January 2015

DocID025710 Rev 2

1/14

AN4429

Application note

RPC56xx and SPC56xx C90FL Flash recovery in case of brownout

during Flash erase operation

Introduction

The RPC56xx and SPC56xx families of devices have internal Flash used for code and data.

The following RPC56xx and SPC56xx devices use C90FL technology they are for internal

Flash:

• RPC56ELxx

• RPC564Axx

• SPC56xLxx

• SPC564Axx

If, on C90FL Flash, there is an accidental power loss or supply voltage drop or unexpected

reset (in general called brownout) that happens during a Flash erase operation, the Flash

blocks erased are left a not deterministic state.

This application note describes how to recover the C90FL Flash block(s) interrupted during

an erase operation in case of such brownouts.

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