mc68hc912d60c Freescale Semiconductor, Inc, mc68hc912d60c Datasheet - Page 403
mc68hc912d60c
Manufacturer Part Number
mc68hc912d60c
Description
Hc12 Microcontrollers
Manufacturer
Freescale Semiconductor, Inc
Datasheet
1.MC68HC912D60C.pdf
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Technical Data
403
TAGHI signal shares a pin with the BKGD signal. Tagging information is
latched on the falling edge of ECLK.
Table 19-12
operate independently - the state of one pin does not affect the function
of the other. The presence of logic level zero on either pin at the fall of
ECLK performs the indicated function. Tagging is allowed in all modes.
Tagging is disabled when BDM becomes active and BDM serial
commands are not processed while tagging is active.
The tag follows program information as it advances through the queue.
When a tagged instruction reaches the head of the queue, the CPU
enters active background debugging mode rather than execute the
instruction.
shows the functions of the two tagging pins. The pins
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TAGHI
Table 19-12. Tag Pin Function
1
1
0
0
TAGLO
1
0
1
0
both bytes
high byte
low byte
no tag
Tag
MC68HC912D60A — Rev. 3.1
Freescale Semiconductor
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