ST HDS2 Series, Руководство пользователя

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ST7MDTU3-EMU2B Emulator User Manual 4 - Emulator Features
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4.7.1 Fosc
The emulator can work with three Fosc values that are generated by the emulator
clock source (max. frequency = 24 MHz, min. frequency = 6 MHz):
• 24 MHz .
• 12 MHz .
• 6 MHz .
Note:
Refer to Emulation Functional Limitations and Discrepancies on page 51 for information on
the application clock available on your emulator.
4.7.2 WATCHDOG
This option allows you to choose whether the watchdog timer is enabled by
software or by hardware.
When the Software option is chosen, the watchdog has to be enabled by software.
When the Hardware option is chosen, the watchdog is always enabled.
Refer to the datasheet for your ST7 MCU for more information on the watchdog
timer.
4.7.3 WGD+HALT
This option allows you to determine if a reset is generated when entering HALT
mode while the watchdog is active. There are two options: Reset, where a reset is
generated when entering Halt mode if the watchdog is active, and No Reset,
where no reset is generated when entering Halt mode.
4.7.4 Oscillator Selection
This option determines the clock divider used to drive the USB interface at 6 MHz.
There are two options: 24 MHz, where a 24 MHz oscillator is used, and 12 MHz,
where a 12 MHz oscillator is used.
4.8 Emulation Functional Limitations and Discrepancies
4.8.1 Power Supply
The application supply follower allows this emulator to run with an application V
DD
ranging between 4.0 V to 5.5 V. If the application isn't powered, or the V
DD
< 4.0 V,
the power supply is maintained at 4.0 V. If your application is powered by a voltage
greater than 5.5 V, the emulator will limit this value internally to 5.5 V.