schaltungsanordnung and procedures for speicherplatzverwaltung and processing of non in kleinsteuerungen

摘要

The circuit configuration for storage management and for the execution of user programs in small control units using a microcontroller (2). A microcontroller (2) has a central processing unit, a volatile memory, a non-volatile memory and an interface. An additional non-volatile readable and writeable memory unit is configured as a serial memory unit and is,connected to the microcontroller as a separate unit via the interface. Different methods are described, for executing user programs using the circuit configuration. In a first method, the entire user program is read out from the separate memory and is serially interpreted by the microcontroller. In a second method, the entire user program is copied into and afterward directly interpreted by an internal memory of the microcontroller during the runup phase of the flow of control.