AN2168

5 Boot management

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Figure 7.

ST10F27x Standard bootstrap via CAN

5.2

Single chip mode

If the bootstrap mode isn’t activated (P0L.4 =1 & P0L.5=1) and EA = 1 during reset, the single

ship mode is enabled. In this mode, the reset vector is located in the internal memory. In this

case, the internal flash must contain a valid program at address 00’0000.

5.3

Boot from external memories

If the bootstrap mode isn’t activated (P0L.4 =1 & P0L.5=1) and EA = 0, the ST10F27x will start

fetching code from the external memory at address 00’0000. In this mode, the internal flash can

not be accessed.

P0L.4 = 0

P0L.5 = 0

VDD

8 KOhms

P4.5 : CAN1_Rx

VDD

External device

VSS