AN2633 Freescale Semiconductor / Motorola, AN2633 Datasheet - Page 6

• Manufacturer Part Number: AN2633
• Description: LIN Drivers for SLIC Module on the MC68HC908QL4
• Manufacturer: Freescale Semiconductor / Motorola

AN2633/D
Hardware — LIN Kit Demo Board
6
V
Bat
GND
LIN
2.2 kΩ
10 kΩ
NOTE:
6
3
~12 V
LIN
WAKE
7
V
Sup
MC33399
GND
8
5
5
8
INH
time spent inside the communications interrupt handlers. This time is valuable
because other interrupts cannot be handled during this time.
The LIN kit demo board is made from a QL4 with an added LIN interface, which
consists of an MC33399 LIN transceiver and a 5-V regulator (an LT1121 chip).
The board can be programmed using either the RS-232 MON08 interface or a
Cyclone
The board requires three jumpers (J2, J4, and J5) for programming it using the
RS-232 MON08 interface. The jumper J2 is however not needed when using a
MultiLink or Cyclone tool to program or debug.
If you plan to use MON08 tools for debugging, you must avoid manipulating pin
PTA0 since that will disturb the communication with the tool.
LT1121
27 kΩ
LIN Drivers for SLIC Module on the MC68HC908QL4
(MONITOR
3
Freescale Semiconductor, Inc.
EN
Rx
Tx
Figure 3. Schematic of QL4 LIN Kit Board
MODE)
For More Information On This Product,
J2
47 kΩ
2
1
4
OSCILLATOR MODULE
®
1
or MultiLink
(DEBUG)
J4
5 V (DEBUG)
1 kΩ
Go to: www.freescale.com
9.1 V
ZENER
J5
®
100 kΩ
13
7
16
15
tool.
2
5 V
B7
IRQ
B4
B5
OSC1
(SLC Rx)
(SLC Tx)
V
5
DD
MC68HC908QL4
47 kΩ
V
4
SS
RESET
8
100 nF
A1
B0
B1
B2
B6
6
9
12
11
14
1 kΩ 1 kΩ 1 kΩ 1 kΩ
RESET
100 kΩ
S1
PUSH-BUTTON
MOTOROLA