MMDS05 CONFIGURATION AND OPERATION
M68HC05E24/D2
2-2
MOTOROLA
2.1 SETTING E24EM JUMPER HEADERS
Your E24EM has five jumper headers, J1 to J5. This section explains how to configure these
headers.
2.1.1 Factory Test Header(J1)
Jumper header J1 is used for factory test purposes only. The fabricated jumper installed
between pins 2 and 3 is the only correct configuration for this header
.
1
2
3
FABRICATED
JUMPER
FABRICATED
JUMPER
J1
FABRICATED
JUMPER
User
Factory
Test
2.1.2 Reset Select Header (J2)
Jumper header J2 controls the path of a target reset. The diagram below shows the factory
configuration: the fabricated jumper between pins 1 and 2 enables your software to control
resets. This is the only correct J2 configuration for a E24EM that is part of an MMDS05.
1
2
3
J2
FABRICATED
JUMPER
FABRICATED
JUMPER
FABRICATED
JUMPER
EVS
Target
NOTE: Using the E24EM with the fabricated jumper installed between pins 2 and 3 will
interfere with correct operation of the RESETIN and RESETOUT commands. The J2 pins 2-
and-3 configuration is not correct for a E24EM that is part of an MMDS05 system.
Freescale Semiconductor, I
Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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