AN2503 Freescale Semiconductor / Motorola, AN2503 Datasheet - Page 29

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

Schematic
Driver Usage and Example
Configure lincfg.h
MOTOROLA
V
Bat
GND
LIN
2.2 kΩ
10 kΩ
6
3
~12 V
LIN
WAKE
7
V
Sup
MC33399
GND
8
5
5
8
INH
This section shows how to implement the driver with reference to the example
project, AN2503SW. This file can be downloaded from the Motorola LIN
website, http://motorola.com/semiconductors/LIN
Write lincfg.h according to the implementation needs. Review
Description
is configured as described below:
LT1121
27 kΩ
(MONITOR
Slave LIN Driver for the MC68HC908QT/QY Family
3
•
•
•
•
•
•
•
•
Freescale Semiconductor, Inc.
EN
Rx
Tx
MODE)
For More Information On This Product,
J2
47 kΩ
2
1
4
Internal oscillator used
Medium 9600 bps LIN frequency (f
PTA0 used as bidirectional pin for communication
Transceiver is not used
Bit error and parity error are checked/enabled
QuickAction commands are not used
Smaller ROM table is defined
Trimmed value of 0x19 is used
OSCILLATOR MODULE
1
(DEBUG)
J4
5 V (DEBUG)
1 kΩ
for a complete description of this file. In the AN2503SW, the driver
Go to: www.freescale.com
J3
9.1 V
ZENER
J5
100 kΩ
13
16
15
6
8
5 V
B7
IRQ
A1
B2
OSC1
(Rx)
(Tx)
V
5
DD
MC68HC908QY4
47 kΩ
V
4
SS
RESET
12
LIN
) used
100 nF
B0
B3
B4
B5
B6
3
14
11
10
7
1 kΩ 1 kΩ 1 kΩ 1 kΩ
RESET
100 kΩ
lincfg.h
S1
PUSH-BUTTON
Schematic
AN2503/D
29