Freescale Semiconductor Microcontrollers Uživatelský manuál stáhnout pdf (Strana 363)

ICS MON08 Interface Connection

Device Class Description

Microcontrollers Debugger Manual

Figure 13.14 Reset Connection

In this configuration, because the software does not directly control power to the

processor, the user is prompted to turn the processor's power supply on and off. Turning

off the power supply is necessary to pass the initial security mode check and access the

Flash on the processor. A simple reset is not enough; to pass the security check, you must

first force the processor to encounter a POR (power-on reset) which requires the

processor's voltage to dip below 0.1v. Once security is passed, resetting the device is

facilitated by the above circuitry.

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Freescale Semiconductor Microcontrollers Uživatelský manuál Strana 363