In-System FLASH Programming with hardwareimplemented bank switching capabilityThe following information concerns all microcontrollers of the C5xx / SAB 80C5xx familywhich use an internal ROM mask in combination with an external code FLASH memory.The external FLASH memory can be used as reprogrammable code memory for theapplication software. This application focuses on SIEMENS 8-bit microcontrollerderivatives with internal code memory (ROM) sizes of 8/16 Kbyte in maximum becauseof the overlapped code memory area of the FLASH memory of 8/16 Kbyte cannot beused:· C501-1R· C502-2R· C504-2R· C511(A)-R· C513(A)-R/-2R· C515-1R· SAB 80C535· SAB 80C537This application note describes the proceeding for the in-system reprogramming ofapplication software by using special application hardware for memory bank switching andsoftware programming service routines in the internal mask programmable ROM forexternal FLASH memories (5V-only).
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