incl. tREC)
61µs
(undef.)
7µs
(undef.)
67µs
(undef.)
10µs
(undef.)
tRSTL
480µs
(undef.)
48µs
80µs
600µs
960µs
63µs
80µs
tPDH
15µs
60µs
2µs
6µs
15µs
68µs
2µs
8.2µs
tPDL
60µs
240µs
8µs
24µs
60µs
260µs
8µs
32µs
tW0L
60µs
120µs
6µs
16µs
62µs
120µs
8µs
16µs
PIN DESCRIPTION
NAME
TSOC PIN #
TDFN PIN #
FUNCTION
IO
2
2
1-Wire bus interface. Open-drain, requires external pullup resistor.
PIOA
6
4
Programmable I/O pin, open-drain with weak pulldown, power-on
default is off (PIOA = 1).
PIOB
4
6
Programmable I/O pin, open-drain with weak pulldown, power-on
default is off (PIOB = 1).
GND1
1
3
Ground reference 1
GND2
5
5
Ground reference 2; both GND pins must be connected in the
application.
NC
3
1
Not connected
GND
N/A
EP
Exposed Paddle. Solder evenly to the board’s ground plane for proper
operation. See Application Note 3273 for additional information.
DESCRIPTION
The DS2413 combines two PIO pins and a fully featured 1-Wire interface in a single chip. PIO outputs are open-
drain, operate at up to 28V and provide an on resistance of 20
Ω max. A robust communication protocol ensures
that PIO output changes occur error-free. Each DS2413 has a Registration Number that is 64 bits long. The
Registration Number guarantees unique identification and is used to address the device in a multidrop 1-Wire
network environment, where multiple devices reside on a common 1-Wire bus and operate independently of each
other. Device power is supplied parasitically from the 1-Wire bus. The DS2413’s applications of include accessory
identification and control, system monitoring, and general-purpose input/output.
OVERVIEW
The block diagram in Figure 1 shows the relationships between the major sections of the DS2413. The DS2413
has two main components: 64-bit Registration Number, and PIO Control. The hierarchical structure of the 1-Wire
protocol is shown in Figure 2. The bus master must first provide one of the seven ROM Function Commands, 1)
Read ROM, 2) Match ROM, 3) Search ROM, 4) Skip ROM, 5) Resume, 6) Overdrive-Skip ROM or 7) Overdrive-
Match ROM. Upon completion of an Overdrive ROM command byte executed at standard speed, the device enters
Overdrive mode where all subsequent communication occurs at a higher speed. The protocol required for these
ROM function commands is described in Figure 10. After a ROM function command is successfully executed, the
PIO functions become accessible and the master may provide one of the two PIO Function commands. The
protocol for these commands is described in Figure 6. All data is read and written least significant bit first.
Figure 1. Block Diagram
1-Wire
Interface
PIO
Control
64-Bit Registration
Number
PIOA
IO
Internal VDD
PIOB


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