Texas Instruments Development Kit for TM4C129x,Tiva™ ARM® Cortex™ -M4 Microcontroller DK-TM4C129X DK-TM4C129X Ficha De Dados
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Códigos do produto
DK-TM4C129X
22
1-Wire Master Module
The 1-Wire Master module is a bi-directional serial communication interface that implements the
protocol functions of the Dallas Semiconductor 1-Wire protocol and provides both power and data
over a single wire. The 1-Wire Master module can interface with a multiple variety of slaves such
as thermometers, mixed-signal devices, memory, and authentication devices.
protocol functions of the Dallas Semiconductor 1-Wire protocol and provides both power and data
over a single wire. The 1-Wire Master module can interface with a multiple variety of slaves such
as thermometers, mixed-signal devices, memory, and authentication devices.
The TM4C129XNCZAD microcontroller includes a 1-Wire Master module with the following features:
■ Support for standard and overdrive speeds, including a late-sample mechanism
■ Allows transfers of send, receive and bi-directional bits
■ Data size transfers of 1, 2, 3, or 4 bytes with sub-byte search and enumeration support
■ Interrupt capability for transaction pacing and line error
■ Optional two-wire support for isolated lines and high voltage use
■ Efficient transfers using Micro Direct Memory Access Controller (µDMA)
22.1
Block Diagram
Figure 22-1 on page 1505 details the components of the 1-wire Master Module. The clock source for
the 1-Wire Master module is the 16-MHz precision internal oscillator (PIOSC).
the 1-Wire Master module is the 16-MHz precision internal oscillator (PIOSC).
Figure 22-1. 1-Wire Block Diagram
ONEWIRECS
ONEWIRETIM
ONEWIREDATW
ONEWIREDATR
ONEWIREIM
ONEWIRERIS
ONEWIREMIS
ONEWIREICR
ONEWIREPP
Data/Control/Interrupt
1-Wire Bus Master
Control
16 MHz PIOSC
OWIRE
OWALT
OWDMA
dma_sreq
dma_done
TO µDMA
1505
December 13, 2013
Texas Instruments-Advance Information
Tiva
™
TM4C129XNCZAD Microcontroller