Target has reset button checkbox, Mon08 cable connection communications type, Power up and power down radio buttons – Freescale Semiconductor Microcontrollers User Manual

Page 369

Advertising
background image

HC08 P&E Multilink/Cyclone Pro Connection

Connection Procedure

369

Microcontrollers Debugger Manual

Target Has RESET Button Checkbox

With Class III boards, the software occasionally needs to get control of the target. On
systems which are Class III boards with the monitor mode circuitry built-in (including RS-
232 driver), there is no means to reset the target to gain control. If the board has a reset
button, the software can use this to gain control of the target system. If this option is
checked, the software prompts the user to push the target reset button when a reset of the
target system is desired. If the option is unchecked, the software prompts the user to power
cycle the target system to achieve a reset.

MON08 Cable Connection Communications Type

This selection box is valid only for Class II hardware configurations using the MON08
cable. It allows the user to specify the sequence that the software uses to power up the ICS
system. When the software tries to create a power-on reset condition, two events must
occur:

1. Power of the target MCU must go below 0.1v. This means that the processor cannot be

receiving power from its power pins, nor can it have a significant voltage being driven
on port pins or the IRQ line, as these drive the MCU power back through these pins. It
is crucial, therefore, to have the ICS and the Target both powered down at some point
in time.

2. The processor MON08 configuration pins, including IRQ, must be properly driven

when the target processor resets to drive it into monitor mode. If these pins are not set
up properly before the processor powers up, the processor may start up in user mode.

Power Up and Power Down Radio Buttons

Power Down ICS button prompts the user to power down the board. Power Up ICS
prompts the user to power up the board.

This is the default option and works for most, if not all, ICS08/Target Board solutions.

1. Software automatically powers down the ICS.

2. Software asks the user to power down the board as follows:

Figure 14.8 Power Down Dialog Box

Advertising