MC68HC912D60A MOTOROLA [Motorola, Inc], MC68HC912D60A Datasheet - Page 377
MC68HC912D60A
Manufacturer Part Number
MC68HC912D60A
Description
Microcontrollers
Manufacturer
MOTOROLA [Motorola, Inc]
Datasheet
1.MC68HC912D60A.pdf
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Technical Data — MC68HC912D60A
19.1 Contents
19.2 Introduction
19.3 Instruction Queue
MC68HC912D60A — Rev 3.0
MOTOROLA
19.2
19.3
19.4
19.5
19.6
Development support involves complex interactions between
MC68HC912D60A resources and external development systems. The
following section concerns instruction queue and queue tracking signals,
background debug mode, and instruction tagging.
The CPU12 instruction queue provides at least three bytes of program
information to the CPU when instruction execution begins. The CPU12
always completely finishes executing an instruction before beginning to
execute the next instruction. Status signals IPIPE[1:0] provide
information about data movement in the queue and indicate when the
CPU begins to execute instructions. This makes it possible to monitor
CPU activity on a cycle-by-cycle basis for debugging. Information
available on the IPIPE[1:0] pins is time multiplexed. External circuitry
can latch data movement information on rising edges of the ECLK
signal; execution start information can be latched on falling edges.
19-1
Freescale Semiconductor, Inc.
For More Information On This Product,
shows the meaning of data on the pins.
1
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 377
Instruction Queue . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .377
Background Debug Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . .379
Breakpoints. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 395
Instruction Tagging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 402
Go to: www.freescale.com
Development Support
Section 19. Development Support
Technical Data
Table
377
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