UM0139 datasheet(21/38 Pages) STMICROELECTRONICS

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UM0139

Emulation Characteristics

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Watchdog

This option allows you to choose whether the watchdog timer is enabled by software or by

hardware.

Refer to the datasheet of your target ST7 MCU for more information on the watchdog timer.

Watchdog halt

There are two options: Reset or No Reset. If this option is set to Reset, when the Watchdog

is enabled and a Halt instruction is encountered in the executable code, a chip reset will be

performed. If this option is set to No Reset, no chip reset will be performed.

EXT_IT

This option bit allows the Port C external interrupt mapping to be configured as ei0 or ei1.

3.2

Hardware simulation

The ST7MDT10-EMU3 emulator has a hardware simulation function that allows you to

simulate the reaction of the target MCU under certain circumstances. This feature can only

be accessed when your emulator is not running.

To access the hardware simulation function, select Debug Instrument > Hardware

Simulation from STVD7’s main menu bar.

Note:

The list of Simulation commands may vary according to the selected microcontroller.

Figure 15.

Hardware simulation window

Table 4.

EXT_IT option bit mapping

ei0

ei1

EXT_IT bit value

PA[7:0] Ports

PB[7:0] Ports

PC[5:0] Ports

PA[7:0] Ports

PC[5:0] Ports

PB[7:0] Ports

UM0139 Datasheet(PDF) 21 Page - STMicroelectronics