ATA6617-P3QW Atmel, ATA6617-P3QW Datasheet - Page 187

• Manufacturer Part Number: ATA6617-P3QW
• Description: MCU W/LIN TX/5V REG/WTCDG 38VQFN
• Manufacturer: Atmel
• Series: AVR® ATA66 LIN-SBCr

Specifications of ATA6617-P3QW

• Core Processor: AVR
• Core Size: 8-Bit
• Speed: 16MHz
• Connectivity: I²C, LIN, SPI, UART/USART, USI
• Peripherals: Brown-out Detect/Reset, POR, PWM, Temp Sensor, WDT
• Number Of I /o: 16
• Program Memory Size: 16KB (16K x 8)
• Program Memory Type: FLASH
• Eeprom Size: 512 x 8
• Ram Size: 512 x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Data Converters: A/D 11x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 125°C
• Package / Case: 38-VQFN
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

4.16.3
4.16.3.1
4.16.3.2
Figure 4-70. Structure of a LIN Frame
9132D–AUTO–12/10
LIN Protocol
BREAK
Master and Slave
Frames
Break Delimiter
Field
HEADER
A LIN cluster consists of one master task and several slave tasks. A master node contains the
master task as well as a slave task. All other nodes contain a slave task only.
Figure 4-68. LIN Cluster with One Master Node and “n” Slave Nodes
The master task decides when and which frame shall be transferred on the bus. The slave
tasks provide the data transported by each frame. Both the master task and the slave task are
parts of the Frame handler
A frame consists of a header (provided by the master task) and a response (provided by a
slave task).
The header consists of a BREAK and SYNC pattern followed by a PROTECTED IDENTIFIER.
The identifier uniquely defines the purpose of the frame. The slave task appointed for provid-
ing the response associated with the identifier transmits it. The response consists of a DATA
field and a CHECKSUM field.
Figure 4-69. Master and Slave Tasks Behavior in LIN Frame
The slave tasks waiting for the data associated with the identifier receives the response and
uses the data transported after verifying the checksum.
Slave Task 1
Slave Task 2
SYNC
Master Task
Field
PROTECTED
IDENTIFIER
master node
HEADER
master task
slave task
Response Space
Field
FRAME SLOT
DATA-0
RESPONSE
slave node
Field
slave task
LIN bus
1
Atmel ATA6616/ATA6617
RESPONSE
Each byte field is transmitted as a serial byte, LSB first.
DATA-n
HEADER
Inter-Byte Space
Field
slave node
slave task
n
CHECKSUM
RESPONSE
Field
Inter-Frame Space
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