AN2497 Freescale Semiconductor / Motorola, AN2497 Datasheet - Page 4

• Manufacturer Part Number: AN2497
• Description: HCS08 Background Debug Mode versus HC08 Monitor Mode
• Manufacturer: Freescale Semiconductor / Motorola

AN2497/D
Background Debug Mode Interface
4
Stop and Wait Modes
Table 1. Differences Between HC08 Monitor Mode and HCS08 Background Debug Mode
Timer Counter
Standard Tool
Commands
Breakpoint
Connector
Function
HCS08 Background Debug Mode versus HC08 Monitor Mode
The following sections introduce the new HCS08 background debug mode and
provide more details about the background debug controller.
Motorola has defined a standard 6-pin connector that allows an interface pod
to be connected to any target HCS08 Family MCU. This connector definition is
also used in the HC12 and HCS12 Family MCUs and was derived from the
10-pin interface found on Motorola's high performance 16-bit and 32-bit MCUs.
The 6-pin interface has connections for the BKGD pin, RESET, V
ground (GND). The BKGD pin does not require an external pullup resistor since
it has an on-chip pullup. The connector includes an optional reset signal so that
a development system can remotely force a target system reset. A V
connection is optional and allows the BDM interface pod to obtain power from
the target system.
Freescale Semiconductor, Inc.
Total 5 commands
* User program can be executed from
* CPU registers can be accessed
* Memory can be accessed in monitor
One breakpoint function supported by
Active in monitor mode
Monitor mode not available in stop or
16-pin MON08 connector
For More Information On This Product,
the monitor (RUN)
indirectly
mode but not while user program is
running
break module
wait mode
HC08 Monitor Mode
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(Continued)
Total 30 commands:
* User program can be executed from
* Active background commands can
* Non-intrusive commands can
One hardware breakpoint and one
Two additional complex breakpoints
Inactive in active background mode
Background access available in stop3
6-pin BDM connector
17 active background mode
13 non-intrusive commands
HCS08 Background Debug Mode
commands
the active background mode
access CPU registers directly
access memory not only in active
background mode but also while
user program is running
user instruction trace supported by
BDC
supported by DBG module
or wait mode if BDM enabled
(ENBDM = 1)
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MOTOROLA
, and
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