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Axiom Manufacturing 2813 Industrial Lane Garland, TX 75041
Email: Sales@axman.com Web: http://www.axman.com
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M68EVB908QL4
Development Board for Motorola MC68HC908QL4
M68EVB908QL4 12/04/03
2
CONTENTS
CAUTIONARY NOTES...........................................................................................................................................................3
TERMINOLOGY......................................................................................................................................................................3
FEATURES................................................................................................................................................................................4
GETTING STARTED...............................................................................................................................................................5
R
EFERENCE DOCUMENTATION .................................................................................................................................................5
M68EVB908QL4 S
TARTUP.....................................................................................................................................................6
M68EVB908QL4 OPERATION ..............................................................................................................................................6
MEMORY MAP......................................................................................................................................................................6
POWER SUPPLY ...................................................................................................................................................................7
PWR_SEL Option ................................................................................................................................................................7
+5V_EN Option...................................................................................................................................................................7
POWER Indicator................................................................................................................................................................7
PWR - Power Jack...............................................................................................................................................................7
U1
AND U2 SOCKETS ...............................................................................................................................................................7
USER_COMPONENTS..........................................................................................................................................................8
JP1 USER OPTIONS...........................................................................................................................................................8
RESET Switch......................................................................................................................................................................8
IRQ Switch...........................................................................................................................................................................8
RV1 User Potentiometer......................................................................................................................................................8
MON08 DEBUG PORT..........................................................................................................................................................9
MON_EN Option .................................................................................................................................................................9
CLK_EN Option...................................................................................................................................................................9
X1 CLOCK OSCILLATOR ..................................................................................................................................................9
LIN-J1 / J2 PORTS................................................................................................................................................................10
LIN_EN Option..................................................................................................................................................................10
WAKE Switch.....................................................................................................................................................................10
LIN Connectors and Options.............................................................................................................................................11
MC68HC980QL4 PORT CONNECTORS............................................................................................................................11
MCU_PORT..........................................................................................................................................................................11
CYCLONE PORT.................................................................................................................................................................12
TROUBLESHOOTING..........................................................................................................................................................12
M68EVB908QL4 SCHEMATIC............................................................................................................................................13
ERRATA ..................................................................................................................................................................................13
M68EVB908QL4 12/04/03
3
Cautionary Notes
1) Electrostatic Discharge (ESD) prevention measures should be applied whenever handling
this product. ESD damage is not a warranty repair item.
2) Axiom Manufacturing reserves the right to make changes without further notice to any
products to improve reliability, function or design. Axiom Manufacturing does not assume any
liability arising out of the application or use of any product or circuit described herein; neither
does it convey any license under patent rights or the rights of others.
3) EMC Information on the M68EVB908QL4 board:
a) This product as shipped from the factory with associated power supplies and cables, has
been tested and meets with requirements of CE and the FCC as a CLASS A product.
b) This product is designed and intended for use as a development platform for hardware
or software in an educational or professional laboratory.
c) In a domestic environment this product may cause radio interference in which case the
user may be required to take adequate prevention measures.
d) Attaching additional wiring to this product or modifying the products operation from the
factory default as shipped may effect its performance and also cause interference with
other apparatus in the immediate vicinity. If such interference is detected, suitable
mitigating measures should be taken.
Terminology
This development board applies option selection jumpers. Terminology for application of the
option jumpers is as follows:
Jumper on, in, or installed = jumper is a plastic shunt that fits across 2 pins and the
shunt is installed so that the 2 pins are connected with the shunt.
Jumper off, out, or idle = jumper or shunt is installed so that only 1 pin holds the shunt,
no 2 pins are connected, or jumper is removed. It is recommended that the jumpers be
idled by installing on 1 pin so they will not be lost.
This development board applies hard wired option selections (JP2). These option selections
apply a circuit trace between the option pads to complete a default connection. This type
connection places an equivalent Jumper Installed type option. The circuit trace between the
option pads maybe cut with a razor blade or similar type knife to isolate the default connection
provided. Applying the default connection again can be performed by installing the option post
pins and shunt jumper, or by applying a wire between the option pads.

M68EVB908QL4

Mfr. #:
Manufacturer:
NXP / Freescale
Description:
Development Boards & Kits - S08 / S12 MC68HC908QLX EVB
Lifecycle:
New from this manufacturer.
Delivery:
DHL FedEx Ups TNT EMS
Payment:
T/T Paypal Visa MoneyGram Western Union

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