68300

Scott:
 
    The TSC and the TSTME signal do share the same pin, pin 57 on the 132 pin package and pin 80 on the 144 pin package.  If you want to have the '332 tristated you need to pull this pin to 1.6 * Vdd.  Pulling it low will place it into test mode.  Pulling it to 5 V is where this pin should usually be.  
 
Regards, 

John Honnold 
Motorola SPS 
Technical Information Center 
MCU 16/32 Bit Applications Engineer 
 

 -----Original Message-----
From: Scott Newell [mailto:newell@...]
Sent: Monday, November 18, 2002 8:24 AM
To: 68300@yahoogroups.com
Subject: [68300] Where's TSTME?



Been reading up on TPU stuff, and if I want to attempt to use some of the
more esoteric TPU development features (single step, breakpoints, etc.), it
appears that I need to put the '332 in test mode.  My '332 user's manual
doesn't show the TSTME pin, but somewhere I remember reading that TSC and
TSTME shared a pin.  Anyone know for sure?

Furthermore, the original (not rev 1) TPU ref manual mentions that there is
some documentation of the test submodule registers in the '332 user's
manual.  I suspect that later revs of the '332 book removed detail, so if
anyone has a link to an online copy of a really old '332 user manual,
please pass it on!


thanks,
newell



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