AN2503 Freescale Semiconductor / Motorola, AN2503 Datasheet - Page 32

• Manufacturer Part Number: AN2503
• Description: Slave LIN Driver for the MC68HC908QT/QY Family
• Manufacturer: Freescale Semiconductor / Motorola

AN2503/D
LIN Driver Features and Performance Comparison
32
The Motorola LIN website contains application notes and drivers for different
implementations. So, you can find the design that best matches your
application. Some influential factors affecting your MCU decision could include:
The application described in this documents is intended to cover the
lowest-end part of the LIN portfolio, meaning:
Slave LIN Driver for the MC68HC908QT/QY Family
•
•
•
•
•
•
•
•
•
•
•
•
Freescale Semiconductor, Inc.
For More Information On This Product,
Master/Slave tasks or only slave tasks
Memory requirements
Number of available pins
Other physical interfaces (SPI, IIC, LCD, etc.)
Development time
Cost
Only slave tasks — This driver implements only slave tasks, meaning
that the node must be a slave, executing commands and sending data
only by master requests.
Low memory requirements — This driver is intended to be used in a
member of the MC68HC908QT/QY Family, whose members have 1.5K
and 4K FLASH. This driver uses approximately between 600 bytes to
1K, allowing the user to implement the driver in the smallest MCU from
Motorola with enough space for a small application.
Low number of available pins — This family has members with 8 pins
(6 I/O) or 16 pins (14 I/O), and the driver can use as few as 1 to 4 pins.
No physical interfaces — This family is a low-level general-purpose
family, so it doesn’t include any special distinctive feature, except the
ADC pins and the internal modules.
Decreases development time — There are several hardware options
for a LIN implementation including (from simplest to most complex): the
SLIC (slave LIN interface controller), ESCI (enhanced serial
communication interface), SCI (serial communication interface), and
bit-banged timer. However, this driver is intended to reduce the
development time because the user doesn’t have to worry about the
implementation, only to develop his or her own code.
Lowest cost — The most important feature about this driver is that it
allows a LIN implementation in the least expensive and smallest
Motorola MCU.
Go to: www.freescale.com
MOTOROLA