MC68HC12 Datasheet, PDF (420/478 Pages) Motorola, Inc – The MC68HC912DT128A microcontroller unit (MCU) is a 16-bit device composed of standard on-chip peripherals including a 16-bit central processing unit

Development Support
Table 20-10. Tag Pin Function
TAGHI
1
1
0
0
TAGLO
1
0
1
0
Tag
no tag
low byte
high byte
both bytes
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.
Technical Data
420
Development Support
MC68HC912DT128A — Rev 4.0
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